Skip to main content

Abstract

Reviewing 48 instead of 12 months of patients’ care history reduced estimated rates of new schizophrenia spectrum disorder diagnoses, because historical diagnoses were detected for >40% of patients. Among participants with 48 months of historical data, 63% had a care history involving multiple payers.

Abstract

Objective:

The authors used a large clinical data set to determine which index diagnoses of schizophrenia spectrum disorder were new diagnoses.

Methods:

Using the Massachusetts All-Payer Claims Database (2012–2016), the authors identified patients with a schizophrenia spectrum disorder diagnosis in 2016 (index diagnosis) and then reviewed patients’ care histories for the previous 12, 24, 36, and 48 months to identify previous diagnoses. Logistic regression was used to examine patient characteristics associated with the index diagnosis being a new diagnosis.

Results:

Overall, 7,217 individuals ages 15–35 years had a 2016 diagnosis of schizophrenia spectrum disorder; 67.7% had at least 48 months of historical data. Among those with at least 48 months of care history, 23% had no previous diagnoses. Diagnoses from inpatient psychiatric admissions or among female or younger patients were more likely to represent new diagnoses, compared with diagnoses from most other diagnosis locations or among males or older age groups, and outpatient diagnoses were less likely to represent new diagnoses than were most other diagnosis settings. Reviewing 48 instead of 12 months of data reduced estimated rates of new diagnoses from 112 to 66 per 100,000 persons; historical diagnoses were detected for 61% and 77% of patients with 12 or 48 months of care history, respectively.

Conclusions:

Examining multiple years of patient history spanning all payers and providers is critical to identifying new schizophrenia spectrum disorder diagnoses in large data sets. Review of 48 months of care history resulted in lower rates of new schizophrenia spectrum disorder diagnoses than previously reported.

HIGHLIGHTS

Early treatment improves long-term outcomes for patients with schizophrenia spectrum disorder, but limited information is available on the numbers of patients with a new diagnosis of schizophrenia spectrum disorder or their treatment in the United States.
This study used data in the Massachusetts All-Payer Claims Database, which integrates information across payers, to determine new schizophrenia spectrum disorder diagnoses with varying amounts of historical data.
Review of additional patient history data revealed that many patients who might have appeared to have new schizophrenia spectrum disorder instead have had previous diagnoses, indicating the potential for misclassification in a limited historical review.
Each year across the United States, approximately 100,000 adolescents or young adults experience first-episode psychosis (13). Early intervention improves longer-term outcomes for this debilitating condition, and specialized treatment clinics are increasing in number (411). However, information on the number of patients who develop a schizophrenia spectrum disorder and the extent to which they receive early treatment remains limited. Furthermore, it can be difficult to accurately measure both the number and proportion of cases within a population. For example, survey samples or data relying on patient self-reports may be affected by response bias, particularly for conditions that impair cognition and insight. Similarly, data from hospitals or clinics reflect only individuals who present for treatment at those sites.
Large population-based data sets are needed to examine disease incidence. Most large data sets rely on insurance claims data from a limited number of payers. Moreover, the United States does not have a unique national patient identifier that is standardized across payers and data sources, hindering efforts to construct a longitudinal patient history. Thus, the payment fragmentation in the United States, the absence of standard identifiers, and patients’ movement across different payers make it difficult to identify the first diagnosed episode of a disease for an individual in a single payer’s data set (10, 1216).
Previous surveys suggest that psychosis often first occurs between ages 15 and 35 years, with a slightly higher number of cases among males (15, 17, 18). This timing of psychosis onset coincides with the transition from adolescence to adulthood and with changes in insurance coverage for many individuals. For example, Medicaid eligibility for children ends at age 19 in most states (21 in Massachusetts) (19), and group commercial insurance plans limit coverage for dependent children to those ages <26 years, such that many individuals leave their family plan on turning 26. Moreover, the onset of first-episode psychosis itself could alter insurance coverage, for example, when employment changes affect employer-sponsored insurance coverage or when individuals become eligible for Medicaid because of decreased income.
One common approach in the literature for identifying individuals with initial diagnoses of psychosis is to examine the 12 months before a diagnosis within the available data (14, 20). Other studies have not used historical review or have not specified the period of review and, unsurprisingly, have had variable incidence estimates (15). To date, no assessments have explored the adequacy of reviewing 12 months of medical history or the implications of doing so.
This study used the Massachusetts All-Payer Claims Database (APCD) to identify individuals with new diagnoses of schizophrenia spectrum disorder within insurance claims after reviewing each patient’s history. The Massachusetts APCD contains standardized patient identifiers that permit an individual-level, longitudinal historical review. This study examined the number of health insurance payers in each patient’s history and the implications of reviewing 12, 24, 36, or 48 months of medical history for capturing previous diagnoses and estimating population-level rates of new diagnoses.

Methods

Framework

Previous studies have examined the incidence of schizophrenia spectrum disorder by using a range of diagnosis codes or treatments and months of historical data (1214, 21). When attempting to identify the initial diagnosis, it is necessary to define an index diagnosis and the period preceding it (i.e., the patient’s history). The extent of patient history reviewed must be feasible; evaluating each patient’s complete life history is impractical at a population level. Most data sets include data from limited periods or from a single payer or are unable to track individuals across payers; thus, many studies review only the 12 months preceding an index event.
For schizophrenia spectrum disorder specifically, 12 months of history may not be sufficient, particularly given concerns about variable access to care. Assessing the adequacy of a patient’s history requires that patients have available data from the period of interest and involves a review for historical diagnoses. The ability to track patients throughout these preceding months is important because adolescents and young adults frequently change payers as they age out of some forms of insurance or gain or lose employer-sponsored insurance.

Study Data

This study used the Massachusetts APCD, release 6.0, which contains medical claims for commercially and publicly insured individuals and provides longitudinal information on diagnoses and treatments (22). In 2016, 97% of individuals in Massachusetts had health insurance coverage, among the highest rates in the United States (23); thus, the APCD captures most of the Massachusetts population until individuals’ death or departure from the state.
The data set includes group commercial, individual commercial, Medicare Advantage, and Medicaid data but does not include fee-for-service Medicare data. Eligibility for Medicare, however, is limited to those ages ≥65 years or those <65 who have qualified through disability; the latter group has a 2-year waiting period after becoming eligible for Social Security Disability Insurance benefits. The APCD does not include data from workers’ compensation, TRICARE and the Veterans Health Administration, or the Federal Employees Health Benefit Plan (22). Self-funded employer plans also were not required to submit data to the Massachusetts APCD starting in 2016, resulting in a decrease to 84.5% of the proportion of Massachusetts residents with available data in the APCD in 2016 (24). The Mass General Brigham Institutional Review Board approved this study and did not require individual patient consent.

Diagnoses for Psychosis

We identified all individuals with a diagnosis of schizophrenia spectrum disorder on the basis of ICD-9 and ICD-10 diagnosis codes. The study used information from inpatient, emergency department, observational, and outpatient claims. We categorized individuals as having a diagnosis of schizophrenia spectrum disorder by using definitions from the literature (see the online supplement to this article) (14, 16). We also restricted the sample to individuals ages 15–35 years on the basis of previous literature about age at onset and divided the cohort into those with early onset (ages 15–17), typical onset (ages 18–29), or late onset (ages 30–35).

Analysis

We identified the earliest diagnosis of schizophrenia spectrum disorder for each patient in the 2016 observation window (i.e., the index diagnosis), yielding up to 4 years of historical data before the index diagnosis, because the version of APCD we used contained 5 years of data (2012–2016). We examined total months of APCD enrollment across all payers, gaps in enrollment, and number of payers during the 4 years before the index diagnosis. We also examined the percentage of patients who were continuously present in the APCD (i.e., had complete data capture in the 12-, 24-, 36-, and 48-month periods before their index diagnosis). We used logistic regression to assess the probability of having historical data as a function of individual (e.g., sex, age, and insurance type) and diagnostic (e.g., site of diagnosis) characteristics.
We then examined the cumulative percentage of individuals with additional schizophrenia diagnoses in their history (i.e., during the preceding 12, 24, 36, and 48 months). We repeated the analyses for each age and sex combination. In the analyses, we categorized an individual as having a new 2016 diagnosis if they had no historical diagnoses of schizophrenia spectrum disorder and had adequate information to make this determination (i.e., 48 months of history).
Logistic regression models were used to examine the association between individual characteristics and having a new diagnosis of schizophrenia spectrum disorder among those with 48 months of history. All analyses were stratified by age and sex because of a priori hypotheses about incidence differences.

Sensitivity Analyses

We used several sensitivity analyses to complement the main analyses by using varying information sources, diagnosis codes, or other study parameters and accounting for previous treatments. First, we identified additional historical schizophrenia diagnoses from claims obtained from other clinical settings, such as postacute care or laboratory claims. The main analyses did not include these data sources because of a priori concerns about insufficient information quality. The sensitivity analysis added historical diagnoses of schizophrenia spectrum disorder from the expanded types of claims.
Next, we repeated the analyses, including additional diagnostic codes for other and unspecified psychosis (see online supplement), because for some individuals, these codes may appear before a diagnosis of schizophrenia spectrum disorder. Then, we used information about historical receipt of antipsychotic medications, in addition to historical diagnoses, to classify patients as having care potentially consistent with a schizophrenia spectrum disorder diagnosis. Other sensitivity analyses restricted the review of historical data to the information obtained only from a single payer or allowed for having fewer continuous months of data.

Results

Population With Schizophrenia Spectrum Disorder in the Massachusetts APCD

We identified 7,217 individuals ages 15–35 years with an index 2016 diagnosis of schizophrenia spectrum disorder (420 per 100,000 residents ages 15–35 in the Massachusetts APCD) (Table 1) (25). Among these individuals, 67.7% (N=4,885) had at least 48 continuous months of historical data. In addition, 14.6% (N=1,052) had a single gap in insurance coverage (mean=37.1 months of enrollment per person over the preceding 48 months), and the remaining 17.7% (N=1,280) had either more than one gap or <48 months of historical data (see the online supplement).
TABLE 1. Characteristics of patients with an index schizophrenia spectrum disorder diagnosis in 2016, with or without a historical diagnosis of the disease in the preceding 48 months
 2016 index diagnosis (N=7,217)48 months of historical data (N=4,885)Historical diagnosis (N=3,749)No historical diagnosis (N=1,136)
CharacteristicN%N%N%N%
Ages 15–17 years        
 Female901.2671301373
 Male1011.4772311464
Ages 18–29 years        
 Female1,16116.1798165591523921
 Male3,11043.12,037421,5464149143
Ages 30–35 years        
 Female85811.9611134741313712
 Male1,89726.31,295271,1093018616
Index diagnosis setting        
 Emergency department or observational1,64222.81,038216811835731
 Inpatient, psychiatric3494.819541093868
 Inpatient, nonpsychiatric4115.72686160410810
 Outpatient, mental health2,99741.52,086431,7384634831
 Outpatient, primary care99213.7669145301413912
 Outpatient, other82611.46291353114989
Index diagnosis health insurancea        
 Medicaid5,75979.83,948813,1288382072
 Commercial97613.5674144371223721
 Other4826.726351845797
No. of health insurance payers (index and previous 48 months)a        
 Missing38.5      
 12,33832.41,792371,4083838434
 22,06928.71,433291,0962933730
 31,52521.11,002217562024622
 >31,24717.3658144891316915
Residence in a low-SES zip code at index diagnosisb1,48820.6988207442024422
Index diagnosis        
 Schizophrenia3,62250.22,410491,7994861154
 Schizoaffective disorder3,46248.02,403491,8885051545
 Both1331.8722622101
a
Insurance payers included individual health insurance companies, fee-for-service Medicaid, or Health Safety Net. If a health insurance company operated in multiple insurance types (such as commercial, Medicaid managed care, or other, including Medicare Advantage), each insurance type of this health insurance company was counted as a different payer. Other insurance types at the time of the index diagnosis included Medicare Advantage, indemnity insurance, mixed, unspecified, and missing.
b
Data include 2.2%–3.3% of patients who had conflicting or missing data on zip code socioeconomic status (SES). Low-SES zip codes were defined as those with >20% of households below poverty or >25% of residents ages ≥25 years with less than a high school education. Source: Integrated Public Use Microdata Series–National Historical Geographic Information System (25).
Among those with at least 48 continuous months of information before their index schizophrenia spectrum disorder diagnosis (i.e., adequate historical data), 3,749 (77%) had at least one similar historical diagnosis, and 1,136 (23%) did not (i.e., had new diagnoses in 2016). Multivariate regression models revealed that index diagnoses from inpatient psychiatric admissions or among female patients or those ages 15–17 were more likely to represent new diagnoses of schizophrenia spectrum disorder, compared with index diagnoses from most other diagnosis locations or among males or older age groups, and outpatient diagnoses were less likely to represent new diagnoses than were most other diagnosis locations (Table 2).
TABLE 2. Likelihood of having a diagnosis of schizophrenia spectrum disorder before the index diagnosis of the disease, by patient characteristica
CharacteristicOR95% CI
Female (reference: male).71b.61–.82
Age (reference: ages 18–29 years)  
 15–17.28b.19–.39
 30–351.43b1.23–1.67
Index diagnosis setting (reference: ED or observational)  
 Inpatient, psychiatric.67b.49–.93
 Inpatient, nonpsychiatric.82.61–1.08
 Outpatient, mental health2.79b2.32–3.34
 Outpatient, primary care2.02b1.60–2.56
 Outpatient, other2.90b2.24–3.75
Index diagnosis insurance (reference: Medicaid)  
 Commercial.46b.38–.55
 Other.72b.54–.97
Residence in a low-SES zip code at index diagnosis.86.73–1.03
Index diagnosis (reference: schizophrenia)  
 Schizoaffective disorder1.18b1.02–1.36
 Schizophrenia and schizoaffective disorder2.97b1.46–6.02
a
Odds ratios are from a logistic model that included only patients with an index schizophrenia spectrum disorder diagnosis in 2016 and 48 months of continuous enrollment data preceding the index diagnosis (N=4,885). ED, emergency department; SES, socioeconomic status.
b
Two-tailed z test, p<0.05.

Payment Fragmentation

Table 3 displays the proportion of the 4,885 individuals with at least 48 months of historical data whose data came from multiple payers. Of these patients, 64% (N=3,093) had at least two payers during the 48-month period (Table 3). As expected, patients’ number of payers changed with age: for example, 65% of females ages 15–17 years and 72% of females ages 18–29 years had multiple payers during the 48 months before their index diagnosis (Table 3).
TABLE 3. Proportion of patients with one or more health insurance payers during the index diagnosis month and the 48 months before the index diagnosis of schizophrenia spectrum disorder, by age and sexa
 Ages 15–17 yearsAges 18–29 yearsAges 30–35 years
 Female (N=67)Male (N=77)Female (N=798)Male (N=2,037)Female (N=611)Male (N=1,295)All (N=4,885)
N of health insurance payersN%N%N%N%N%N%N%
123342026229296523223839630491,79237
227402938239306213017829339261,43329
315221722204264412211519210161,00221
>323111412616323168013116965814
a
Number of payers includes those in the period spanning the index diagnosis month and the 48 months preceding the diagnosis. Data include only patients with an index diagnosis of schizophrenia spectrum disorder in 2016 and 48 months of continuous enrollment data preceding the index diagnosis (N=4,885). Insurance types include Medicaid, commercial, and other (e.g., Medicare Advantage, mixed, unspecified, or missing). Insurance payers include individual health insurance companies, fee-for-service Medicaid, or Health Safety Net. If a health insurance company operated in multiple insurance types (such as commercial, Medicaid managed care, or other, including Medicare Advantage), each insurance type of this health insurance company was counted as a different payer.

Historical Diagnoses

Figure 1 displays the percentage of patients who had diagnoses of schizophrenia spectrum disorder before their index diagnosis, as detected in each patient’s historical 12, 24, 36, or 48 months of data. Among all patients with at least 48 months of historical data (N=4,885), 61% (N=2,958) had a historical diagnosis in the 12 months before their index diagnosis; expanding the review to the previous 24, 36, and 48 months increased the percentage of patients with a historical diagnosis to 71% (N=3,446), 75% (N=3,641), and 77% (N=3,749), respectively (see the online supplement). Patients at younger ages at their index diagnosis were less likely to have historical diagnoses, compared with older patients (Figure 1). When the historical review was expanded to 36 or 48 months from 24 months, the incremental increase in percentage of patients ages 15–17 years (at index diagnosis) with a historical diagnosis was only modest (e.g., a 2.6 percentage-point difference among males) (see the online supplement).
FIGURE 1. Percentage of patients with a diagnosis of schizophrenia spectrum disorder before the index diagnosis of the disease, by age and sex

Rates of New Diagnoses

After we reviewed 48 months of medical history for each patient with available data (N=4,885), the rate of new diagnoses of schizophrenia spectrum disorder was 66 per 100,000 individuals ages 15–35 years in the Massachusetts APCD, ranging from 37 per 100,000 for females ages 15–17 to 100 per 100,000 for males ages 18–29 (see the online supplement). Reviewing less extensive historical data would have erroneously inflated the rates of new diagnoses (e.g., up to 112 per 100,000 individuals if examining only 12 months of history). More than 40% (N=791) of patients who appeared to have new diagnoses in 2016 after we examined only 12 months of medical history (N=1,927) in fact had additional diagnoses of schizophrenia spectrum disorder that we detected after reviewing 48 months of history.
Sensitivity analyses yielded comparable findings (see the online supplement). Notably, restricting the analysis to individuals with insurance coverage under a single payer and with sufficient data before their index event resulted in lower estimated rates of new diagnosis (i.e., 22 per 100,000 individuals). Expanding the diagnosis codes of schizophrenia spectrum disorder resulted in additional patients (N=9,670) identified as having a 2016 diagnosis of schizophrenia spectrum disorder; however, this sample had a proportion of patients with adequate historical data and with historical diagnoses that was similar to the proportion in the sample derived from using the more restrictive diagnosis codes. Many patients received antipsychotic medications before their index diagnosis; thus, removing data from patients with historical medication use but no historical diagnosis of schizophrenia spectrum disorder decreased the estimated rates of new diagnosis, but we note that some antipsychotic prescriptions could have been for other indications.

Discussion

Identifying individuals with new diagnoses of schizophrenia spectrum disorder is critical for understanding the burden of this disease in the United States and for determining whether new policies and delivery options are adequate to meet the needs of this population. This study offered the first examination of approaches for defining new diagnoses of schizophrenia spectrum disorder by using comprehensive information about historical care received for a well-defined population. Review of up to 4 years of patient history may be necessary to prevent misclassification; for younger patients (i.e., ages 15–17 years), a 2-year history may be sufficient because schizophrenia starts in adolescence. Failure to consider patients’ histories or limiting the review to medical history based on data from a single payer may result in the misclassification of many patients.
Estimated incidence rates of new diagnoses of schizophrenia spectrum disorder in previous studies have been as high as 86 per 100,000 individuals, depending on age; however, these estimates are based on review of ≤1 year of patient history, if any history was reviewed (14, 15, 26). In this study, we found a lower overall rate of new diagnoses when we considered several years of patient history because review of this extended historical period enabled us to detect additional diagnoses before the index diagnosis (i.e., 66 per 100,000 individuals, ranging from 37 per 100,000 for females ages 15–17 to 100 per 100,000 for males ages 18–29). Estimates based on self-reported diagnoses and survey methods can be challenging, given the impact of schizophrenia spectrum disorder on patients’ insight and cognition (27).
These findings have several implications. Population-wide rates of new diagnoses of schizophrenia spectrum disorder are likely lower than suggested in the literature, with larger errors for rates among older individuals, because many patients have earlier diagnoses. The greater number of years of patient history we reviewed and the ability to track data across payers were both critical to detecting historical diagnoses. Indeed, this study’s estimates when restricting the historical review to 1 year were comparable to those from previous studies, but total cases and incidence rates decreased when we reviewed additional years of history. Although rates of new diagnoses may be lower after reducing misclassification of diagnoses as new ones, many people still develop this serious chronic disease; our refined estimates should not be misinterpreted as an indication that the burden of this disease is any less significant.
Although review of additional psychiatric history has the benefit of reducing misclassification, this approach reduces the amount of data available for observation of outcomes after a diagnosis and decreases the fraction of the population for whom such observation is possible when using a real-world data set. Use of a 5-year period, such as in this study, requiring 4 years of history to reliably identify a first incident of schizophrenia spectrum disorder diagnosis would leave at most only 1 year for postdiagnosis observation. Similarly, because of high patient turnover in large data sets, requiring longer periods of continuous enrollment decreases the population size meeting the criterion of 4 years of available history. Data sets always have inherent limitations and might not be appropriate for all research questions; in particular, data sets with only a few consecutive years of information would not be appropriate for examining new disease among older patients with schizophrenia spectrum disorder.
For clinicians, a better understanding of the true rates of new diagnoses may increase the likelihood that patients are connected to necessary specialized services. For policy makers, improved estimates of disease rates can help guide decisions about what types of services should be delivered, particularly with respect to investments in coordinated specialty care (CSC) clinics. For example, the 1,136 patients who had a new 2016 schizophrenia diagnosis exceeded the total capacity of all CSC clinics in Massachusetts for both new and existing patients.
This study had several limitations. First, no gold standard exists for identifying schizophrenia spectrum disorder diagnoses in administrative data. Our analyses used multiple definitions of the disease but may have missed individuals whose clinicians tended to start with unspecified psychosis diagnoses, even when they suspected that the patient has a schizophrenia spectrum disorder. However, including unspecified psychosis in the case definition yielded similar findings. Furthermore, there may be an even broader range of codes (e.g., including affective psychosis) that this approach also did not capture.
Greater diagnostic uncertainty may have been a factor early in the disease course (e.g., some patients may have been initially diagnosed as having major depressive disorder with psychotic features but were later diagnosed as having schizoaffective disorder). Coding may have varied across areas or among clinicians and longitudinally among patients. Moreover, clinical heterogeneity that is not captured through diagnosis codes was likely. We note that current approaches that use large data sets do not address the level of diagnostic certainty across different clinical and diagnostic settings and symptoms or differential standards for clinical certainty before clinicians make a diagnosis.
Finally, this study was conducted in a single state, and the results might not generalize to other states or individuals without insurance. Indeed, loss of insurance could either be a risk factor or reflect part of the disease course.

Conclusions

In summary, careful examination of multiple years of patients’ medical history is essential for identifying the true incidence of new diagnoses of schizophrenia spectrum disorder. Such diagnostic accuracy is critical to estimating population rates of new disease onset and understanding the early course of the disease. To prevent erroneous estimates and ensure that a clinical review encompasses the longitudinal history of each patient, the review should use data spanning all payers.

Supplementary Material

File (appi.ps.202100696.ds001.pdf)

References

1.
Fact Sheet: First Episode Psychosis. Bethesda, MD, National Institute of Mental Health, 2015
2.
Bebbington P, Ramana R: The epidemiology of bipolar affective disorder. Soc Psychiatry Psychiatr Epidemiol 1995; 30:279–292
3.
Waraich P, Goldner EM, Somers JM, et al: Prevalence and incidence studies of mood disorders: a systematic review of the literature. Can J Psychiatry 2004; 49:124–138
4.
Bertelsen M, Jeppesen P, Petersen L, et al: Five-year follow-up of a randomized multicenter trial of intensive early intervention vs standard treatment for patients with a first episode of psychotic illness: the OPUS trial. Arch Gen Psychiatry 2008; 65:762–771
5.
Petersen L, Nordentoft M, Jeppesen P, et al: Improving 1-year outcome in first-episode psychosis: OPUS trial. Br J Psychiatry 2005; 48:s98–s103
6.
Kane JM, Robinson DG, Schooler NR, et al: Comprehensive versus usual community care for first-episode psychosis: 2-year outcomes from the NIMH RAISE early treatment program. Am J Psychiatry 2016; 173:362–372
7.
Correll CU, Galling B, Pawar A, et al: Comparison of early intervention services vs treatment as usual for early-phase psychosis: a systematic review, meta-analysis, and meta-regression. JAMA Psychiatry 2018; 75:555–565
8.
Srihari VH, Tek C, Kucukgoncu S, et al: First-episode services for psychotic disorders in the US public sector: a pragmatic randomized controlled trial. Psychiatr Serv 2015; 66:705–712
9.
Robinson DG, Schooler NR, Rosenheck RA, et al: Predictors of hospitalization of individuals with first-episode psychosis: data from a 2-year follow-up of the RAISE-ETP. Psychiatr Serv 2019; 70:569–577
10.
Drake RJ, Husain N, Marshall M, et al: Effect of delaying treatment of first-episode psychosis on symptoms and social outcomes: a longitudinal analysis and modelling study. Lancet Psychiatry 2020; 7:602–610
11.
Johnson KA, Guyer M, Öngür D, et al: Early intervention in psychosis: building a strategic roadmap for Massachusetts. Schizophr Res 2021; 229:43–45
12.
Castro VM, Minnier J, Murphy SN, et al: Validation of electronic health record phenotyping of bipolar disorder cases and controls. Am J Psychiatry 2015; 172:363–372
13.
Anderson KK, Fuhrer R, Abrahamowicz M, et al: The incidence of first-episode schizophrenia-spectrum psychosis in adolescents and young adults in Montreal: an estimate from an administrative claims database. Can J Psychiatry 2012; 57:626–633
14.
Simon GE, Coleman KJ, Yarborough BJH, et al: First presentation with psychotic symptoms in a population-based sample. Psychiatr Serv 2017; 68:456–461
15.
Orrico-Sánchez A, López-Lacort M, Muñoz-Quiles C, et al: Epidemiology of schizophrenia and its management over 8-years period using real-world data in Spain. BMC Psychiatry 2020; 20:149
16.
Kühl JOG, Laursen TM, Thorup A, et al: The incidence of schizophrenia and schizophrenia spectrum disorders in Denmark in the period 2000–2012. A register-based study. Schizophr Res 2016; 176:533–539
17.
Immonen J, Jääskeläinen E, Korpela H, et al: Age at onset and the outcomes of schizophrenia: a systematic review and meta-analysis. Early Interv Psychiatry 2017; 11:453–460
18.
McGrath J, Saha S, Chant D, et al: Schizophrenia: a concise overview of incidence, prevalence, and mortality. Epidemiol Rev 2008; 30:67–76
19.
Eligibility for Health Care Benefits for MassHealth, the Health Safety Net, and Children’s Medical Security Plan. Chelsea, MA, MassHealth, 2022. https://www.mass.gov/service-details/eligibility-for-health-care-benefits-for-masshealth-the-health-safety-net-and-childrens-medical-security-plan. Accessed March 24, 2022
20.
Radigan M, Gu G, Frimpong EY, et al: A new method for estimating incidence of first psychotic diagnosis in a Medicaid population. Psychiatr Serv 2019; 70:665–673
21.
Kurdyak P, Lin E, Green D, et al: Validation of a population-based algorithm to detect chronic psychotic illness. Can J Psychiatry 2015; 60:362–368
22.
Overview of the Massachusetts All-Payer Claims Database. Boston, Center for Health Information and Analysis, 2016
23.
Health Insurance Coverage of the Total Population. San Francisco, Kaiser Family Foundation, 2019. https://www.kff.org/other/state-indicator/total-population/?currentTimeframe=0&sortModel=%7B%22colId%22:%22Location%22,%22sort%22:%22asc%22%7D. Accessed March 24, 2022
24.
Wyeth A, Hobbs S, Curley S: APCD User Workgroup. Boston, Center for Health Information and Analysis, 2019. https://www.chiamass.gov/assets/APCD-User-Workgroup-November-2019.pptx. Accessed March 24, 2022
25.
Manson S, Schroeder J, Van Riper D, et al: Download US Census Data Tables & Mapping Files. Minneapolis, Integrated Public Use Microdata Series–National Historical Geographic Information System, 2021. https://www.nhgis.org. Accessed March 24, 2022
26.
Cho SJ, Kim J, Kang YJ, et al: Annual prevalence and incidence of schizophrenia and similar psychotic disorders in the Republic of Korea: a national health insurance data-based study. Psychiatry Investig 2020; 17:61–70
27.
Charlson FJ, Ferrari AJ, Santomauro DF, et al: Global epidemiology and burden of schizophrenia: findings from the global burden of disease study 2016. Schizophr Bull 2018; 44:1195–1203

Information & Authors

Information

Published In

Go to Psychiatric Services
Go to Psychiatric Services
Psychiatric Services
Pages: 1210 - 1216
PubMed: 35440163

History

Received: 9 December 2021
Revision received: 9 February 2022
Accepted: 18 February 2022
Published online: 20 April 2022
Published in print: November 01, 2022

Keywords

  1. Diagnosis
  2. Disease classification
  3. Insurance
  4. Public policy issues
  5. Research design
  6. Schizophrenia

Authors

Details

Nicole M. Benson, M.D., M.B.I. [email protected]
Mongan Institute, Massachusetts General Hospital, Boston (Benson, Yang, Weiss, Fung, Hsu); McLean Hospital, Harvard Medical School, Belmont, Massachusetts (Benson, Moran, Öngür); Department of Medicine, Harvard Medical School, Boston (Fung, Hsu).
Zhiyou Yang, Ph.D.
Mongan Institute, Massachusetts General Hospital, Boston (Benson, Yang, Weiss, Fung, Hsu); McLean Hospital, Harvard Medical School, Belmont, Massachusetts (Benson, Moran, Öngür); Department of Medicine, Harvard Medical School, Boston (Fung, Hsu).
Max Weiss, A.B.
Mongan Institute, Massachusetts General Hospital, Boston (Benson, Yang, Weiss, Fung, Hsu); McLean Hospital, Harvard Medical School, Belmont, Massachusetts (Benson, Moran, Öngür); Department of Medicine, Harvard Medical School, Boston (Fung, Hsu).
Vicki Fung, Ph.D.
Mongan Institute, Massachusetts General Hospital, Boston (Benson, Yang, Weiss, Fung, Hsu); McLean Hospital, Harvard Medical School, Belmont, Massachusetts (Benson, Moran, Öngür); Department of Medicine, Harvard Medical School, Boston (Fung, Hsu).
Lauren V. Moran, M.D., M.P.H.
Mongan Institute, Massachusetts General Hospital, Boston (Benson, Yang, Weiss, Fung, Hsu); McLean Hospital, Harvard Medical School, Belmont, Massachusetts (Benson, Moran, Öngür); Department of Medicine, Harvard Medical School, Boston (Fung, Hsu).
Dost Öngür, M.D., Ph.D.
Mongan Institute, Massachusetts General Hospital, Boston (Benson, Yang, Weiss, Fung, Hsu); McLean Hospital, Harvard Medical School, Belmont, Massachusetts (Benson, Moran, Öngür); Department of Medicine, Harvard Medical School, Boston (Fung, Hsu).
John Hsu, M.D., M.B.A.
Mongan Institute, Massachusetts General Hospital, Boston (Benson, Yang, Weiss, Fung, Hsu); McLean Hospital, Harvard Medical School, Belmont, Massachusetts (Benson, Moran, Öngür); Department of Medicine, Harvard Medical School, Boston (Fung, Hsu).

Notes

Send correspondence to Dr. Benson ([email protected]).

Funding Information

This study was funded in part by support from the National Institutes of Health (grant P50 MH-115846 to Drs. Öngür and Hsu; R01 MD-010456 to Drs. Fung and Hsu; and R01 MH-122427 to Dr. Moran) and the Agency for Healthcare Research and Quality (grant R01 HS-024725 to Dr. Fung).Dr. Benson volunteers for the Epic Systems Behavioral Health Subspecialty Steering Board. Dr. Fung consults for Ginger. Dr. Öngür has received honoraria from Neuomora. Dr. Hsu has consulted for Cambridge Health Alliance, the University of Southern California, Columbia University, Community Servings, Delta Health Alliance, AltaMed, and the Robert Wood Johnson Foundation. The other authors report no financial relationships with commercial interests.

Metrics & Citations

Metrics

Citations

Export Citations

If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.

For more information or tips please see 'Downloading to a citation manager' in the Help menu.

Format
Citation style
Style
Copy to clipboard

View Options

View options

PDF/EPUB

View PDF/EPUB

Login options

Already a subscriber? Access your subscription through your login credentials or your institution for full access to this article.

Personal login Institutional Login Open Athens login
Purchase Options

Purchase this article to access the full text.

PPV Articles - Psychiatric Services

PPV Articles - Psychiatric Services

Not a subscriber?

Subscribe Now / Learn More

PsychiatryOnline subscription options offer access to the DSM-5-TR® library, books, journals, CME, and patient resources. This all-in-one virtual library provides psychiatrists and mental health professionals with key resources for diagnosis, treatment, research, and professional development.

Need more help? PsychiatryOnline Customer Service may be reached by emailing [email protected] or by calling 800-368-5777 (in the U.S.) or 703-907-7322 (outside the U.S.).

Media

Figures

Other

Tables

Share

Share

Share article link

Share