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Published Online: 10 June 2020

Concurrent Opioid and Benzodiazepine Utilization Patterns and Predictors Among Community-Dwelling Adults in the United States

Abstract

Objective:

Using benzodiazepines and opioids together substantially increases the risk of fatal overdose. Yet, concurrent benzodiazepine and opioid prescribing rates continue to increase amid the opioid overdose epidemic. Therefore, this study sought to identify patterns and predictors associated with self-reported concurrent benzodiazepine and opioid use among community-dwelling adults.

Methods:

This retrospective, cross-sectional study used Medical Expenditure Panel Survey data from 2011, 2013, and 2015. The study population included adults (age ≥18) who did not die during the calendar year. The dependent variable was concurrent benzodiazepine and opioid use, which was identified with Multum Lexicon therapeutic class codes. Multivariable logistic regression analysis was conducted to examine the association of various individual-level factors with concurrent benzodiazepine and opioid use.

Results:

The final study sample consisted of 44,808 individuals (unweighted), of which 680 (1.6%) (weighted frequency=7,806,636) reported concurrent benzodiazepine and opioid use. Several individual-level factors were significantly associated with reporting use of this combination. For example, individuals with anxiety were more likely to report using both benzodiazepines and opioids (odds ratio [OR]=9.61, 95% confidence interval [CI]=7.37–12.5), and those with extreme pain levels were more likely to report concurrent use (OR=5.11, 95% CI=2.98–8.78). Other predictors of reporting concurrent benzodiazepine and opioid use were depression, arthritis, region, race-ethnicity, insurance, activities disability, general and mental health status, and smoking status.

Conclusions:

Several individual-level factors were associated with reporting concurrent benzodiazepine and opioid use. Therefore, enhanced educational interventions targeting both clinicians and community-dwelling adults are warranted to minimize use of this high-risk medication combination.

HIGHLIGHTS

More than seven million community-dwelling adults in the United States reported concurrent benzodiazepine and opioid use during the study period (2011, 2013, and 2015).
Several individual-level factors were associated with an increased risk of concurrent benzodiazepine and opioid use.
Anxiety increased the risk of concurrent benzodiazepine and opiate use almost tenfold.
Opioid overdose rates have been on the rise over the past 2 decades (1), and several factors, such as concurrent benzodiazepine and opioid use, are associated with an increased risk of opioid overdose (24). In fact, more than 30% of opioid overdoses involve concurrent benzodiazepine use (5, 6). As benzodiazepine and opioid prescribing rates have increased over the past 2 decades (7, 8), so has the prevalence of fatal overdoses involving this medication combination (5, 9). This epidemic led the Centers for Disease Control and Prevention to issue new guidelines in 2016 recommending that clinicians avoid prescribing benzodiazepines and opioids together when possible to minimize the risk of fatal overdose.
A cross-sectional study by Agarwal and Landon (7) investigating patterns in outpatient benzodiazepine prescribing in the United States found that benzodiazepine and opioid coprescribing rates quadrupled from 2003 to 2015. However, this study only reported on predictors associated with benzodiazepine use, and it did not report on predictors of concurrent benzodiazepine and opioid use specifically. Of the studies that have reported individual-level predictors associated with concurrent benzodiazepine and opioid use (1012), only two have been conducted on a national level (12, 13). Both of these studies used the National Survey on Drug Use and Health and found that, between 2015 and 2016, 8% of adults reported using both prescription opioids and benzodiazepines in the past year (12, 13). Certain sociodemographic characteristics, such as age, sex, marital status, education, and employment, were found to be associated with the use of these medications (12). However, other variables that may predict concurrent benzodiazepine and opioid use, such as medical and psychiatric comorbid conditions, were not analyzed.
Because concurrent benzodiazepine and opioid use increases the risk of fatal overdose and because prescribing rates of this combination have continued to rise (7), there is a need to investigate what additional individual-level factors may be driving the use of this high-risk medication combination at the national level. The purpose of this study was to determine patterns and predictors of self-reported concurrent benzodiazepine and opioid use among community-dwelling adults in the United States by using Medical Expenditure Panel Survey (MEPS) data. The results will help elucidate where more education is needed and where alternative resources for pain management and mental health care may be lacking.

Methods

Study Design and Sample

This cross-sectional, retrospective study was conducted with pooled data from MEPS (2011, 2013, and 2015). Alternate years of data were used to reduce the chance of the same respondent being included more than once (14), and multiple years of data were analyzed to achieve an adequate sample size (15). The study sample consisted of adults (age ≥18) who did not die during the calendar year. Human subjects review was not required for this study according to the University of Arizona Institutional Review Board.

Data Source

MEPS consists of large-scale surveys of families, individuals, their medical providers, and employers in the United States (16). Data are collected on the type, frequency, and cost of health services used by Americans via two major information sources: the household component (MEPS-HC) and the insurance component (MEPS-IC) (16). Additionally, the MEPS-HC is supplemented or replaced with information obtained from physicians, pharmacies, home health care providers, and hospitals via the medical provider component (MPC). MEPS-HC collects the following information: demographic characteristics, health status, health conditions, medical service use, charges and source of payments, health insurance coverage, income, employment, access to care, and satisfaction with care. MPC collects data on dates of visits and services, use of services, charges and sources of payments, and diagnoses and procedure codes documented for medical encounters. The primary use of MPC is to serve as an imputation source to supplement or replace household reported expenditure information, and it is not designed to yield national estimates.
Medication use was identified by using the MEPS prescribed medicines files. The following information was collected for each medication in each round: whether any free samples of the medicine were received; health problems the medicine was prescribed for; the number of times the prescription medicine was obtained or purchased; the year and month in which the person first used the medicine; and a list of the names, addresses, and types of pharmacies that filled the household’s prescriptions (17). Information regarding comorbid conditions was obtained from the MEPS medical conditions files (18). For our study, we used the HC files, prescribed medicines files, and medical conditions files. All files were merged by using a unique identifier (DUPERSID). We conducted our study at the individual level (unit of analysis).

Measures

Concurrent benzodiazepine and opioid use constituted the dependent variable and was identified by Multum Lexicon therapeutic class codes. We used the third level of Multum Lexicon therapeutic class codes to identify benzodiazepines (code 69) and opioids (code 60 [narcotic analgesics] and code 191 [narcotic analgesic combinations]) (17).
Independent variables included age (18–25, 26–34, 35–49, 50–64, ≥65); gender (female, male); race-ethnicity (white, Hispanic, black, other); marital status (married, widowed, separated-divorced, never married); region (Northeast, Midwest, West, South); insurance type (private, public, uninsured); poverty status (poor [<100% of federal poverty level], near poor [100%–<125% of federal poverty level], low income [125%–<200% of federal poverty level], middle income [200%–<400% of federal poverty level], and high income [≥400% of federal poverty level]); body mass index (underweight/normal, overweight, obese); general health (fair/poor, good, excellent/very good); mental health (fair/poor, good, excellent/very good); smoking status (current smoker, other); activities of daily living (ADL) limitations (yes, no); instrumental activities of daily living (IADL) limitations (yes, no); activities disability (yes, no); pain level (quite/extreme, little/moderate, no pain); and diagnosis of arthritis, anxiety, depression, cancer, chronic obstructive pulmonary disease, diabetes, heart disease, hypertension, hyperlipidemia, osteoporosis, and thyroid disorders.
ADL limitations were defined as MEPS participants requiring help or supervision on any ADL (bathing, dressing, eating, toileting, getting in and out of bed, and mobility into own residence). IADL limitations were defined as MEPS participants requiring assistance paying bills, using the telephone, preparing light meals, doing laundry, going shopping, or taking medications. Activities disability was identified on the basis of whether MEPS participants had any limitations with work, housework, or schoolwork. General and mental health status were determined via a survey question asking MEPS participants to rate their health as excellent, very good, good, fair, or poor (19). A comprehensive list of definitions for the data variables described here can be found elsewhere (19, 20).

Statistical Analysis

Chi-square tests were used to examine the differences in individual-level characteristics between the benzodiazepine and opioid, opioid only, benzodiazepine only, and no benzodiazepine or opioid groups. Multinomial logistic regression was conducted to determine the individual-level characteristics associated with the benzodiazepine and opioid use group (reference group was no benzodiazepine or opioid) among community-dwelling adults in the United States. SAS, version 9.4 was used to conduct all analyses. Complex survey structure of MEPS was adjusted with SURVEYFREQ and SURVEYLOGISTIC procedures to obtain national-level estimates.

Results

A total of 44,808 (weighted frequency=477,679,360) individuals were included in the final study sample. Sociodemographic and clinical characteristics of the benzodiazepine and opioid, opioid only, benzodiazepine only, and no benzodiazepine or opioid groups are presented in Table 1. In total, 680 (1.6%) (weighted frequency=7,806,636) adults reported concurrent benzodiazepine and opioid use during the study period. Most MEPS participants were ages 50–64, female, white, and residing in the Southern region of the United States. Nearly half (48.1%) of the MEPS participants in the benzodiazepine and opioid group reported fair/poor general health status, whereas most participants (56.4%) in the no benzodiazepine or opioid group reported having excellent/very good general health status. Additionally, most MEPS participants (61.9%) in the benzodiazepine and opioid group reported an activities disability, which was not the case for the no benzodiazepine or opioid group (13.3%).
TABLE 1. Demographic and clinical characteristics of community-dwelling adults in the United Statesa
 Benzodiazepine and opioidbOpioid onlybBenzodiazepine onlybNo benzodiazepine or opioidb 
CharacteristicNWt%NWt%NWt%NWt%pc
Age         
 18–25142.286610.1293.63,42610.4<.001
 26–34536.01,32513.09810.14,26012.0 
 35–4916924.42,28622.720120.78,12022.4 
 50–6426139.22,82731.328132.99,85829.3 
 ≥6518328.11,95822.929732.68,29625.9 
Gender         
 Female47163.85,68057.361767.020,10957.2<.001
 Male20936.23,58242.728933.013,85142.8 
Race-ethnicity         
 White45482.94,71872.056279.016,30170.4<.001
 Black1076.52,13112.1925.36,57210.6 
 Hispanic886.91,80010.220312.07,80012.0 
 Other313.76135.7493.73,2877.0 
Marital status         
 Married29751.44,29352.043650.317,81656.8<.001
 Widowed8812.98057.910610.72,8147.9 
 Separated/divorced19223.71,91118.619621.25,15813.5 
 Never married10312.02,25321.516817.88,17221.8 
Region         
 Northeast7512.51,25214.612915.45,92419.2<.001
 Midwest16325.72,05523.820824.06,82622.3 
 South30343.33,68038.936639.812,56137.0 
 West13918.42,27522.720320.88,64921.6 
Insurance         
 Private30854.65,05064.752265.521,19572.6<.001
 Public33740.43,32427.931227.59,20220.2 
 Uninsured355.08887.3726.93,5637.2 
Poverty status         
 Poor20020.02,22116.516111.45,64510.3<.001
 Near poor/low income18826.12,20920.222020.86,93315.8 
 Middle income16025.52,46627.726730.710,04629.0 
 High income13228.42,36635.625837.211,33644.9 
BMI status         
 Underweight/normal20030.42,43329.328532.710,50334.0<.001
 Overweight19929.02,81531.332237.211,21533.7 
 Obese27540.63,87039.328230.111,55832.3 
General health status         
 Excellent/very good12019.03,41041.035243.717,06556.4<.001
 Good21032.92,95931.831035.411,15630.5 
 Fair/poor35048.12,89327.224420.95,73813.1 
Mental health status         
 Excellent/very good20634.54,81755.838346.220,81265.3<.001
 Good24737.32,97230.230332.99,95127.0 
 Fair/poor22728.21,47314.022020.93,1957.7 
Smoking status         
 Current smoker22933.82,06522.617822.34,34213.6<.001
 Other41766.26,54477.464877.726,58686.4 
ADL limitations         
 Yes11215.47677.5575.01,1372.8<.001
 No56884.68,48092.584995.032,78197.2 
IADL limitations         
 Yes17522.81,20011.71029.22,0925.3<.001
 No50577.28,05488.380490.831,83494.7 
Activities disability         
 Yes43261.93,12431.528527.35,05913.3<.001
 No24538.16,11568.561672.728,78986.7 
Pain groups         
 Quite/extreme37153.42,81330.217217.63,4549.2<.001
 Little/moderate20233.33,35640.437746.211,96838.4 
 No pain7613.32,52029.428536.215,80252.4 
Comorbid conditions         
 Arthritis50572.24,64050.539343.610,07330.2<.001
 Anxiety47969.81,48917.162069.73,68112.1<.001
 Depression30442.41,79419.934438.13,96112.6<.001
 Cancer10616.41,00612.711513.72,6259.5<.001
 COPD23334.21,60717.518820.14,37813.5<.001
 Diabetes16825.31,65316.216615.76,02415.0<.001
 Heart disease21932.81,65518.120021.74,68814.8<.001
 Hypertension39056.33,81440.542545.113,82439.1<.001
 Hyperlipidemia30347.62,78131.434538.410,59031.9<.001
 Osteoporosis223.21641.9191.74981.6.037
 Thyroid disorders12819.588011.412914.63,27511.0<.001
a
Source: Medical Expenditure Panel Survey data from 2011, 2013, and 2015. The total sample was composed of 44,808 (weighted N=477,679,360) adults (age ≥18) who were alive during the calendar year (2011, 2013, and 2015). ADL, activities of daily living; BMI, body mass index; COPD, chronic obstructive pulmonary disease; IADL, instrumental activities of daily living; Wt%, weighted percentage.
b
NBenzodiazepine and opioid=680 (weighted N=7,806,636); NOpioid only=9,262 (weighted N=98,114,699); NBenzodiazepine only=906 (weighted N=10,353,654); and NNo benzodiazepine or opioid=33,960 (weighted N=361,404,371).
c
The p values represent statistical significance between the four groups on the basis of chi-square tests.
Findings from the multinomial logistic regression (Table 2) revealed that several individual-level factors were significantly associated with reporting concurrent benzodiazepine and opioid use, including being white (odds ratio [OR]=1.65, 95% confidence interval [CI]=1.18–2.30), having private insurance (OR=1.68, 95% CI=1.02–2.74), having public insurance (OR=1.65, 95% CI=1.01–2.70), living in the Southern region of the United States (OR=1.71, 95% CI=1.11–2.63), having fair/poor general health (OR=1.80, 95% CI=1.16–2.79), having good general health (OR=1.59, 95% CI=1.17–2.17), having fair/poor mental health (OR=0.61, 95% CI=0.42–0.89), smoking (OR=1.71, 95% CI=1.29–2.26), having an activities disability (OR=2.68, 95% CI=1.94–3.70), having extreme pain (OR=5.11, 95% CI=2.98–8.78), having little/moderate pain (OR=1.94, 95% CI=1.22–3.09), having arthritis (OR=1.79, 95% CI=1.37–2.35), having anxiety (OR=9.61, 95% CI=7.37–12.5), and having depression (OR=1.42, 95% CI=1.05–1.92).
TABLE 2. Association of various individual-level factors with concurrent benzodiazepine and opioid use among community-dwelling adults in the United Statesa
 Benzodiazepine and opioidOpioid onlyBenzodiazepine only
FactorOR95% CIbOR95% CIbOR95% CIb
Age      
 26–34 vs. 18–251.09.52–2.29.91.78–1.061.74.91–3.30
 35–49 vs. 18–251.90.85–4.25.71.62–.83***2.561.30–5.03**
 50–64 vs. 18–251.56.71–3.40.60.50–.72***3.131.66–5.92***
 ≥65 vs. 18–251.04.42–2.58.43.36–.53***4.192.18–8.06***
Gender      
 Female vs. male.99.75–1.29.96.88–1.041.251.02–1.52*
Race-ethnicity      
 White vs. other1.651.18–2.30**1.04.93–1.161.591.16–2.19**
 Black vs. other1.01.67–1.52.84.74–.94**2.021.38–2.96***
 Hispanic vs. other.93.48–1.81.80.69–.93**1.17.73–1.86
Marital status      
 Widowed vs. married1.04.70–1.56.92.80–1.06.92.65–1.32
 Separated/divorced vs. married.98.75–1.281.151.05–1.26**1.22.96–1.55
 Never married vs. married.76.53–1.09.89.80–1.001.26.95–1.68
Region      
 Midwest vs. Northeast1.40.90–2.181.341.20–1.49***1.521.07–2.16*
 South vs. Northeast1.711.11–2.63*1.331.19–1.49***1.631.15–2.32**
 West vs. Northeast1.43.94–2.171.401.25–1.56***1.381.00–1.90
Insurance      
 Private vs. uninsured1.681.02–2.74*1.161.02–1.33*.96.65–1.40
 Public vs. uninsured1.651.01–2.70*1.171.01–1.35*.85.57–1.26
Poverty status      
 Near poor/low income vs. poor1.07.81–1.43.98.88–1.091.481.08–2.04*
 Middle income vs. poor.89.62–1.27.87.77–.98*1.38.99–1.92
 High income vs. poor.91.60–1.38.86.75–.98*1.25.86–1.82
BMI      
 Overweight vs. underweight/normal.81.61–1.081.09.99–1.201.07.87–1.33
 Obese vs. underweight/normal.77.56–1.061.231.11–1.36***.78.61–.98*
General health status      
 Good vs. excellent/very good1.591.17–2.17**1.08.99–1.181.10.88–1.39
 Fair-poor vs. excellent/very good1.801.16–2.79**1.351.19–1.53***.96.67–1.37
Mental health status      
 Good vs. excellent/very good.82.59–1.14.87.80–.95**.99.78–1.25
 Fair-poor vs. excellent/very good.61.42–.89*.73.64–.84***1.08.77–1.51
Smoking status      
 Current smoker vs. other1.711.29–2.26***1.351.22–1.51***1.501.16–1.93**
ADL limitations      
 Yes vs. no1.42.92–2.181.521.21–1.91***1.06.58–1.93
IADL limitations      
 Yes vs. no.93.66–1.33.99.83–1.18.83.51–1.36
Activities disability      
 Yes vs. no2.681.94–3.70***1.551.40–1.72***1.351.00–1.81
Pain group      
 Quite/extreme vs. no pain5.112.98–8.78***3.583.20–4.02***1.20.83–1.74
 Little/moderate vs. no pain1.941.22–3.09**1.631.50–1.77***1.24.96–1.60
Arthritis      
 Yes vs. no1.791.37–2.35***1.751.61–1.89***1.12.91–1.39
Anxiety      
 Yes vs. no9.617.37–12.5***1.06.96–1.1714.2311.6–17.4***
Depression      
 Yes vs. no1.421.05–1.92*1.08.97–1.191.691.32–2.16***
Cancer      
 Yes vs. no1.20.84–1.711.341.17–1.52***1.27.94–1.71
COPD      
 Yes vs. no1.31.96–1.78.97.89–1.05.91.71–1.17
Diabetes      
 Yes vs. no1.00.76–1.33.86.78–.95**.88.68–1.15
Heart disease      
 Yes vs. no1.19.92–1.53.97.87–1.081.19.92–1.52
Hypertension      
 Yes vs. no1.06.80–1.42.87.80–.94***1.04.82–1.31
Hyperlipidemia      
 Yes vs. no1.03.78–1.37.88.80–.96**.90.72–1.13
Osteoporosis      
 Yes vs. no.85.43–1.681.14.83–1.57.49.24–1.00
Thyroid disorders      
 Yes vs. no1.33.94–1.88.96.84–1.10.98.72–1.33
a
Source: Medical Expenditure Panel Survey data from 2011, 2013, and 2015. The total sample was composed of 44,808 adults (age≥18) who were alive during the calendar year (2011, 2013, and 2015). ADL, activities of daily living; BMI, body mass index; COPD, chronic obstructive pulmonary disease; IADL, instrumental activities of daily living.
b
Asterisks represent statistically significant group differences by type of treatment compared with the reference group on the basis of multinomial logistic regression at α=.05. The reference group for the dependent variable in the multinomial logistic regression was “no benzodiazepine or opioid.”
*
p<.05, **p<.01, ***p<.001.

Discussion

Our findings estimate that during 2011, 2013, and 2015, more than seven million adults in the United States reported concurrent benzodiazepine and opioid use, and several individual-level factors were associated with an increased risk of using this combination. Many of these risk factors were modifiable, which is significant considering that the rate of prescribing this combination has quadrupled between 2003 and 2015 (7). Additionally, our study highlights that certain treatable health conditions may be significant predictors of concurrent benzodiazepine and opioid use along with other previously identified sociodemographic characteristics (12, 13).
The only nonmodifiable factor associated with an increased risk of concurrent benzodiazepine and opioid use was being white. This is similar to Li et al.’s (12) study in which non-Hispanic white survey participants were more likely than other racial-ethnic groups to report concurrent benzodiazepine and opioid use. Previous studies have also found that white patients are more likely to be prescribed opioids each year (21) and are more likely to experience opioid overdose (22). However, patients from other racial-ethnic minority groups are less likely to receive prescription opioids than are white patients when presenting with the same symptoms (23, 24). One could infer that this pattern puts white Americans at a greater risk of developing an opioid use disorder and subsequent overdose.
Yet, although the prevalence of deaths due to opioid overdose has been higher among whites, the rate of opioid overdose deaths has actually been higher among blacks (25). It is therefore dangerous to label the current opioid epidemic as one predominantly affecting white communities because black individuals may simply be more likely to use illicit opioids over prescription opioids. Furthermore, racial-ethnic minority groups are often not portrayed the same as whites when discussing the tragedies surrounding addiction and overdose (26). For example, it is possible that white Americans are more likely to use benzodiazepines and opioids together because they are told more often that ongoing use is medically indicated (even if dependency has developed) compared with members of racial-ethnic minority groups.
Of all modifiable risk factors analyzed, anxiety was associated with the highest risk of reporting concurrent benzodiazepine and opioid use. This finding may be because individuals with chronic pain often develop anxiety (27), which benzodiazepines are commonly used to treat. However, there are safer medication alternatives for the treatment of anxiety, such as selective serotonin reuptake inhibitors (SSRIs) and serotonin and norepinephrine reuptake inhibitors (SNRIs), that do not increase the risk of respiratory depression when combined with opioids (28). Because SSRIs and SNRIs can take weeks to months to exert their clinical effect (29), it is not uncommon for health care providers to prescribe benzodiazepines, which provide rapid relief, adjunctively during the first few weeks of initiating an SSRI or SNRI medication (despite a lack of evidence to support this practice) (30).
It is also not uncommon for benzodiazepines to end up being prescribed longer than the recommended 2–4 weeks (30), indicating the difficulty that patients have in discontinuing them. This trend can be attributed to rebound anxiety symptoms that often occur with ongoing benzodiazepine use (31). Therefore, health care providers are faced with the challenge of helping patients with anxiety achieve timely symptom relief while minimizing the risk for benzodiazepine dependence. Our study findings reveal that patients with anxiety are not only at risk of being prescribed benzodiazepines long term (30) but are also at higher risk of reporting concurrent benzodiazepine and opioid use compared with those without anxiety. Although the opioid epidemic has led to substantial nationwide efforts on improving pain management, these findings demonstrate that a similar effort is critically needed in improving the current approach for treating anxiety disorders.
Those with extreme as well as little/moderate pain were also at higher risk of reporting concurrent benzodiazepine and opioid use compared with those with no pain. Research has shown that having chronic pain and comorbid anxiety is associated with more disabling pain compared with having chronic pain without comorbid anxiety (32). Chronic pain is complex because it has both sensory and cognitive dimensions (33). In fact, prior research has demonstrated that the brain regions involved in both emotional and cognitive modulation of pain are altered in those with chronic pain (34). As a result, individuals who experience psychological distress as a result of their pain are also at increased risk for central amplification of pain (33). Thus, although pain can lead to anxiety, anxiety can also worsen pain levels.
Furthermore, evidence suggests that benzodiazepines may increase the reinforcing and rewarding effects of opioids (35). Therefore, individuals reporting higher pain levels may seek to amplify the effects of opioids by using them with benzodiazepines. This practice may make it even more difficult for patients to taper off benzodiazepine and opioid regimens when transitioning to alternative treatments for pain and anxiety. Although the risk of overdose with concurrent benzodiazepine and opioid use is highest during the initial few weeks of use (9), the longer use of these medications is continued, the more slowly they must be tapered off to avoid uncomfortable and unsafe withdrawal (36). Future research should investigate trends in the prevalence of short- versus long-term concurrent benzodiazepine and opioid use.
Those with fair/poor or good general health compared with those who reported excellent/very good health were also more likely to report concurrent benzodiazepine and opioid use. Because greater medical comorbidity burden is associated with pain and mood disturbances (37), it makes sense that this category was associated with an increased risk of using this combination. In line with this finding, those who reported an activities disability were also more likely to report concurrent benzodiazepine and opioid use. A previous systematic review found that early opioid use for musculoskeletal disorders was associated with prolonged work disability (38). Additionally, Gebauer et al. (39) found that those receiving disability benefits were more likely to be continued on opioids long term and at higher morphine equivalent doses. This finding suggests that those with an activities disability are not only at increased risk of being continued on opioids but they are more likely to have prolonged disability. This outcome is significant when considering the high economic costs of pain resulting from lower economic productivity in the United States (40).
Individuals residing in the South were more likely to report concurrent benzodiazepine and opioid use compared with other U.S. regions. This finding is in line with the study by Sun et al. (8), who found that concurrent benzodiazepine and opioid use sharply increased between 2001 and 2013 among privately insured individuals in the United States. Because this study used MarketScan data, which are more likely to include individuals from the Southern region of the United States, the reported increase in concurrent benzodiazepine and opioid use may have also been more prevalent in this region. Prescription opioid overdose rates have also reportedly been highest in the Southern region of the United States (41). Additionally, according to the National Survey on Drug Use and Health from 2012 to 2014 (42), most regions with the highest estimates of serious mental illness in the United States were in the South. Prior research has shown that socioeconomically disadvantaged individuals with comorbid serious mental illness are frequently prescribed concurrent benzodiazepine and opioids and that this combination is associated with an increase in suicidal ideation (43). This trend may be due to limited community mental health resources available for these individuals (44), resulting in ongoing use of high-risk pharmacologic treatment strategies instead.
Previous studies have also shown that people with psychiatric disorders are at increased risk of opioid abuse and overdose (4547). This finding highlights the connection between mental health and benzodiazepine and opioid use, and how it is important for policy makers to consider differences in mental health care needs across different U.S. regions to tackle this issue. A surprising finding from our study was that having fair/poor mental health compared with excellent/very good mental health was a protective factor in reporting concurrent benzodiazepine and opioid use. It is difficult to interpret why this might be, but it is possible that prescribers are more careful to avoid this medication combination in individuals with poor mental health status because they are aware that it may worsen the risk of suicidal ideation and overdose. Another possibility is that individuals reporting more positive mental health are being effectively treated with both benzodiazepines and opioids.
This study had several limitations that should be taken into consideration. The rationale for benzodiazepine and opioid use cannot be extracted from the MEPS database (e.g., insomnia vs. anxiety), and descriptions regarding which individual medications constituted the classifications “benzodiazepine” and “opioid” were not provided. Data regarding dosing frequency were not available, and reliable estimates could not be generated for whether a prescription was “as needed” because of underreporting of this variable. It also was not possible to determine whether concurrent benzodiazepine and opioid users were being tapered off their regimen or whether they may have been obtaining either medication illicitly. MEPS is a self-reported survey and as such has the possibility of recall bias. However, this recall bias is minimized by conducting the interviews regularly at an interval of 4–5 months. Lastly, the most recent MEPS data used in our study were from 2015, and it is likely that changes in benzodiazepine and opioid use patterns have occurred since then.

Conclusions

Several individual-level factors predicted the likelihood of reporting concurrent benzodiazepine and opioid use in 2011, 2013, and 2015. Comorbid anxiety was associated with the highest risk of reporting concurrent benzodiazepine and opioid use, even more so than extreme pain. This finding suggests that further research and education are urgently needed on ways to improve the treatment of anxiety disorders in addition to pain management to effectively reduce the use of this dangerous medication combination.

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Information & Authors

Information

Published In

Go to Psychiatric Services
Go to Psychiatric Services
Psychiatric Services
Pages: 1011 - 1019
PubMed: 32517642

History

Received: 6 September 2019
Revision received: 8 January 2020
Revision received: 20 February 2020
Accepted: 26 March 2020
Published online: 10 June 2020
Published in print: October 01, 2020

Keywords

  1. Opioid
  2. Benzodiazepine
  3. Adults
  4. Community
  5. United States
  6. Public health

Authors

Details

Nina Vadiei, Pharm.D., B.C.P.P. [email protected]
Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson.
Sandipan Bhattacharjee, M.S., Ph.D.
Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson.

Notes

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

Competing Interests

The authors report no financial relationships with commercial interests.

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