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Letter to the Editor

Published Online: 1 February 2002

Dr. Di Maggio and Colleagues Reply

CAROLE DI MAGGIO, M.D., MARIA MARTINEZ, PH.D., JEAN-FRANÇOIS MÉNARD, PH.D., MICHEL PETIT, M.D., and FLORENCE THIBAUT, M.D., PH.D.Authors Info & Affiliations

Publication: American Journal of Psychiatry

Volume 159, Number 2

https://doi.org/10.1176/appi.ajp.159.2.322-a

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To the Editor: We calculated mean ages for the cohorts in our study, taking into account their different age structures. For the third cohort (1965–1984), the maximum age of the individuals was 29 (born in 1967 and hospitalized in 1996.)

In order to take this bias into account, we analyzed the data for only the patients with an onset before age 29 in the three cohorts. The cohort effect remained among the three groups, showing an increasingly lower age at onset of first psychotic symptoms from the first cohort (1905–1944) (23 years) to the third cohort (1965–1984) (20 years) and no effect of gender (p<0.00005).

Information & Authors

Information

Published In

American Journal of Psychiatry

Volume 159 • Number 2 • February 2002

Pages: 322-a - 322

History

Published online: 1 February 2002

Published in print: February 2002

Authors

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CAROLE DI MAGGIO, M.D.

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MARIA MARTINEZ, PH.D.

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JEAN-FRANÇOIS MÉNARD, PH.D.

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MICHEL PETIT, M.D.

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FLORENCE THIBAUT, M.D., PH.D.

Rouen Cedex, France

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Dr. Di Maggio and Colleagues Reply