We have with great interest read the recent report from Finland by Juvonen et al1 of a reduced incidence of schizophrenia in patients with type 1 diabetes mellitus. Their finding replicates and strengthens our marginally significant finding of a negative association (males, odds ratio [OR], 0.7; 95% confidence limits, 0.5, 1.1; females, OR, 0.7; 95% confidence limits, 0.4, 1.0)
in our report from 2006 based on independent registers in Denmark.2
Mortensen PB, Eaton WW. Diabetes Mellitus and Schizophrenia. Arch Gen Psychiatry. 2008;65(2):237–238. doi:10.1001/archgenpsychiatry.2007.30
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