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Table 2 Logistic regression analyses for the study populations with BD I, BD II, BD NOS and the combined population, adjusted for age, sex, and psychiatric comorbidity

From: Regional lithium prescription rates and recurrence in bipolar disorder

Logistic regression analyses n aOR CI, 95% P R2
BD I
 Any episode 5618 0.78 0.70–0.87 < 0.001 0.06–0.08
 Depressive episode 5607 0.81 0.72–0.90 < 0.001 0.05–0.07
 Manic episode 5592 0.85 0.72–0.97 0.02 0.02–0.03
 Hypomanic episode 5598 0.90 0.79–0.99 0.05 0.03–0.04
 Mixed episode 5556 0.93 0.78–1.07   0.03–0.06
BD II
 Any episode 5574 0.90 0.84–0.96 0.001 0.07–0.1
 Depressive episode 5566 0.93 0.87–0.99 0.02 0.06–0.08
 Hypomanic episode 5557 0.87 0.80–0.93 < 0.001 0.06–0.09
 Mixed episode 5547 0.96 0.87–1.04   0.03–0.06
BD NOS
 Any episode 3424 0.82 0.74–0.90  < 0.001 0.1–0.14
 Depressive episode 3412 0.82 0.74–0.90 < 0.001 0.09–0.12
 Hypomanic episode 3406 0.93 0.83–1.02   0.06–0.09
 Mixed episode 3412 1.01 0.89–1.13   0.05–0.09
Total, all subpopulations
 Any episode 14,616 0.84 0.80–0.88 < 0.001 0.09–0.12
 Depressive episode 14,585 0.87 0.83–0.92 < 0.001 0.08–0.10
 Hypomanic episode 14,561 0.89 0.84–0.94 < 0.001 0.05–0.08
 Mixed episode 14,515 0.94 0.88–1.01 0.097 0.04–0.07
  1. Adjusted odds ratios (aOR) estimating differences for patients in counties with high lithium prevalence compared with counties with low lithium prevalence. The aOR can be interpreted as the decreased odds for a mood episode in the population when the lithium prescription rate is greater by 10% points