The study included 535 women whose mothers had diabetes, 566 women whose fathers had diabetes, 77 women with two parents who had diabetes, and 4,672 women with no family history of diabetes.

STEP-BD is evaluating all the best-practice treatment options used for bipolar disorder: mood-stabilizing medications, antidepressants, atypical antipsychotics, monoamine oxidase inhibitors, and psychosocial interventions - or "talk" therapies - including cognitive behavioral therapy, family-focused therapy, interpersonal and social rhythm therapy, and psychoeducation.