Medication plus cognitive therapy (CT group) v medication alone (control group) in DSM-IV bipolar I disorder*

Outcomes atFollow up periodCT groupControl groupRRR (95% CI)NNT (CI)
*Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article.
Patients with ⩾1 relapseMonths 1–3063.8%84.3%24.3% (4.3 to 42.4)5 (3 to 32)
Months 13–3057.8%69.6%16.9% (−13.6 to 40.4)Not significant