Figure 3From: Olanzapine is superior to lamotrigine in the prevention of bipolar depression: a naturalistic observational study Time to recurrence into any mood episode: Kaplan-Meier survival curves. The olanzapine group did not differ from the lamotrigine group in time to recurrence to any mood episode (χ2 = 1.68, df = 1, p = .195, log-rank test).Back to article page