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Absolute difference in rate (A) and relative risk (B) of response between groups treated with selective serotonin reuptake inhibitors and placebo across time: 50% reduction in Hamilton Depression Rating Scale (HDRS) score (n=688-1428) (left); Clinical Global Impression moderately or much improved (n=166-203) (center); and HDRS score less than 7 or less than 8 (n=684) (right). Error bars represent 95% confidence intervals.
