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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Biol Psychiatry. 2012 Apr 26;72(7):580–587. doi: 10.1016/j.biopsych.2012.03.015

Table 3.

Means (± Standard deviations) of primary and secondary clinical measures of depression severity by treatment assignment.

Treatment N Depression Measure Mean Score (± Standard Deviation) Number of Participants
Baseline Week 4 Change Respondersa Nonresponders
Sertraline 55
QIDS-C 16.4 (± 3.3) 8.5 (± 4.3) -7.9 (± 4.9) *** 27 28
HDRS-17 24.9 (± 2.8) 11.5 (± 5.8) -13.4 (± 5.7) *** 33 22
QIDS-SR 15.8 (± 3.7) 8.1 (± 4.7) -7.7 (± 5.5) *** 29 26
Placebo 50
QIDS-C 17.4 (± 2.8) 9.2 (± 4.6) -8.2 (± 4.7) *** 24 26
HDRS-17 24.6 (± 2.5) 13.9 (± 6.4) -10.7 (± 6.6) *** 20 30
QIDS-SR 16.6 (± 3.6) 8.8 (± 4.6) -7.9 (± 4.3) *** 25 25
***

p. < .001

a

Responder = 50% or greater reduction of depression severity from baseline to Week 4