Depression Decision Support in Primary Care: A Cluster Randomized Trial

Figure 3.
Figure 3. Unadjusted mean Patient Health Questionnaire-9 (PHQ-9) depression scores over time.

P = 0.019 for initial improvement from baseline (quadratic model), comparing intervention and usual care groups.

This Article

  1. Ann Intern Med October 3, 2006 vol. 145 no. 7 477-487
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