Accuracy of the Patient Health Questionnaire-9 for screening to detect major depression: updated systematic review and individual participant data meta-analysis
Negeri, Z. F., Levis, B., Sun, Y., He, C., Krishnan, A., Wu, Y., … & Thombs, B. D. (2021). Accuracy of the Patient Health Questionnaire-9 for screening to detect major depression: updated systematic review and individual participant data meta-analysis. British Medical Journal, 375.