Accuracy of the Patient Health Questionnaire-9 for screening to detect major depression: updated systematic review and individual participant data meta-analysis

Zelalem Negeri

University of Waterloo

Brooke Levis

University of Ottawa

Ying Sun

Anhui Provincial Center for Disease Control and Prevention

ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam)

BMJ

McGill University

McGill University Health Centre

Keele University