title: PHQ-9: sensitivity to change over time.
authors.forename: Isobel M
authors.initials: IM
authors.lastname: Cameron
authors.forename: Ian C
authors.initials: IC
authors.lastname: Reid
authors.forename: Kenneth
authors.initials: K
authors.lastname: Lawton
mesh_terms: D003866:Depressive Disorder / Q000175:diagnosis*; D006801:Humans; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards