Estimating trends in serious psychological distress and depression among 18- to 64-year-olds in the United States from 2004 to 2019 using K6 and PHQ scales
Abstract Background Information from large national surveys is potentially useful for examining trends in mental health, but prior research has obtained inconsistent findings. This study attempts to determine whether Kessler 6 and Patient Health Questionnaire measures from different surveys consistently indicate trends...