Population Assessment of Tobacco and Health (PATH) reliability and validity study: selected reliability and validity estimates

Introduction This paper reports a study done to estimate the reliability and validity of answers to the Youth and Adult questionnaires of the Population Assessment of Tobacco and Health (PATH) Study. Methods 407 adults and 117 youth respondents completed the wave 4 (2016–2017) PATH Study interview twice, 6–24 days apart. The reinterview data were used to estimate the reliability of answers to the questionnaire. Kappa statistics, gross...