Methods to Assess Measurement Error in Questionnaires of Sedentary Behavior.

ABSTRACT: Sedentary behavior has already been associated with mortality, cardiovascular disease, and cancer. Questionnaires are an affordable tool for measuring sedentary behavior in large epidemiological studies. Here, we introduce and evaluate two statistical methods for quantifying measurement error in questionnaires. Accurate estimates are needed for assessing questionnaire quality. The two methods would be applied to validation studies that measure a sedentary behavior by both questionnaire and accelerometer on multiple days. The first method fits a reduced model by assuming the accelerometer is without error, while the second method fits a more complete model that allows both measures to have error. Because accelerometers tend to be highly accurate, we show that ignoring the accelerometer's me

SUBMITTER: Sampson JN 

PROVIDER: S-EPMC4915393 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature