Use of self-reported height and weight biases the body mass index–mortality association

Many large-scale epidemiological data sources used to evaluate the body mass index (BMI: kg/m2) mortality association have relied on BMI derived from self-reported height and weight. Although measured BMI (BMIM) and self-reported BMI (BMISR) correlate highly, self-reports are systematically biased. To rigorously examine how self-reporting bias influences the association between BMI and mortality rate. Samples representing the US...