Reliability and validity testing of the CDC Worksite Health ScoreCard: an assessment tool to help employers prevent heart disease, stroke, and related health conditions.

Abstract

To develop, evaluate, and improve the reliability and validity of the CDC Worksite Health ScoreCard (HSC). We tested interrater reliability by piloting the HSC at 93 worksites, examining question response concurrence between two representatives from each worksite. We conducted cognitive interviews and site visits to evaluate face validity of items and refined the instrument for general distribution. The mean question concurrence rate was 77%. Respondents reported the tool to be useful, and on average 49% of all possible interventions were in place at the surveyed worksites. The interviews highlighted issues undermining reliability and validity, which were addressed in the final version of the instrument. The revised HSC is a reasonably valid and reliable tool for assessing worksite health promotion programs, policies, and environmental supports directed at preventing cardiovascular disease.