Longitudinal work ability index (wai): a case study with workers in an agricultural research company

The main goal of this study is to describe the variability in work ability over time and verify influences professional sociodemographic variables. It a longitudinal conducted with 148 employees an agricultural research company city located countryside São Paulo state, Brazil. Work Ability Index (WAI) questionnaire was applied each individual sample two times: December 2018 June 2019. Different statistical analyzes data were performed using t-Student hypothesis tests for paired data, multiple linear regression models normal errors, logistic Bayesian beta assuming dependent WAI measures (the novelty study). From obtained results, it concluded that average decreases time. Some covariates as education, physical activity, position company, number children nature task have some influence on WAI. results analysis show most important factor affecting workers index both times activity.