Multivariate linear regression analyses for factors influencing WAI (adjusted for gender and age); currently employed participants (n = 1361).

The following factors had no influence on the WAI: level of most intensive complaints ever, level of complaints in the year of the claim, NRL-avoidance in the private environment, asthma in the 6 months before the survey, period of filing the claim to the survey.1differing n due to missing values.