Fig. 1

Normative data of the WHODAS 2.0 in different age, education and occupation. The mean domain and total scores for age groups (20–29, 30–39, 40–49, 50–59, 60–69, 70–79, 80+), level of education (reported as university, high school or mandatory studies) and main occupation (employed or own a company, students or trainees, old-age pension or long-term sick leave). A one-way analysis of variance (ANOVA), followed by Tukey’s honestly significant difference post hoc test was performed. *In the pairwise subgroup comparison the age group 80+ , mandatory level of education and main occupation reported as long-term sick leave were significant (p < 0.05, 95% CI)