Table 2

Demographic data on participants with COPSOQ / ERI (employed persons only)
Completed questionnaire (employed persons)* No questionnaire (persons not employed) Total
N persons (%) 2,783 (55.7%) 2,215 (44.3%) 4,998 (100%)
Mean age (SD),range 49.18 (8.08) 35-74 63.41 (8.69) 35-74 55.49 (10.95) 35-74
Gender (% female) 45.7% 53,5% 49.2%

*Only employed study participants received and completed the respective questionnaires. For two persons no data were available.

Nuebling et al.

Nuebling et al. BMC Public Health 2013 13:538   doi:10.1186/1471-2458-13-538

Open Data