| First author |
Gender (% of men among participants) |
Socio-economic status (% of high SES among participants) |
|---|---|---|
| Aberle et al. 2010 | 59.0 | 54.7 (education) |
| Blanchon et al. 2007 | 70.5 | |
| Doria-Rose et al. 2012 | 57.6 | 47.4 (education) |
| Ford et al. 2003 | 45.0 | 69.3 (education) |
| Hestbech et al. 2011 | 55.3 | 47.2 (education) |
| Kamposioras et al. 2006 | 46.4 | 31.1 (occupation) |
| Kondo et al. 2011 | 22.0 | |
| McRonald et al. 2014 | 50.0 | 57.9 (deprivation index) |
| Nakayama et al. 2002 | 74.6 | |
| Nawa et al. 2002 | 79.4 | |
| Pegna et al. 2009 | 64.7 | |
| Van der Aalst et al. 2010 | Only males | 52.0 (education) |
| Wildstein et al. 2011 | 47.0 | 60.0 (education) |
| Zakrzewska et al. 2014 | 51.0 | 44.3 (Income) |
| Mean | 55.6 | 51.5 |