Studies | Proportion of agency referred participants recruited | Proportion of self-referred participants recruited |
---|---|---|
Bouwman et al., 2017 | N/A | 71% |
Dickens et al. 2011 | 61% | N/A |
Fokkema and Knipscheer 2007 | 68% | Â |
Greenwald and Beery 2001 | 68% | N/A |
Honigh-De Vlaming et al. 2013 | Â | 48% |
Ollonqvist et al. 2008 | 100% | N/A |
Pitkala et al. 2009 | N/A | 15% |
Slegers et al. 2008 | N/A | 24% |
Average | 74% | 40% |