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Table 5 Incidents of informal payments reported (31 publications reviewed)1

From: Empirical studies on informal patient payments for health care services: a systematic and critical review of research methods and instruments

% respondents Informal payments in general Gifts or gratuities only Cash payments or extra fee only Reference index in Appendix 1
  N N N  
1-10% 3 1 3 2,9,11,21,24,26,27
11-20% 4 2 1 2,3,9,12,18,20,21,27
21-30% 2 3 2 1,10,15,18,20,24
31-40% 4 - - 3,7,10,16,
41-50% 1 1 2 18,24,29,30
51-60% 2 - - 12,24
61-70% 2 - 1 1,7,15
More than 71% 1 2 - 7,20
  1. 1One publication can be associated with more than one sub-category.