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Table 2 General description of included studies in terms of publication year, data collection year, and study wideness

From: New insight into the informal patients’ payments on the evidence of literature: a systematic review study

Classification category

Sub-categories

N

Appendix-Index of publication

Publication year

1990–1995

0

–

1996–2000

2

21, 58

2001–2005

5

2,6, 12, 52, 57

2006–2010

10

1, 20, 23, 30, 32, 38, 51, 54, 61, 62

2011–2017

45

3,4,5,7,8, 9, 10, 11, 13,14, 15, 16, 17, 18,19, 22, 24, 25, 26, 27, 28, 29, 31, 33, 34, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 53, 55, 56, 59, 60

Data Collection year

1990–1995

1

58

1996–2000

2

2, 57

2001–2005

8

1,20, 23, 32, 39, 51, 52, 54

2006–2010

20

3,4, 11, 14, 15, 16, 18, 19, 24, 26, 28, 29, 34, 35, 36, 43, 44, 46, 50, 62

2011–2017

19

5, 7, 9, 10, 13, 22, 25, 27, 33, 37, 40, 45, 47, 48, 49, 55, 56, 59, 60

Not clear

12

6, 8, 12, 17, 21, 30, 31, 38, 41,42, 53,61

Study Wideness

Single-country

45

1, 2,4, 5,6, 7,8,10, 11, 12, 14, 15, 17, 18, 19, 20, 22, 23, 24, 25, 26, 28, 29, 30, 32, 33, 35, 39, 40, 41, 42, 43,44, 46, 47, 49, 51, 52, 53, 54, 55, 56, 58, 59, 60

Cross-countries

17

3,9, 13, 16, 21, 27, 31, 34, 36, 37, 38, 45, 48, 50, 57, 61, 62