Number | Study/year | Country | Type of study | Type of drainage | Sex, M/F | Total number of patients in the study | N-PBD | N-DS |
---|---|---|---|---|---|---|---|---|
1 | Morris-Stiff et al. 2011 [20] | UK | Prospective cohort analysis | Internal and External | 152/128 | 280 | 118 | 162 |
2 | van der Gaag et al. 2010 [21] | USA | Randomized controlled trial | Internal and External | 119/83 | 202 | 106 | 96 |
3 | Coates et al. 2009 [22] | USA | Retrospective cohort analysis | Internal and External | 48/42 | 90 | 56 | 34 |
4 | Anderson et al. 2004 [23] | Republic of South Africa | Single center observational study | Internal and External | 4/2 | 6 | 6 | 0 |
5 | Pisters et al. 2001 [24] | USA | Retrospective cohort analysis | Internal and External | 164/136 | 300 | 207 | 93 |
6 | Sewnath et al. 2001 [25] | Netherlands | Retrospective cohort analysis | Internal | 148/142 | 290 | 232 | 58 |
7 | Martignoni et al. 2001 [26] | Switzerland | Retrospective cohort analysis | Internal and external | 140/117 | 257 | 99 | 158 |
8 | Sohn et al. 2000 [27] | USA | Retrospective cohort analysis | Internal and External | 297/270 | 567 | 408 | 159 |
9 | Figueras et al. 2000 [28] | Spain | Retrospective cohort analysis | External | − | 20 | 11 | 9 |
10 | Wig et al. 1999 [29] | India | Randomized controlled trial | External | 20/20 | 40 | 20 | 20 |
11 | Povoski et al. 1999 [30] | USA | Retrospective cohort analysis | Internal and external | 134/106 | 240 | 126 | 114 |
12 | Hochwald et al. 1999 [31] | USA | Retrospective cohort analysis | Internal and external | 40/31 | 71 | 42 | 29 |
13 | Heslin et al. 1998 [32] | USA | Retrospective cohort analysis | Internal and external | 41/33 | 74 | 39 | 35 |
14 | Marcus et al. 1998 [33] | USA | Retrospective cohort analysis | Internal | 32/20 | 52 | 22 | 30 |
15 | Karsten et al. 1996 [34] | Netherlands | Retrospective cohort analysis | Internal and external | 152/89 | 241 | 184 | 57 |
16 | Chou et al. 1996 [35] | Taiwan | Randomized controlled trial | Internal and external | 50/43 | 93 | 26 | 67 |
17 | Lai et al. 1994 [36] | Hong Kong | Randomized controlled trial | Internal | 59/28 | 87 | 43 | 44 |
18 | Bakkevold et al. 1993 [37] | Norway | Retrospective cohort analysis | Internal and external | − | 108 | 35 | 73 |
19 | Sirinek and Levine 1989 [38] | USA | Retrospective cohort analysis | Internal and external | − | 138 | 84 | 54 |
20 | Lygidakis et al. 1987 [39] | Netherlands | Retrospective cohort analysis | Internal | 21/17 | 38 | 19 | 19 |
21 | Pitt et al. 1985 [40] | USA | Randomized controlled trial | Internal and external | 45/30 | 79 | 37 | 38 |
22 | Smith et al. 1985 [41] | Australia | Randomized controlled trial | Internal and external | 20/10 | 30 | 15 | 15 |
23 | Gundry et al. 1984 [42] | USA | Retrospective cohort analysis | Internal and external | − | 50 | 25 | 25 |
24 | McPherson et al. 1984 [43] | UK | Randomized controlled trial | External | − | 65 | 34 | 31 |
25 | Hatfield et al. 1982 [44] | UK | Randomized controlled trial | External | − | 57 | 28 | 27 |
26 | Denning et al. 1981 [45] | USA | Retrospective cohort analysis | Internal and external | 29/28 | 57 | 25 | 32 |