Table 1 Characteristics of included studies
Study | Study design | Study population | Age of study population | Duration of WC | Sample size |
|---|---|---|---|---|---|
Rajan, 2021 | RCT | DT, C | 46.0 ± 18.6 | 8.5 ± 5.8 | 15 (DT), 15 (C) |
Park, 2019 | RCT | WC | 62.0 ± 6.0 | 21.0 ± 3.0 | 6 (WC), 6 (C) |
Srivantichapoom, 2016 | Observational | WC, C | 47.9 ± 6.3 | 19.1 ± 5.9 | 8 (WC) |
Jackman, 2016 | Observational | WC (responders), C (non-responders) | 59.8 | 12.3 ± 11.2 | 5 (WC: responders), 4 (WC: non responders) |
Likachev, 2016 | Observational | WC | 39.7 ± 4.5 | 5.8 ± 0.65 | 29 (WC) |
Zeuner, 2013 | Observational | WC, C | 57.1 ± 10.7 | 10.9 ± 8.8 | 10 (WC), 18 (C) |
Contarino, 2007 | RCT | WC | 36.9 ± 9.7 | 9.3 ± 8.9 | 29 (WC) 10 (C) |
Kruisdijk, 2007 | RCT | WC | 47.60 ± 11.24 | 7.38 ± 6.22 | 20 (WC), 20 (C) |
Djebbdari, 2005 | Observational | WC | 46.1 ± 14.0 | 7.6 ± 8.1 | 47 (WC), |
Marion, 2003 | Observational | WC | 35.6 ± 43.13 | 4.6 ± 13.43 | 167 (WC) |
Behari, 1999 | Observational | WC | 35.75 ± 23.33 | 3.64 ± 8.48 | 16 (WC) |
Chen, 1999 | RCT | WC | 31.6 | – | 8 (WC) |
Wissel, 1996 | Observational | WC | 34.8 | 12.3 | 31 |
Turjanski, 1996 | Observational | WC, 1 MC | 36 | – | 45 (WC) |
Cole, 1995 | Observational | WC | 49.4 | 8.5 ± 5.16 | 10 (6 WC, 2TC, 2MC) |
Tsui, 1993 | RCT | WC, C | 41.75 | 5.15 | 20 |
Rivest, 1991 | Observational | WC | 43 | 9 | 12 (WC) |
Poungvarin, 1991 | Observational | WC | 36.8 ± 10.22 | 5.88 ± 7.14 | 25(WC) |
Cohen, 1989 | Observational | WC | 38 | 7 | 19 (WC) |