Table 1.
Characteristics of included studies
| Study | Years | Country | Study design | Quality scalea | No. of patients (MI: Open) | Mean follow up (mo) | Mean age (y) (MI: Open) | Gender (% male) (MI: Open) |
|---|---|---|---|---|---|---|---|---|
| Scheufler et al. [12] | 2007 | Germany | RCS | 14/24 | 94 (43:51) | 16 | 56.8:53.3 | 46.5:47.1 |
| Dhall et al. [13] | 2008 | USA | RCS | 15/24 | 42 (21:21) | ≥24 | 53.0:53.0 | NA |
| Schizas et al. [10] | 2009 | Switzerland | PCS | 19/24 | 36 (18:18) | 22 | 45.5:48.1 | NA |
| Shunwu et al. [6] | 2010 | China | PCS | 20/24 | 62 (32:30) | ≥24 | 51.4:52.0 | 56.3:46.7 |
| Villavicencio et al. [14] | 2010 | USA | RCS | 17/24 | 139 (76:63) | 37.5 | 50.5:58.9 | 38.0:45.0 |
| Wang et al. [8] | 2010 | China | PCS | 19/24 | 85 (42:43) | 26.3 | 47.9:53.2 | 30.1:37.2 |
| Adogwa et al. [15] | 2011 | USA | RCS | 18/24 | 30 (15:15) | 24 | 50.8:49.7 | 46.7:33.3 |
| Lau et al. [11] | 2011 | USA | RCS | 17/24 | 22 (10:12) | >12 | 46.9:56.9 | 40.0:42.0 |
| Wang et al. [7] | 2011 | China | RCT | 14/20 | 79 (41:38) | 32.7 | 51.4:57.3 | 58.5:60.5 |
| Wang et al. [4] | 2011 | China | PCS | 19/24 | 52 (25:27) | ≥12 | 54.8:56.2 | 52.0:55.6 |
| Lee et al. [9] | 2012 | Singapore | PCS | 21/24 | 144 (72:72) | ≥24 | 52.2:56.6 | 27.8:30.6 |
RCS retrospective comparative study, PCS prospective comparative study, RCT randomized controlled trial, NA not available
aRCT was assessed using Detsky score and non-RCT was assessed using MINORS score