Table 2.
Authors | Year | Criteria |
Total | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |||
Davidovitch et al15 | 2011 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 19 |
Duan et al23 | 2014 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 17 |
Guo et al20 | 2015 | 2 | 1 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 21 |
Harris et al21 | 2006 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 19 |
Huang25 | 2013 | 2 | 1 | 1 | 2 | 0 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 18 |
Pan24 | 2013 | 2 | 0 | 1 | 1 | 0 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 14 |
Richards et al12 | 2012 | 2 | 2 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 20 |
Xiao et al22 | 2005 | 2 | 0 | 1 | 2 | 0 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 15 |
The criteria included the following items: (1) a clearly stated aim; (2) inclusion of consecutive patients; (3) prospective data collection; (4) endpoints appropriate to the aim of the study; (5) unbiased assessment of the study endpoint; (6) a follow-up period appropriate to the aims of the study; (7) <5% loss to follow-up; (8) prospective calculation of the sample size; (9) an adequate control group; (10) contemporary groups; (11) baseline equivalence of groups; (12) adequate statistical analyses. Items were scored as follows: 0 (not reported); 1 (reported but inadequate); or 2 (reported and adequate). The ideal global score for comparative studies was 24.