Table 2.
Score breakdown on 22 items from the Transparent Reporting of Evaluations with Non-randomized Designs (TREND) Statement Checklist for each non-randomized study.
| Study | Items from the TREND Statement Checklist | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | Total Score | |
| de Waal et al., 2017 [30] | 1 | 1 | 0.75 | N/A | 1 | 0.66 | 0 | 0.33 | 1 | 0.5 | 0.25 | 0.85 | 0 | 0.25 | 0 | 0.5 | 0.5 | 0 | 0 | 0.33 | 1 | 1 | 10.92 |
| Saha et al., 2016 [31] | 1 | 1 | 0.5 | N/A | 1 | 0.66 | 1 | 0.66 | 0 | 0.5 | 0.75 | 0.85 | 1 | 0.5 | 0 | 1 | 0 | 1 | 0 | 0.33 | 1 | 1 | 13.75 |
| Akkermans et al., 2016 [32] | 1 | 1 | 1 | N/A | 1 | 0.66 | 0 | 0.33 | 0 | 0.5 | 0.75 | 0.71 | 0 | 0.5 | 0 | 0.5 | 0.5 | 1 | 0 | 0.33 | 1 | 1 | 11.78 |
| Uijterschout et al., 2015 [33] | 0.66 | 1 | 0.5 | N/A | 1 | 0.66 | 1 | 0.33 | 0 | 0.5 | 0.75 | 0.85 | 0 | 0.25 | 0 | 1 | 1 | 1 | 0 | 0.33 | 1 | 1 | 12.83 |
| Yamada and Leone 2014 [34] | 1 | 1 | 1 | N/A | 1 | 0.33 | 1 | 0.66 | 0 | 0.5 | 0.5 | 0.85 | 1 | 0.25 | 0 | 0.5 | 0.5 | 0 | 0 | 0.66 | 1 | 1 | 12.75 |
| Mukhopadhyay et al., 2012 [35] | 1 | 1 | 0.75 | N/A | 1 | 0.66 | 1 | 0 | 1 | 0.5 | 0.75 | 0.28 | 0 | 0.25 | 0 | 1 | 1 | 1 | 0 | 0.66 | 1 | 1 | 13.85 |
| Amin et al., 2012 [36] | 1 | 1 | 0.75 | N/A | 1 | 0.66 | 0 | 0.66 | 0 | 0.5 | 0.5 | 0.71 | 1 | 0.5 | 0 | 0.5 | 0.5 | 0 | 0 | 0.66 | 1 | 1 | 11.94 |
| Kitajima et al., 2011 [37] | 0.66 | 0.5 | 0.75 | N/A | 1 | 0.33 | 0 | 0 | 0 | 0 | 0.66 | 1 | 1 | 0.5 | 1 | 1 | 0.33 | 0 | 0 | 0.66 | 1 | 1 | 11.39 |
| Molloy et al., 2009 [38] | 0.33 | 1 | 0.75 | N/A | 1 | 0.66 | 1 | 0.66 | 0 | 0.5 | 0.5 | 0.85 | 1 | 0.5 | 0 | 1 | 0.33 | 0 | 0 | 0.33 | 1 | 1 | 12.41 |
| Amin et al., 2010 [39] | 1 | 1 | 0.75 | N/A | 1 | 0.33 | 0 | 0.33 | 0 | 0.5 | 0.5 | 0.71 | 0 | 0.5 | 0 | 1 | 0.33 | 0 | 0 | 0.33 | 1 | 1 | 10.28 |
N/A: not applicable.