Table 3 Quality checklist scores for included studies
Author | Reporting | Internal Validity (Bias) | Internal Validity (Confounding) | External validity | Power | Total |
|---|---|---|---|---|---|---|
Abood, D.A et al. [33] | 7 | 6 | 4 | 2 | 1 | 20 |
Manios, Y et al. [34] | 8 | 5 | 2 | 0 | 0 | 15 |
Petrogianni, M et al. [35] | 9 | 5 | 3 | 0 | 0 | 17 |
McPhail, M et al. [36] | 11 | 5 | 5 | 2 | 0 | 23 |
Miller, C.K et al. [37] | 11 | 6 | 5 | 2 | 1 | 25 |
Rodriguez, M.A et al. [38] | 7 | 5 | 4 | 1 | 0 | 17 |
Peters, N.C et al. [39] | 8 | 5 | 3 | 3 | 1 | 20 |
LeBlanc, V et al. [40] | 10 | 5 | 3 | 1 | 1 | 20 |
Schwarzer, R et al. [41] | 9 | 4 | 3 | 1 | 0 | 17 |