References | 1. Question sufficiently described | 2. Design evident and appropriate | 3. Subject selection method | 4. Subject characteristics described | 5. If randomized, was procedure reported | 6. If blinded to investigators, was it reported | 7. If blinded to subjects, was it reported | 8. Outcome well defined and robust to measurement/misclassification bias | 9. Sample size appropriate | 10. Analysis described and appropriate | 11. Some estimate of variance reported | 12. Controlled for confounding | 13. Results reported in sufficient detail | 14. Results support conclusions | Total |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
[11] | 2 | 2 | 1 | 2 | 2 | 2 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 0.89 |
[14] | 1 | 2 | 1 | 1 | 2 | 0 | 0 | 1 | 2 | 2 | 0 | 1 | 2 | 1 | 0.57 |
[15] | 1 | 2 | 2 | 1 | 2 | 0 | 0 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 0.75 |
[16] | 2 | 2 | 2 | 2 | 1 | 0 | 0 | 2 | 1 | 1 | 0 | 0 | 2 | 2 | 0.61 |
[17] | 2 | 1 | 2 | 1 | N/A | N/A | N/A | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 0.82 |
[18] | 2 | 1 | 2 | 2 | N/A | N/A | N/A | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 0.86 |
[19] | 2 | 1 | 2 | 1 | N/A | N/A | N/A | 0 | 2 | 2 | 0 | 1 | 1 | 2 | 0.64 |