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Summary of quality indicators.
| Quality indicator | Value (N=57), n (%) | |
| Strength of evidence |
|
|
|
|
I (experimental study, RCTa, or meta-analysis of RCT) | 18 (32%) |
|
|
II (quasiexperimental study) | 10 (17%) |
|
|
III (nonexperimental, qualitative, or meta-synthesis study) | 28 (49%) |
|
|
IV (opinion) | 1 (2%) |
| Quality of evidence |
|
|
|
|
A (high quality) | 33 (58%) |
|
|
B (good quality) | 23 (40%) |
|
|
C (low quality or major flaws) | 1 (2%) |
aRCT: randomized controlled trial.
