Table 4.
Studies used by the participants in clinical practice. Scores were given from 1 (strongly disagree) to 5 (strongly agree).
| Level of evidence | Studies | Studies used, mean (95% CI) |
| I | (1) RCTa, (2) meta-analysis of RCTs with homogeneous results | 3.8 (2.14-5.46) |
| II | (1) Prospective comparative study (therapeutic) | 3.9 (2.48-5.32) |
| II | (2) Meta-analysis of level II studies | 3.9 (2.34-5.46) |
| II | (3) Meta-analysis of level I studies with inconsistent results | 3.3 (1.54-5.06) |
| III | (1) (Meta-analysis of) retrospective cohort study | 3.8 (2.36-5.24) |
| III | (2) Case-control study | 3.6 (2.06-5.14) |
| IV | (1) Case series | 3.7 (2.02-5.38) |
| V | (1) Case report, (2) expert opinion, (3) personal observation | 3.5 (1.64-5.36) |
aRCT: randomized controlled trial.