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Distribution of study methods
| Study methods | No. of publications (%) |
|---|---|
| Primary data collection | 114 (78.1) |
| Questionnaires | 97 (66.4) |
| Scoring evaluations | 17 (11.6) |
| Pre-test and post-test comparisons | 12 (8.2) |
| Randomized trials | 5 (3.4) |
| Documentation | 32 (21.9) |
| Exam/test results | 2 (1.4) |
| Publication search | 17 (11.6) |
| Electronic records | 15 (10.3) |
| Focus groups | 6 (4.1) |
| Interviews | 2 (1.4) |
