Table 5 Frequency of study design
Study type | Number of articles (%) |
|---|---|
Prospective cohort | 127 (32.5) |
Case report | 66 (16.9) |
Randomized controlled trial | 31 (7.9) |
Cross sectional | 29 (7.4) |
Systematic review | 19 (4.9) |
Case series | 17 (4.3) |
Psychometric analysis | 17 (4.3) |
Retrospective cohort | 17 (4.3) |
Survey | 13 (3.3) |
Qualitative | 10 (2.6) |
Case control | 8 (2.0) |
Technological report | 6 (1.5) |
Secondary analysis | 6 (1.5) |
Cross over | 6 (1.5) |
Cadaver or animal | 5 (1.3) |
Quasi experimental | 4 (1.0) |
Model analysis | 4 (1.0) |
Mixed method | 2 (0.5) |
Bibliometric analysis | 2 (0.5) |
Policy analysis | 1 (0.3) |
Economic analysis | 1 (0.3) |
Total | 391 (100) |