From: Trauma research in the Nordic countries, 1995–2018 – a systematic review
Study design | Number of studies, N (%) |
---|---|
Meta-analysis | 1 (0.1) |
Randomised double-blinded controlled trials | 3 (0.4) |
Randomised controlled trials | 13 (1.6) |
Cohort | 505 (61.2) |
Case-control | 35 (4.2) |
Case series | 259 (31.4) |
Case report | 10 (1.2) |
Total | 825 (100) |