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Table 1 Study design of included studies from Nordic trauma research, 2005–2018

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)