| Development & validation articles (n = 33) | Validation only | |
---|---|---|---|
Development | Validation | (n = 45) | |
Sample size | Â | Â | Â |
  Explanation of sample size reported | Information not extracted | 2 (6) | 4 (9) |
  Articles where the number of participants were reported | 33 (100) | 32 (97) | 44 (98) |
  Median number of participants (range) | 1360 (68, 17589824) | 1041 (87, 1117123) | 694 (49, 797373) |
  Articles where the number of events were reported | 28 (85) | 26 (79) | 36 (80) |
  Median number of events (range) | 189 (12, 90324) | 100 (14, 3623) | 108 (6, 42408) |