Table 2 Characteristics of clinical registries
From: Defining key design elements of registry-based randomised controlled trials: a scoping review
| Â | N studies |
|---|---|
Time-period coverage | |
 Reported | 8 |
 Not reported | 5 |
Population coverage | |
 Reported | 13 |
 Not reported | 0 |
Consent stated | |
 Yes | 9 |
 No | 4 |
Funding | |
 Reported | 10 |
 Not reported | 3 |
Data validity | |
 Reported | 10 |
 Not reported | 3 |