Characteristic | Included studies, n (%) |
---|---|
Country | |
UK | 6 (38) |
The Netherlands | 4 (25) |
US | 3 (19) |
Australia | 2 (13) |
Norway | 1 (6) |
Study design | |
Cluster RCT | 15 (94) |
RCT | 1 (6) |
Setting | |
Single centre | 2 (13) |
Multicentre | 14 (88) |
Indication for medical testsa | |
Specified | 9 (56) |
Low back pain | 4 (25) |
Othersb | 5 (31) |
Not specified | 7 (44) |
Type of medical testsa | |
Laboratory tests | 8 (50) |
Imaging | 11 (69) |
Physiology | 3 (19) |