Table 2.
Changes in GPs' diagnoses and diagnostic confidence
| Original randomisation | Between-group changea | ||
|---|---|---|---|
| MRI referral | Orthopaedic referral | ||
| Diagnosis altered, n (%) | |||
| Yes | 170/279 (61) | 165/266 (62) | χ2 = 0.07, |
| No | 109/279 (39) | 101/266 (38) | P = 0.79 |
| Change in diagnostic confidence, n (%) | |||
| Increased | 168/264 (64) | 80/249 (32) | χ2 = 51.43, |
| No effect | 77/264 (29) | 129/249 (52) | P<0.001 |
| Decreased | 19/264 (7) | 40/249 (16) | |
| Within-group changeb | P<0.001 | P = 0.006 | |
a
The χ2 test.
b
The Wilcoxon-signed rank test for within-group change in diagnostic confidence between trial entry and follow-up.