Table 3.
Multivariate logistic regression analyzing factors*
| Variable | OR | OR 95% CI | p value |
|---|---|---|---|
| Physician experience | |||
| Junior | 1 | ||
| Senior | 1.25 | 1.04–1.5 | 0.015 |
| Visibility score | 2.81 | 2.48–3.19 | 0.001 |
| Time to review an image | |||
| < 30 seconds | 1 | ||
| > 30 seconds | 1.60 | 1.1–2.31 | 0.013 |
| Filter type | |||
| DICOM | 1 | ||
| Retinex | 1.11 | 0.88–1.41 | 0.38 |
| GgG | 0.59 | 0.47–0.75 | 0.001 |
| Heq | 0.90 | 0.71–1.13 | 0.363 |
| BF | 0.87 | 0.69–1.09 | 0.232 |
| Confidence index | 1.13 | 1.06–1.21 | 0.001 |
| Type of fracture | |||
| None | 1 | ||
| Base of neck | 0.15 | 0.11–0.22 | 0.001 |
| Intertrochanter | 0.49 | 0.36–0.67 | 0.001 |
| Subcapital | 0.20 | 0.15–0.27 | 0.001 |
| Seniors and time > 30 seconds | 0.62 | 0.45–0.86 | 0.004 |
| Visibility score and time > 30 seconds | 0.82 | 0.68–0.98 | 0.028 |
* Odds ratio > 1 indicates increasing chance for correct diagnosis (fracture or no fracture); OR = odds ratio; CI = confidence interval; GgG = triple gray filter; Heq = adaptive histogram equalization filter; BF = bone filter.