Table 3. Generalized estimating equations (GEE) model for evaluating the effect of selected b value or B0 on diagnostic performance of breast DWI.
| Variables | OR* | 95% CI for OR | P value |
|---|---|---|---|
| B0 | |||
| 1.5 T | – | – | – |
| 3.0 T | 1.96 | (0.61, 6.29) | 0.2583 |
| b value | |||
| 1,000 | – | – | – |
| 1,500 | 0.69 | (0.36, 1.35) | 0.2818 |
*, the optimal calculated ADC thresholds of 1.235 and 0.934 were used for b value of 1,000 and b value of 1,500 s/mm2, respectively. DWI, diffusion-weighted imaging; ADC, apparent diffusion coefficients; OR, odds ratio; CI, confidence interval.