Table 2. Univariate and multivariate logistic regression analyses of risk factors associated with additional resection after iMRI in endonasal surgery for pituitary adenoma.
| Variables | Model 1 | Model 2 | ||
|---|---|---|---|---|
| Odds ratio (95% CI) | p | Odds ratio (95% CI) | p | |
| Maximum tumor diameter | 1.11 (1.04–1.19) | 0.012 | 1.10 (1.01–1.08) | 0.017 |
| Suprasellar lobulation ratio | 25.6 (0.61–1068.1) | 0.089 | 24.3 (0.56–1051.8) | 0.097 |
| Number of prior surgeries | 2.31 (0.98–5.44) | 0.056 | 2.28 (0.95–5.43) | 0.064 |
| Knosp classification | NA | NA | 1.05 (0.62–1.77) | 0.864 |
Model 1 was obtained using a stepwise method. Model 2 was calculated by adding Knosp grade as a covariate.
iMRI: intraoperative high-field magnetic resonance imaging.