Table 3 Multivariate analysis for preoperative ultrasound features of 1523 cases with gallbladder polyps in different age groups
| Â | Young adults group (n=622) | Middle-aged group (n=665) | Elderly group (n=236) | |||
|---|---|---|---|---|---|---|
OR (95%CI) | P | OR (95%CI) | P | OR (95%CI) | P | |
Number of polyps | ||||||
 Single vs. Multiple | 3.512 (1.785~6.907) | <0.001 | 3.576 (1.849~6.913) | <0.001 | 7.291 (2.343~22.055) | 0.001 |
Polyp size (long diameter) | ||||||
  vs. ≤10.5mm | 3.566 (1.843~6.901) | <0.001 | 5.233 (2.406~11.380) | <0.001 | 5.541 (2.404~12.772) | <0.001 |
Polyp size (short diameter) | ||||||
 vs. ≤8mm |  |  | 3.641 (1.683~7.878) | 0.001 |  |  |
Fundus | ||||||
 Broad base vs. Pedicle | 2.404 (1.209~4.777) | 0.012 |  |  | 8.302 (3.364~20.489) | <0.001 |