Table IV.
Crude and adjusted hazard ratios (HR) for having a major uterine procedure associated with fibroid size at enrollment (diameter of largest fibroid), National Institute of Environmental Health Sciences Uterine Fibroid Study 8-year follow-up (N = 895).
| Fibroid size | N | HR | 95% CIb | aHRa | 95% CIb |
|---|---|---|---|---|---|
| No fibroids | 323 | 1.0 | – | 1.0 | – |
| <2 cm | 155 | 3.9 | 1.4–10.6 | 4.0 | 1.4–11.1 |
| 2–3.99 cm | 264 | 10.4 | 4.4–24.5 | 10.4 | 4.4–24.8 |
| ≥4 cm | 153 | 26.7 | 11.6–62.4 | 27.4 | 11.5–65.2 |
aModels adjusted for age and ethnicity.
bCI, confidence interval.