Table 1.
Baseline characteristics in women with and without hysterectomy.
| Hysterectomy(n = 7088) | Matched cohort(n = 27845) | P-value | |
| Age, yr | |||
| 30–39 | 1226 (17.3) | 5487 (19.7) | <.0001 |
| 40–49 | 5862 (82.7) | 22358 (80.3) | |
| Median (Q1, Q3) | 44.2 (41.3, 46.7) | 44.3 (41.0, 47.2) | .0008 |
| Urbanization | |||
| 1 | 2328 (32.8) | 9245 (33.2) | .4041 |
| 2 | 2228 (31.4) | 8548 (30.7) | |
| 3 | 1214 (17.1) | 4683 (16.8) | |
| 4 | 1318 (18.6) | 5369 (19.3) | |
| Income | |||
| 0–15000 | 1587 (22.4) | 6587 (23.7) | .0003 |
| 15000–30000 | 4121 (58.1) | 15452 (55.5) | |
| ≥30000 | 1380 (19.5) | 5806 (20.9) | |
| Occupation | |||
| White collar | 3887 (54.8) | 15738 (56.5) | <.0001 |
| Blue collar | 2712 (38.3) | 9938 (35.7) | |
| Other | 489 (6.9) | 2169 (7.8) | |
| Follow-up duration, years | |||
| Median (Q1, Q3) | 7.1 (3.8, 10.7) | 7.1 (4.4, 10.1) | .0001 |
| Oophorectomy | 712 (10.0) | 2276 (8.2) | <.0001 |
| Comorbidity, n (%) | |||
| Menopause | 361 (5.1) | 1434 (5.1) | .8466 |
| Hypertension | 832 (11.7) | 2933 (10.5) | .0035 |
| Hyperlipidemia | 630 (8.9) | 2304 (8.3) | .0962 |
| CKD | 50 (0.7) | 198 (0.7) | .9596 |
| CAD | 389 (5.5) | 1395 (5.0) | .1025 |
| Heart failure | 52 (0.7) | 191 (0.7) | .6662 |
| Stroke | 220 (3.1) | 835 (3.0) | .6444 |
| Depression | 503 (7.1) | 1835 (6.6) | .1277 |
| Insomnia | 2927 (41.3) | 11008 (39.5) | .0068 |
P-values were calculated by Chi-squared tests for categorical variables, such as age groups, urbanization, level of income, occupation, oophorectomy, and comorbidities.
For continuous variables, median age and follow-up duration, the P-values were calculated by Wilcoxon rank-sum tests.
P-values less than .05 were considered significant.
CAD = coronary artery disease, CKD = chronic kidney disease.