Table 1 General characteristics by duration of OC use (N = 3,386)
Characteristics | Duration of OC use | P-value | ||
|---|---|---|---|---|
Never user (n = 2,713) | < 30 months (n = 489) | ≥ 30 months (n = 184) | ||
Demographic factors | ||||
Age (years) | 64.1 ± 0.3 | 64.4 ± 0.5 | 65.0 ± 0.8 | 0.544 |
BMI (kg/m2) | 24.1 ± 0.1 | 24.3 ± 0.2 | 24.9 ± 0.3 | 0.013 |
Quartile of monthly household income (n, %) | 0.629 | |||
Upper | 651 (22.1) | 111 (21.2) | 43 (23.8) | |
Middle-high | 671 (25.9) | 118 (23.4) | 44 (20.7) | |
Middle-low | 673 (26.1) | 134 (29.0) | 46 (24.0) | |
Low | 685 (25.9) | 120 (26.4) | 50 (31.4) | |
Education level | 0.198 | |||
≤ Middle school | 2097 (78.3) | 405 (79.6) | 161 (87.8) | |
High school | 456 (16.0) | 67 (16.0) | 19 (8.9) | |
≥ University | 160 (5.7) | 17 (4.4) | 4 (3.3) | |
Lifestyle and behavioral factors | ||||
Current smoker | 98 (4.2) | 16 (5.6) | 6 (4.6) | 0.583 |
Heavy drinker | 25 (1.0) | 4 (0.8) | 3 (4.2) | 0.018 |
Adequate physical activity | 403 (14.8) | 69 (12.8) | 25 (12.5) | 0.518 |
DM (n, %) | 346 (14.3) | 76 (15.0) | 32 (19.8) | 0.297 |
Dyslipidemia (n, %) | ||||
Age at menopause (years) | 49.7 ± 0.1 | 49.9 ± 0.2 | 49.4 ± 0.4 | 0.548 |
Number of pregnancies | 4.9 ± 0.1 | 5.4 ± 0.1 | 5.9 ± 0.3 | 0.055 |