Table 1.
Demographic characteristics of participants.
| Characteristics | Urban | Rural | Total | Statistics, P |
|---|---|---|---|---|
| Number interviewed (number, %) | 4761 (100.0) | 6920 (100.0) | 11,681 (100.0) | |
| Age (year, Mean ± SD) | 33.9 ±11.6 | 34.0 ±11.9 | 34.0 ±11.8 | Z = −0.45, P = 0.651 |
| Age group (number, %) | ||||
| 15–19 | 594 (12.5) | 940 (13.6) | 1534 (13.1) | χ2 = 12.49, P =0.131 |
| 20–24 | 612 (12.9) | 810 (11.7) | 1422 (12.2) | |
| 25–29 | 705 (14.8) | 945 (13.7) | 1650 (14.1) | |
| 30–34 | 682 (14.3) | 1061 (15.3) | 1743 (14.9) | |
| 35–39 | 649 (13.6) | 889 (12.8) | 1538 (13.2) | |
| 40–44 | 464 (9.7) | 687 (9.9) | 1151 (9.9) | |
| 45–49 | 452 (9.5) | 681 (9.8) | 1133 (9.7) | |
| 50–54 | 356 (7.5) | 531 (7.7) | 887 (7.6) | |
| 55–59 | 247 (5.2) | 376 (5.4) | 623 (5.3) | |
| Marital status (number, %) | ||||
| Unmarried | 1283 (26.9) | 1383 (20.0) | 2666 (22.8) | χ2 =143.50, P < 0.0001 |
| Married | 3317 (69.7) | 5403 (78.1) | 8720 (74.7) | |
| Divorced/widow | 157 (3.3) | 101 (1.5) | 258 (2.2) | |
| Othersa | 4 (0.1) | 33 (0.5) | 37 (0.3) | |
| Level of education (number, %) | ||||
| Primary school and below | 159 (3.3) | 2353 (34.0) | 2512 (21.5) | χ2 =4646.00, P < 0.0001 |
| Junior middle school | 645(13.5) | 2814 (40.7) | 3459 (29.6) | |
| Senior middle school | 1555 (32.7) | 1439 (20.8) | 2994 (25.6) | |
| College and above | 2402 (50.5) | 314 (4.5) | 2716 (23.3) | |
| Career (number, %) | ||||
| Student | 773 (16.2) | 959 (13.9) | 1732 (14.8) | χ2 =12.63, P = 0.0003 |
| Others | 3988 (83.8) | 5961 (86.1) | 9949 (85.2) | |
| Menarche age (year, Mean ± SD) | 12.7 ±1.5 | 13.7 ±1.8 | 13.3 ±1.8 | Z = −32, P < 0.0001 |
SD, standard deviation.
a
Including cohabitation, separation or remarriage.