Table 1 Participants’ sociodemographic, gynecological and obstetric characteristics
Variables | Category | Frequency (%) |
|---|---|---|
Age (years) n = 10,058 | 18–23 | 5205 (51.7) |
24–39 | 4410 (43.8) | |
40–54 | 443 (4.5) | |
Brazilian geographic region n = 10030 | North | 389 (3.9) |
North East | 1481 (14.8) | |
Midwest | 593 (5.9) | |
Southeast | 5870 (58.5) | |
South | 1697 (16.9) | |
Marital Status n = 10028 | Married or cohabiting | 1900 (19.0) |
Single or divorced or widow | 8128 (81.0) | |
Scholarly n = 10061 | Up to 8 years | 32 (0.3) |
Between 9 and 11 | 1167 (11.6) | |
More than 11 | 8862 (88.1) | |
Previous pregnancies n = 10054 | None | 8530 (84.8) |
1 | 866 (8.7) | |
2 | 444 (4.4) | |
3 or more | 214 (2.1) | |
Type of birth n = 1313 | Vaginal | 420 (32.0) |
Caesarean | 791 (60.2) | |
Vaginal and caesarean | 102 (7.8) | |
Age of menarche n = 9943 | ≤ 10 years | 1211 (12.2) |
11 years | 2686 (27.0) | |
12 years | 2899 (29.2) | |
13 years | 1875 (18.8) | |
14 years | 910 (9.1) | |
≥ 15 years old | 362 (3.7) | |
Duration of the menstrual cycle n = 9946 | Irregular | 1732 (17.2) |
Less than 28 days | 1634 (16.5) | |
28–29 days | 4508 (45.4) | |
30–31 days | 1487 (15.0) | |
More than 32 days | 585 (5.9) | |
Use of hormonal contraceptives n = 8999 | Yes | 3421 (38.0) |
No | 5578 (62.0) | |
Medicine for dysmenorrhea n = 9932 | Yes | 6967 (70.1) |
No | 2965 (29.9) |