Table 1.
Ella study population characteristics by number of pregnancies
| Characteristic | Total (n = 974) | Number of pregnancies
|
||
|---|---|---|---|---|
| 1–2 (n = 328) | 3 (n = 281) | ≥4 (n = 365) | ||
| Age at interview (y), mean ± SD | 52.6 ± 11.9 | 48.6 ± 10.8 | 50.9 ± 10.9 | 57.5 ± 11.9 |
| Education [n (%)] | ||||
| <High school | 487 (50.4) | 100 (30.8) | 134 (47.7) | 253 (70.3) |
| High school | 265 (27.4) | 108 (33.2) | 85 (30.3) | 72 (20.0) |
| ≥High school | 214 (22.2) | 117 (36.0) | 62 (22.1) | 35 (9.72) |
| Unknown | 8 | 3 | 0 | 5 |
| Employment [n (%)] | ||||
| None | 176 (18.4) | 30 (9.32) | 48 (17.5) | 98 (27.3) |
| <10 years | 315 (33.0) | 107 (33.2) | 98 (35.6) | 110 (30.6) |
| 10–19 years | 272 (28.5) | 107 (33.2) | 72 (26.2) | 93 (25.9) |
| ≥20 years | 193 (20.2) | 78 (24.2) | 57 (20.7) | 58 (16.2) |
| Unknown | 18 | 6 | 6 | 6 |
| Age at menarche (years), mean ± SD | 12.8 ± 1.6 | 12.7 ± 1.6 | 12.8 ± 1.7 | 12.9 ± 1.5 |
| Age at first pregnancy (years), mean ± SD | 22.8 ± 5.5 | 26.2 ± 6.0 | 22.3 ± 4.5 | 20.2 ± 3.8 |
| Breastfeeding [n (%)] | ||||
| Never | 228 (23.4) | 118 (36.0) | 67 (23.8) | 43 (11.8) |
| 0 to <12 months | 317 (32.6) | 137 (41.8) | 95 (33.8) | 85 (23.3) |
| 12 to <24 months | 164 (16.8) | 47 (14.3) | 60 (21.4) | 57 (15.6) |
| ≥24 months | 265 (27.2) | 26 (7.93) | 59 (21.0) | 180 (49.3) |
| Hormone contraceptive use [n (%)] | 595 (61.1) | 201 (61.3) | 188 (66.9) | 206 (56.4) |
| Hormone replacement therapy [n (%)] | ||||
| Never | 841 (86.8) | 280 (85.6) | 234 (84.5) | 327 (89.6) |
| Ever | 128 (13.2) | 47 (14.4) | 43 (15.5) | 38 (10.4) |
| Unknown | 5 | 1 | 4 | 0 |
| Smoking status [n (%)] | ||||
| Never | 681 (69.9) | 238 (72.6) | 199 (70.8) | 244 (66.9) |
| Former | 246 (25.3) | 71 (21.7) | 73 (26.0) | 102 (28.0) |
| Current | 47 (4.83) | 19 (5.79) | 9 (3.20) | 19 (5.21) |
| Alcohol use [n (%)] | ||||
| No | 573 (62.4) | 158 (51.8) | 162 (31.1) | 253 (72.7) |
| Yes | 345 (37.6) | 147 (48.2) | 103 (38.9) | 95 (27.3) |
| Unknown | 56 | 23 | 16 | 17 |
| Physical activity (METs/day), mean ± SD | 107.5 ± 124 | 104.3 ± 125 | 107.8 ± 120 | 110.2 ± 125 |
| Menopausal status, n (%) | ||||
| Premenopausal | 483 (50.3) | 204 (63.4) | 154 (55.0) | 125 (34.9) |
| Postmenopausal | 477 (49.7) | 118 (36.7) | 126 (45.0) | 233 (65.1) |
| Unknown | 14 | 6 | 1 | 7 |
| Nativity [n (%)]a | ||||
| U.S.-born | 218 (45.2) | 96 (50.5) | 71 (48.3) | 51 (35.2) |
| Foreign-born, living in U.S. <10 years | 208 (43.2) | 71 (37.4) | 61 (41.5) | 76 (52.4) |
| Foreign-born, living in U.S. ≥10 years | 56 (11.6) | 23 (12.1) | 15 (10.2) | 18 (12.4) |
| Interview language [n (%)]a | ||||
| English | 250 (51.9) | 112 (59.0) | 83 (56.5) | 55 (37.9) |
| Spanish | 232 (48.1) | 78 (41.1) | 64 (43.5) | 90 (62.1) |
| Acculturation [n (%)]a | ||||
| English-dominant | 86 (17.8) | 45 (23.7) | 30 (20.4) | 11 (7.59) |
| Bilingual | 234 (48.6) | 91 (47.9) | 75 (51.0) | 68 (46.9) |
| Spanish-dominant | 162 (33.6) | 54 (28.4) | 42 (28.6) | 66 (45.5) |
| Recruitment site [n (%)] | ||||
| Arizona | 181 (18.6) | 63 (19.2) | 52 (18.5) | 66 (18.1) |
| Houston | 301 (30.9) | 127 (38.7) | 95 (33.8) | 79 (21.6) |
| Universidad de Sonora | 137 (14.1) | 42 (12.8) | 34 (12.1) | 61 (16.7) |
| Instituto Tecnológico de Sonora | 183 (18.8) | 44 (13.4) | 56 (19.9) | 83 (22.7) |
| Universidad de Guadalajara | 172 (17.7) | 52 (15.9) | 44 (15.7) | 76 (20.8) |
a
U.S. participants only