Table 1 Sample description
Variable | Category | Women born before 1950 | Women born after 1950 | p-value |
|---|---|---|---|---|
(n = 1031) | (n = 1007) | |||
Age, mean (sd) | 70.5 (6.6) | 47.9 (7.3) | < 0.001 | |
Age, median (interquartile range) | 70 (65–76) | 49 (43–54) | ||
Geographical area, n (%) | Madrid | 163 (15.8) | 217 (21.5) | < 0.001 |
Barcelona | 251 (24.3) | 152 (15.1) | ||
Navarra | 105 (10.2) | 80 (7.9) | ||
Guipuzcoa | 123 (11.9) | 142 (14.1) | ||
Leon | 106 (10.3) | 99 (9.8) | ||
Asturias | 59 (5.7) | 68 (6.8) | ||
Murcia | 8 (0.8) | 4 (0.4) | ||
Huelva | 33 (3.2) | 46 (4.6) | ||
Cantabria | 75 (7.3) | 113 (11.2) | ||
Valencia | 34 (3.3) | 35 (3.5) | ||
Granada | 45 (4.4) | 22 (2.2) | ||
Gerona | 29 (2.8) | 29 (2.9) | ||
Parent’s SE level | Low | 399 (38.7) | 277 (27.5) | < 0.001 |
Middle | 521 (50.5) | 674 (66.9) | ||
High | 53 (5.1) | 40 (4.0) | ||
NA | 58 (5.6) | 16 (1.6) | ||
Education level | unfinished primary | 334 (32.4) | 40 (4.0) | < 0.001 |
primary studies | 389 (37.7) | 232 (23.0) | ||
secondary studies | 199 (19.3) | 420 (41.7) | ||
high education | 109 (10.6) | 315 (31.3) | ||
Occupation level | Low | 153 (14.8) | 112 (11.1) | < 0.001 |
middle | 368 (35.7) | 323 (32.1) | ||
high | 230 (22.3) | 484 (48.1) | ||
NA | 280 (27.2) | 88 (8.7) | ||
Urban Vulnerability | Q1 (lower vulnerability) | 197 (19.1) | 202 (20.1) | < 0.001 |
Q2 | 169 (16.4) | 129 (12.8) | ||
Q3 | 173 (16.8) | 184 (18.3) | ||
Q4 | 156 (15.1) | 137 (13.6) | ||
Q5(higher vulnerability) | 191 (18.5) | 137 (13.6) | ||
NA | 145 (14.1) | 218 (21.6) | ||
Age at menarche | ≤12 years | 481 (48.2) | 361 (35.6) | < 0.001 |
> 12 years | 517 (51.8) | 653 (64.4) | ||
Age at first delivery | < 20 years | 53 (6.9) | 26 (3.0) | < 0.001 |
20–24 years | 219 (28.4) | 288 (33.0) | ||
25–29 years | 270 (35.0) | 393 (45.0) | ||
30–34 years | 160 (20.7) | 127 (14.5) | ||
≥35 years | 70 (9.1) | 39 (4.5) | ||
Abortion | No | 799 (77.5) | 779 (77.4) | 0.94 |
Yes | 232 (22.5) | 228 (22.6) | ||
Dead newborn | No | 998 (96.8) | 995 (98.8) | 0.002 |
yes | 33 (3.2) | 12 (1.2) | ||
Number of alive newborns, mean (sd) | 1.5 (1.1) | 2.4 (1.7) | < 0.001 | |
Preterm newborn | No | 942 (91.4) | 909 (90.3) | 0.39 |
Yes | 89 (8.6) | 98 (9.7) | ||
Post-term newborn | No | 989 (95.9) | 964 (95.7) | 0.825 |
Yes | 42 (4.1) | 43 (4.3) | ||
Number of deliveries | nulliparous | 142 (13.81) | 227 (22.72) | < 0.001 |
1–2 | 469 (45.62) | 633 (63.36) | ||
≥3 | 417 (40.56) | 139 (13.91) | ||
Months of breastfeeding, mean (sd) | 12.9 (31.5) | 7.5 (16.3) | < 0.001 | |
Menopausal status | Postmenopausal | 1029 (99.8) | 443 (44.0) | < 0.001 |
Premenopausal | 2 (0.2) | 564 (56.0) | ||
Age at menopause | < 50 years | 234 (59.2) | 409 (45.7) | < 0.001 |
≥50 years | 161 (40.8) | 485 (54.3) | ||
Use of hormonal contraceptives | No | 720 (70.7) | 327 (32.8) | < 0.001 |
yes | 298 (29.3) | 671 (67.2) | ||
Use of hormone replacement therapy | No | 858 (89.7) | 942 (95.6) | < 0.001 |
Yes | 99 (10.3) | 43 (4.4) | ||
Fertility problems | No | 970 (95.4) | 915 (92.0) | 0.002 |
Yes | 47 (4.6) | 80 (8.0) | ||
Treatment for fertility | No | 23 (48.9) | 26 (32.5) | 0.066 |
Yes | 24 (51.1) | 54 (67.5) | ||
Body Mass Index (kg/m2) | < 18.5 | 28 (2.9) | 11 (1.2) | < 0.001 |
18.5–24 | 561 (58.1) | 340 (37.4) | ||
25.0–29.9 | 256 (26.5) | 350 (38.5) | ||
> = 30 | 121 (12.5) | 208 (22.9) | ||
Energy intake (kcal/day), mean (sd) | 1686.0 (523.5) | 1841.7 (611.6) | < 0.001 | |
Ethanol intake (g/day), mean (sd) | 57.7 (109.0) | 78.2 (127.4) | < 0.001 | |
Tobacco use | Non-smoker | 805 (78.3) | 431 (43.0) | < 0.001 |
former smoker | 138 (13.4) | 243 (24.3) | ||
current somoker | 85 (8.3) | 328 (32.7) | ||