Table 1 Characteristics of the whole study sample and of participants born 1950–1974 and 1975–1999.
All participants | Participants born 1950–1974 | Participants born 1975–1999 | |||||||
|---|---|---|---|---|---|---|---|---|---|
Data usable | Mean(SD) | N(%) | Data usable | Mean(SD) | N(%) | Data usable | Mean(SD) | N(%) | |
Maternal characteristic | |||||||||
Body Mass Index | 68,571 | 24.3(4.1) | 9937 | 23.3(3.5) | 58,634 | 24.5(4.2) | |||
Underweight | 1546(2.3%) | 321(3.2%) | 1225(2.1%) | ||||||
Normal weight | 43,401(63.3%) | 7253(73.0%) | 36,148(61.7%) | ||||||
Overweight | 17,407(25.4%) | 1879(18.9%) | 15,528(26.5%) | ||||||
Moderately obese | 4577(6.7%) | 397(4.0%) | 4180(7.1%) | ||||||
Severely obese | 1640(2.4%) | 87(0.9%) | 1553(2.6%) | ||||||
Weight(kg) | 68,571 | 63.3(11.7) | 9937 | 58.5(9.4) | 58,634 | 64.1(11.8) | |||
Height(cm) | 68,571 | 161.2(6.4) | 9937 | 158.5(5.8) | 58,634 | 161.7(6.3) | |||
Gestational week weight was measured | 65,784 | 15.7 (7.1) | 9935 | (17.1(6.1) | 55,849 | 15.5(7.2) | |||
< 20 | 53,814(81.8%) | 7471(75.2%) | 46,343(83.0%) | ||||||
20–29 | 7894(12.0%) | 2090(21.0%) | 5804(10.4%) | ||||||
30 or over | 4076(6.2%) | 374(3.8%) | 3702(6.6%) | ||||||
Hypertension in pregnancy | 68,571 | 9937 | 58,634 | ||||||
Normotension | 50,255(73.3%) | 7740(77.9%) | 42,515(72.5%) | ||||||
Pre-existing hypertension | 644(0.9%) | 0(NA) | 644(1.1%) | ||||||
Gestational hypertension | 14,623(21.3%) | 1825(18.4%) | 12,798(21.8%) | ||||||
Preeclampsia or eclampsia | 3049(4.4%) | 372(3.7%) | 2677(4.6%) | ||||||
Age at delivery | 68,557 | 26.2(5.2) | |||||||
Smoking | 50,565 | 2735 | 47,830 | ||||||
Never smoked | 29,102(57.6%) | 1472(53.8%) | 27,630(57.8%) | ||||||
Quit smoking | 2640(5.2%) | 0(0.0%) | 2640(5.5%) | ||||||
Smoked throughout pregnancy | 18,823(37.2%) | 1263(46.2%) | 17,560(36.7%) | ||||||
Parity | 68,571 | 9937 | 58,634 | ||||||
Primiparous | 46,657(68.0%) | 5852(58.9%) | 40,805(69.6%) | ||||||
Other | 21,914(32.0%) | 4085(41.1%) | 17,829(30.4%) | ||||||
Register diagnosis of mental disorders | 67,552 | 9149 | 58,403 | ||||||
Yes | 1892(2.8%) | 525(5.7%) | 1367(2.3%) | ||||||
No | 65,660(97.2%) | 8624(94.3%) | 57,036(97.7%) | ||||||
Self-reported mental disorders by delivery | 57,872 | 0 | 57,872 | ||||||
Yes | 2753(4.8%) | 0 | 2753(4.8%) | ||||||
No | 55,119(95.2%) | 0 | 55,119(95.2%) | ||||||
Family characteristics | |||||||||
Social deprivation: spouse’s occupation | 49,311 | 8941 | 40,370 | ||||||
Non manual | 18,578(37.7%) | 2013(22.5%) | 16,565(41.0%) | ||||||
Manual | 30,733(62.3%) | 6928(77.5%) | 23,805(59.0%) | ||||||
Child characteristics | |||||||||
Sex | 68,571 | 9937 | 58,634 | ||||||
Girl | 37,579(54.8%) | 9074(91.3%) | 28,505(48.6%) | ||||||
Boy | 30,992(45.2%) | 863(8.7%) | 30,129(51.4%) | ||||||
Birth year | 68,571 | 1984.1(11.8) | 9937 | 58,634 | |||||
1950–1974 | 9937(15.5%) | 9937(100%) | |||||||
1975–1999 | 58,634(85.5%) | 58,634(100%) | |||||||
Any mental disorder | |||||||||
Yes | 68,571 | 1103(1.6%) | 9937 | 277(2.8%) | 58,634 | 826(1.4%) | |||
No | 67,468(98.4%) | 9660(97.2%) | 57,808(98.6%) | ||||||
