Table 1.
Characteristics of the study population
| Total group N = 4328 | |
|---|---|
| Maternal characteristics | |
| Age at intake (years), mean (SD) | 30.7 (5.1) |
| Height (cm), mean (SD) | 167.7 (7.5) |
| Pre-pregnancy weight (kg), median (95% range) | 64.0 (49.0, 98.0) |
| Pre-pregnancy BMI (kg/m2), median (95% range) | 22.7 (18.1, 34.5) |
| Highest education completed, n (%) | |
| Primary | 343 (8.7) |
| Secondary | 1692 (43.1) |
| Higher | 1887 (48.1) |
| Parity, nulliparous (%) | 2299 (55.1) |
| Ethnicity, European (%) | 2605 (61.9) |
| Folic acid use, yes (%) | 2239 (75.3) |
| Smoking during pregnancy, yes (%) | 601 (16.0) |
| Gestational diabetes, yes (%) | 42 (1.0) |
| Pre-eclampsia, yes (%) | 65 (1.8) |
| Gestational hypertension, yes (%) | 155 (4.2) |
| Child characteristics | |
| Sex, male (%) | 2235 (51.6) |
| Gestational age at birth (weeks), median (95% range) | 40.1 (35.8, 42.3) |
| Birthweight (g), median (95% range) | 3450 (2261, 4474) |
| Ever breastfed, yes (%) | 3150 (92.5) |
| Introduction of solid foods before 6 months, yes (%) | 2328 (89.9) |
| Ethnicity, European (%) | 2730 (64.8) |
| Television watching >2 h/day, n (%) | 672 (19.9) |
| Age at 6-year follow-up examination (years), median (95% range) | 6.0 (5.7, 8.0) |
| BMI (kg/m2), median (95% range) | 15.9 (13.7, 21.2) |
| Insulin at 6 years (pmol/l), median (95% range) | 112 (17, 395) |
| C-peptide at 6 years (nmol/l), median (95% range) | 0.95 (0.30, 2.14) |