Table 1 Characteristics of the study population
Baseline population | Baseline population | ||
|---|---|---|---|
Original data | Imputed data | ||
(n = 3 343) | (n = 3 963) | ||
% | % | ||
Gender | |||
Female | 48.3 | 48.2 | |
Male | 51.7 | 51.9 | |
Maternal education level | |||
Low | 22.0 | 23.7 | |
Intermediate | 41.7 | 41.6 | |
High | 36.3 | 34.7 | |
Indoor smoking | |||
Yes | 27.3 | 28.7 | |
No | 72.7 | 71.3 | |
Breastfeeding | |||
Yes | 83.0 | 82.0 | |
No | 17.1 | 18.0 | |
Maternal overweight before pregnancy | |||
BMI < 25 kg/m 2 | 80.3 | 79.5 | |
BMI ≥ 25 kg/m 2 | 19.7 | 20.5 | |
Mean ± SD | N | Mean ± SD | |
Birth weight (grams) | 3 513 ± 541 | 3 343 | 3 507 ± 546 |
Living room temperature (°C) | 3 333 | ||
Heating used | 20.2 ± 1.2 | 3 326 | 20.3 ± 1.3 |
Heating not used | 7 | ||
Bedroom temperature (°C) | 3 240 | ||
Heating used | 17.4 ± 2.5 | 2 193 | 17.4 ± 2.5 |
Heating not used | 1 047 | ||
BMI z-score at 3 months | 0.12 ± 1.05 | 2 837 | 0.11 ± 1.05 |
BMI z-score at 1 year | 0.03 ± 1.01 | 3 129 | 0.04 ± 1.02 |
BMI z-score at 2 years | 0.06 ± 1.07 | 2 991 | 0.04 ± 1.08 |
BMI z-score at 3 years | 0.08 ± 1.06 | 2 727 | 0.08 ± 1.07 |
BMI z-score at 4 years | 0.01 ± 1.03 | 2 428 | 0.02 ± 1.04 |
BMI z-score at 5 years | 0.20 ± 1.10 | 2 191 | 0.21 ± 1.11 |
BMI z-score at 6 years | 0.20 ± 1.04 | 2 325 | 0.21 ± 1.04 |
BMI z-score at 7 years | 0.14 ± 1.05 | 2 411 | 0.14 ± 1.04 |
BMI z-score at 8 years | 0.08 ± 1.03 | 2 367 | 0.07 ± 1.03 |
BMI z-score at 11 years | 0.04 ± 1.05 | 2 125 | 0.01 ± 1.06 |