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/m2 |
80.3 |
|
79.5 |
| BMI ≥ 25 kg/m2 |
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 |