Variable | All | Boys | Girls |
Mean ± SD | |||
BMI at birth | |||
BMI | 12.63 ± 1.25 | 12.62 ± 1.22 | 12.66 ± 1.29 |
BMI at 3 years old | |||
BMI | 15.69 ± 1.15 | 15.78 ± 1.18 | 15.60 ± 1.11 |
BMI z-score* | 0.10 ± 0.87 | 0.10 ± 0.91 | 0.11 ± 0.82 |
Level 2: Individual: n = 899 | |||
Year of birth | |||
2006 | 68 (7.6%) | 38 (8.2%) | 30 (6.9%) |
2007 | 292 (32.5%) | 154 (33.1%) | 138 (31.9%) |
2008 | 317 (35.3%) | 149 (32.0%) | 168 (38.8%) |
2009 | 222 (24.7%) | 125 (26.8%) | 97 (22.4%) |
Sex | |||
Male | 466(51.8%) | ||
Female | 433(48.2%) | ||
Maternal pre-pregnancy BMI | |||
20.83 ± 3.22 | 20.78 ± 3.16 | 20.89 ± 3.29 | |
Gestational age | |||
Full term | 786(94.2%) | 406 (92.9%) | 380 (95.7%) |
Pre-term | 41(4.9%) | 29 (6.6%) | 12 (3.0%) |
Post term | 7(0.8%) | 2 (0.5%) | 5 (1.3%) |
Mother employed | |||
No | 315 (43.6%) | 165 (43.0%) | 150 (44.3%) |
Yes | 402 (55.6%) | 216 (56.3%) | 186 (54.9%) |
Other | 6 (0.8%) | 3 (0.8%) | 3 (0.9%) |
Birth weight | 3.05 ± 0.44 | 3.06 ± 0.45 | 3.04 ± 0.43 |
Low birth weight | 73 (9.0%) | 38 (8.4%) | 35 (8.5%) |
Parity | |||
First child | 288 (40.3%) | 149 (39.4%) | 139 (41.3%) |
Others | 427 (59.7%) | 229 (60.6%) | 198 (58.7%) |
Twin | |||
Yes | 14(7 pairs) (1.6%) | 12 (6 pairs) (2.6%) | 2 (1 pair) (0.5%) |
Family Structures | |||
Nuclear family | 471 (67.4%) | 254 (68.1%) | 217 (66.6%) |
Extended family | 212 (30.3%) | 116 (31.1%) | 96 (29.5%) |
Single parent family | 16 (2.3%) | 3 (0.8%) | 13 (4.0%) |
Maternal smoking | |||
Yes | 39 (5.6%) | 20 (5.4%) | 19 (5.7%) |
Enrolment in a nursery at 4 months of age | |||
Yes | 29 (4.0%) | 14 (3.7%) | 15 (4.4%) |
Feeding behaviour until 4 months | |||
Breast milk | 327 (45.0%) | 167 (43.6%) | 160 (46.5%) |
Formula | 109 (15.0%) | 52 (13.6%) | 57 (16.6%) |
Both | 291 (40.0%) | 164 (42.8%) | 127 (36.9%) |