Table 1 General characteristics, growth and nutritional outcomes of 7270 healthy singleton term infants in China
|  | 0–5 months | 6–12 months |
|---|---|---|
N | 4066 | 3204 |
Gender (boy) | 2158 (53.1%) | 1664 (51.9%) |
Ethnicity (Han) | 4043 (99.4%) | 3197 (99.8%) |
Age at visit (month) | 2.63 (1.59) | 8.96 (2.42) |
Gestational age (GA, week) | 39.03 (1.09) | 39.11 (1.11) |
Categorized by GA | Â | Â |
 Early-term (GA, 37–38 wks) | 1304 (32.1%) | 957 (29.9%) |
 Full-term (GA, 39–41 wks) | 2762 (67.9%) | 2247 (70.1%) |
Birth weight (kg) | 3.33 (0.42) | 3.34 (0.42) |
 Low birth weight (< 2.5 kg) | 79 (1.9%) | 49 (1.5%) |
 Normal birth weight (2.5–4.0 kg) | 3798 (93.4%) | 2987 (93.2%) |
 Macrosomia (> 4.0 kg) | 189 (4.6%) | 168 (5.2%) |
Feeding patterns within 6 months※ |  |  |
 Exclusive breastfeeding | 2699 (66.4%) | 2125 (66.3%) |
 Mixed feeding | 1182 (29.1%) | 869 (27.1%) |
 Exclusive formula feeding | 185 (4.5%) | 210 (6.6%) |
Timing of complementary food introduction | Â | Â |
 Not yet | 3935 (96.8%) | - |
 4–5 months | 131 (3.2%) | 577 (18.0%) |
 ≥ 6 months | - | 2627 (82.0%) |
Gestational diabetes mellitus | 522 (12.8%) | 235 (7.3%) |
Gestational hypertension | 112 (2.8%) | 87 (2.7%) |
Father height (cm) | 175.20 (5.11) | 175.63 (5.08) |
Mother height (cm) | 162.12 (5.05) | 162.38 (4.95) |
Length (cm) | 59.66 (4.90) | 71.83 (3.92) |
Weight (kg) | 6.06 (1.50) | 9.14 (1.27) |
LAZ | 0.30 (0.95) | 0.42 (1.01) |
WAZ | 0.48 (0.94) | 0.58 (1.03) |
WLZ | 0.43 (1.03) | 0.54 (1.05) |
MSS (LAZ < -2) | 41 (1.0%) | 29 (0.9%) |
MSAM (WLZ < -2) | 42 (1.0%) | 21 (0.7%) |
Overweight and obesity (WLZ > 2) | 283 (7.0%) | 278 (8.7%) |