Table 1.
Characteristics for the study population at each clinical visit.
| Population characteristics | Birth | 13 months | 2 years | 3 years | 5 years |
|---|---|---|---|---|---|
| Anthropometry, Mean (SD) | |||||
| N (%) | 507 (100) | 504 (99) | 448 (88) | 405 (80) | 391 (77) |
| Missing (%) | 0 | 3 (1) | 59 (12) | 102 (20) | 116 (23) |
| Weight (kg) | 3.490 (0.506) | 10.352 (1.108) | 12.941 (1.351) | 15.260 (1.613) | 19.987 (2.521) |
| Weight (z-score) | 0.18 (0.889) | −0.19 (1.197) | 0.08 (0.964) | 0.09 (0.938) | 0.22 (0.901) |
| BMI (kg/m2) | NA | NA | 16.5 (1.2) | 16.2 (1.1) | 16.0 (1.3) |
| BMI (z-score) | NA | NA | 0.04 (1.048) | 0.21 (0.958) | 0.08 (0.897) |
| Weight gain (kg) | NA | 6.86 (1.05) | 9.44 (1.31) | 11.76 (1.52) | 16.49 (2.43) |
| Infant sex, N (%) | |||||
| Male | 273 (54) | 270 (54) | 245 (55) | 219 (54) | 212 (54) |
| Female | 234 (46) | 234 (46) | 203 (45) | 186 (46) | 179 (46) |
| Maternal pre-pregnancy BMI, N (%) | |||||
| Underweight | 20 (4) | 19 (4) | 20 (4) | 19 (5) | 16 (4) |
| Normal weight | 343 (68) | 343 (68) | 302 (67) | 281 (69) | 277 (71) |
| Overweight | 91 (18) | 91 (18) | 85 (19) | 70 (17) | 63 (16) |
| Obese | 51 (10) | 51 (10) | 41 (9) | 35 (9) | 35 (9) |