Birth/6–8 weeks | 6–8 weeks/school entry | |||
---|---|---|---|---|
Coefficient (95% CI) | P | Coefficient (95% CI) | P | |
Constant (growth rate for a NC baby with ‘Reference’ characteristics) | 254.8 (250.5, 259.1) | 54.4 (53.9, 54.9) | ||
Type of conception | ||||
Naturally conceived | Reference | 0.023 | Reference | 0.363 |
ART—fresh cycles | 7.2 (2.1, 12.7) | 0.25 (-0.34, 0.88) | ||
ART—frozen cycles | 4.9 (-3.5, 13.9) | 0.74 (-0.39, 1.90) | ||
Gender | ||||
Male | Reference | < 0.001 | Reference | 0.025 |
Female | -46.2 (-49.4, -42.9) | 0.48 (0.06, 0.89) | ||
IMD Quintile | ||||
1 (most deprived) | 8.2 (3.1, 13.3) | 0.026 | 0.46 (-0.23, 1.20) | 0.102 |
2 | 6.7 (1.4, 11.9) | 0.90 (0.23, 1.58) | ||
3 | 6.8 (1.5, 12.4) | 0.52 (-0.10, 1.20) | ||
4 | 5.4 (-0.1, 10.9) | 0.21 (-0.41, 0.80) | ||
5 (least deprived) | Reference | Reference | ||
Smoked during pregnancy | ||||
No | Reference | < 0.001 | Reference | 0.241 |
Yes | 19.6 (14.9, 24.5) | 0.36 (-0.22, 0.95) | ||
Maternal age | ||||
(Linear term) | 2.9 (-0.2, 6.4) | 0.076 | 0.42 (0.01, 0.84) | 0.032 |
(Quadratic term) | -2.4 (-6.7, 1.8) | -0.29 (-0.76, 0.19) | ||
Feed type at 10 days | ||||
Breast | Reference | < 0.001 | Reference | 0.236 |
Bottle | 22.8 (18.7, 26.5) | 0.12 (-0.35, 0.57) | ||
Breast and bottle | 11.7 (4.6, 18.4) | 0.78 (-0.10, 1.66) |