Table 1 Weight at the three assessment times for fresh ART, frozen ART (FET) and naturally conceived (NC) singleton babies
Adjusted BW (GROW) N = 26,010 | Weight at 6/8 weeks N = 19,028 | Weight at school entry N = 11,573 | ||||
|---|---|---|---|---|---|---|
Effect size (95% CI) (g) | P | Effect size (95% CI) (g) | P | Effect size (95% CI) (g) | P | |
Type of conception | ||||||
Naturally Conceived | Reference | < 0.001 | Reference | < 0.001 | Reference | 0.340 |
ART - Fresh Cycle | -93.7 (-110.6, -76.6) | -171 (-200, -143) | -58 (-231, 115) | |||
ART - Frozen Cycle | 57.5 (30.7, 86.5) | 1 (-47, 49) | 200 (-135, 560) | |||
Scottish Deprivation Index Quintile | ||||||
1 (most deprived) | -44.6 (-64.2, -25.7) | < 0.001 | -48 (-80, -17) | 0.052 | 38 (-168, 240) | 0.131 |
2 | -25.1 (-44.1, -6.4) | -25 (-57, 4) | 229 (42, 430) | |||
3 | -6.8 (-24.3, 10.3) | -32 (-61, 0) | 104 (-74, 294) | |||
4 | 3.8 (-13.8, 22.0) | -15 (-48, 13) | 29 (-150, 201) | |||
5 (least deprived) | Reference | Reference | Reference | |||
Smoked during pregnancy | -211.1 (-227.6, -195.2) | < 0.001 | -190 (-216, -163) | < 0.001 | -40 (-194, 136) | 0.638 |
Maternal age (linear) | 41.3 (30.1, 52.2) | < 0.001 | -7 (-25, 12) | < 0.001 | 118 (3, 240) | 0.011 |
Maternal age (quadratic) | -20.8 (-35.6, -8.1) | -52 (-75, -29) | -121 (-266, 17) | |||
Type of feeding | ||||||
Breast only | Reference | < 0.001 | Reference | 0.125 | ||
Bottle only | 77 (54, 98) | 99 (-31, 229) | ||||
Breast and bottle | -9 (-52, 30) | 229 (-25, 501 | ||||