Table 2.

Regression results for cross-sectional analysis of fetal measurements, controlling for sex, maternal smoking during pregnancy, gestational weight gain and maternal BMI. Beta values represent change in fetal measure per risk allele, p values are uncorrected.

Variable	FTO rs9939609			FTO rs1421085			MC4R rs17782313
beta	se	p value	beta	se	p value	beta	se	p value
11 week scan: Royston CRL z-score	-0.066	0.04	0.099	-0.081	0.039	0.04	0.088	0.046	0.056
11 week scan: Royston BPD z-score	-0.074	0.043	0.083	-0.076	0.042	0.073	-0.026	0.049	0.592
19 week scan: Royston BPD z-score	-0.023	0.032	0.472	-0.033	0.032	0.299	0.025	0.038	0.509
34 week scan: Royston BPD z-score	0.034	0.035	0.33	0.022	0.034	0.526	0.05	0.04	0.211
11 week scan: Royston HC z-score	-0.11	0.042	0.013	-0.1	0.042	0.016	-0.061	0.049	0.22
19 week scan: Royston HC z-score	-0.031	0.032	0.332	-0.035	0.031	0.266	0.03	0.037	0.41
34 week scan: Royston HC z-score	-0.011	0.034	0.74	-0.016	0.034	0.644	0.059	0.04	0.136
11 week scan: Royston AC z-score	-0.071	0.047	0.128	-0.083	0.047	0.076	-0.048	0.053	0.373
19 week scan: Royston AC z-score	-0.027	0.032	0.396	-0.03	0.031	0.332	0.047	0.036	0.201
34 week scan: Royston AC z-score	-0.022	0.033	0.51	-0.025	0.033	0.446	0.054	0.039	0.16
Birth weight z-score (also controlling for GA)	0.004	0.03	0.888	0.012	0.03	0.678	0.052	0.035	0.142