Household air pollution, ultrasound measurement, fetal biometric parameters and intrauterine growth restriction

Table 3 Regression of fetal parameters on group random intercept model*

Fetal parameters	Coefficient	95% Confidence Interval	p-value
BPD
Randomization group	− 0.010	− 0.066 to 0.046	0.736
Gestational age (weeks)	0.390	0.375 to 0.405	< 0.001
Gestational age²	− 0.003	− 0.003 to − 0.002	< 0.001
HC
Randomization group	0.008	−0.185 to 0.169	0.926
Gestational age (weeks)	1.504	1.450 to 1.557	< 0.001
Gestational age²	−0.012	−0.013 to − 0.011	< 0.001
FL
Randomization group	−0.013	−0.060 to 0.034	0.586
Gestational age (weeks)	0.313	0.301 to 0.325	< 0.001
Gestational age²	−0.002	−0.002 to − 0.001	< 0.001
AC
Randomization group	0.027	−0.199 to 0.253	0.817
Gestational age (weeks)	0.988	0.933 to 1.044	< 0.001
Gestational age²	0.0002	−0.001 to 0.001	0.747
U-EFW
Randomization group	−5.336	−27.589 to 16.917	0.638
Gestational age (weeks)	−120.744	− 127.529 to −113.959	< 0.001
Gestational age²	4.738	4.610 to 4.866	< 0.001

SE standard error; BPD biparietal diameter; HC head circumference; FL fetal length; AC abdominal circumference; U-EFW ultrasound-estimated fetal weight
*Adjusted for mother’s age, body mass index, marital status, educational level, number of children, history of stillbirth, and history of miscarriage

ISSN: 1476-069X