Table 5.

Comparison of model coefficients between US and UK data.

Model		USa			UKb			Comparison
		Beta	SE	P-Value	Beta	SE	P-Value	Z	P-Value
Current Smoking
Cumulative exposure only		0.164	0.064	0.010	0.346	0.119	0.004	−1.347	0.178
Persistent poverty only		0.336	0.131	0.010	0.787	0.259	0.002	−1.554	0.120
Early Life Sensitive Period	Cumulative exposure	0.127	0.049	0.009	0.391	0.158	0.013	−1.596	0.110
	Early life poverty	0.127	0.049	0.009	−0.152	0.367	0.679	0.754	0.451
Health Limitations
Cumulative exposure only		0.258	0.104	0.014	0.378	0.126	0.003	−0.734	0.462
Persistent poverty only		0.684	0.217	0.002	0.657	0.281	0.019	0.076	0.939

^aAdjusted for gender, race, family structure at birth, year of birth, mother's education, maternal smoking prior to pregnancy, maternal mental health at birth, and whether mother was US or foreign born.

^bAdjusted for gender, mother's ethnicity, family structure at birth, year of birth, mother's age at birth, mother's education, maternal smoking and maternal mental health at age 0.