. Author manuscript; available in PMC: 2011 May 1.

Published in final edited form as: Cancer Causes Control. 2010 Jan 19;21(5):719–727. doi: 10.1007/s10552-009-9500-2

Table 4.

Percent change for hormone concentrations per unit increase in the independent variables (p values) from multivariate linear regression models with adjustments for maternal age, parity, weight, height, and smoking at enrollment in 338 uncomplicated pregnancies from the Northern Sweden Maternity Cohort, 1975–2001^*

Independent variable	Dependent variable (hormones)

	IGF-I	IGF-II	AFP	hCG
Maternal age (years)	−0.014 (0.01)	−0.017 (<0.0001)
Multiparous vs. primiparous	0.108 (0.04)			−0.150 (0.05)
Maternal weight (kg)				−0.010 (0.01)
Maternal smoking (yes vs. no)				−0.166 (0.03)

for IGF-I, IGF-II, and AFP, models were adjusted for a linear term of gestational day; for hCG, models were adjusted for a cubic term of gestational day.