. Author manuscript; available in PMC: 2017 May 30.

Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2008 Oct;17(10):2729–2736. doi: 10.1158/1055-9965.EPI-08-0379

Table 4.

Description of successive models for slope, n=122

		Statistical significance (p-value) of successive terms in model for slope		Spearman correlation for observed and predicted follow-up concentration
Model^a	Predictors	DDE	PCB	DDE	PCB
I	Intercept	n/a	n/a	0.72	0.43

II	Log of initial concentration (ug/L)	0.75	<0.01	0.73	0.46
III	Weeks of lactation	0.05	<0.01	0.75	0.67
IV	Baseline BMI	<0.01	0.01	0.82	0.72
V	Percent change in body fat	0.07	0.01	0.83	0.75

Each model includes all variables from the preceding model