. 2013 Sep 4;8(9):e72824. doi: 10.1371/journal.pone.0072824

Table 3. Univariate ^a Predictors of Cord and Three Year DNA Methylation (continuous).

		Cord DNA Methylation (ng/100ng total DNA)				Cord DNA Methylation (subset)^b (ng/100ng total DNA)			Three Yr DNA Methylation (ng/100ng total DNA)
	N	Statistical estimate		p- value	N	Statistical estimate		p-value	Statistical estimate	p-value
Maternal Ht	277	beta	−0.003	0.889	165	beta	0.020	0.487	−0.035	0.194
		rho	−0.018	0.770		rho	0.045	0.570	−0.066	0.400
Pre-preg. Wt.	270	beta	−0.004	0.018	159	beta	−0.005	0.055	−0.009	0.000
		rho	−0.125	0.040		rho	−0.199	0.012	−0.315	0.000
Pre-preg. BMI	269	beta	−0.023	0.029	159	beta	−0.033	0.027	−0.049	0.000
		rho	−0.124	0.043		rho	−0.234	0.003	−0.293	0.000
Weight gain	252	beta	0.003	0.433	152	beta	0.007	0.265	0.000	0.986
		rho	0.050	0.434		rho	0.037	0.651	−0.086	0.293
Maternal age	279	beta	−0.005	0.743	165	beta	−0.023	0.229	−0.038	0.040
		rho	−0.040	0.502		rho	−0.184	0.018	−0.176	0.023
Total PAH	268	beta	0.076	0.361	159	beta	0.080	0.524	−0.067	0.576
		rho	−0.03	0.66		rho	0.076	0.344	−0.095	0.235

Univariate^a Continuous Predictors of Log-transformed Cord and Three Year DNA Methylation, Beta and Correlation Coefficients.

Regression analyses corrected for inter-plate variation.

The ‘subset’ includes children who have contributed both cord and three year DNA samples.

Abbreviations: Yr (year); Ht (height); Wt (weight); BMI (Body Mass Index); PAH (Polycyclic Aromatic Hydrocarbons).

Table 3. Univariate a Predictors of Cord and Three Year DNA Methylation (continuous).