Table 2.

Results of the regression coefficients between systolic blood pressure and environmental risk factors in the sample with and without cryptic relatedness (CR): sample size 400, ratio of CR to the population 52.5%, population prevalence 40%, heritability for liability 24.2%, prevalence in the subpopulation without CR 55%, prevalence in CR 26%

	Estimated	Standard error	t-value	Pr(>|t|)
Intercept
Sample with CR1	141.04	5.52	25.56	<2e−16
Sample without CR2	145.97	1.67	87.40	<2e−16
BMI
Sample with CR	−0.12	0.15	−0.76	0.45
Sample without CR	0.04	0.05	0.79	0.43
Alcohol consumption
Sample with CR	−6.11	1.81	−3.37	0.0008
Sample without CR	1.28	0.56	2.30	0.022
Smoking status
Sample with CR	5.34	0.71	7.57	2.69e−13
Sample without CR	−0.39	0.25	−1.59	0.11
Age
Sample with CR	−0.040	0.082	−0.48	0.63
Sample without CR	−0.13	0.02	−5.47	1.44e−07
Gender
Sample with CR	−1.24	1.13	−1.10	0.27
Sample without CR	−0.92	0.32	−2.86	0.004

¹Size of sample with CR was 400 subjects. From the sampling data with CR, equation (3) in Results were found. Adjusted R-squared = 0.25.

²Size of sample without CR was 190 subjects. From the sampling data without CR, equation (4) in Results were found. Adjusted R-squared = 0.16.