Table 1.

Results of the regression coefficients between systolic blood pressure and environmental risk factors in the sample with and without cryptic relatedness (CR): sample size 1039, ratio of CR to the population 20.2%, population prevalence 25%, heritability for liability 14.3%, prevalence in the subpopulation without CR 26%, prevalence in CR 26%

	Estimated	Standard error	t-value	Pr(>|t|)
Intercept
Sample with CR1	82.52	5.15	16.03	<2e−16
Sample without CR2	77.11	5.49	14.06	<2e−16
BMI
Sample with CR	1.31	0.14	9.30	<2e−16
Sample without CR	1.36	0.16	8.34	3.23e−16
Alcohol consumption
Sample with CR	−0.80	1.51	−0.53	0.60
Sample without CR	−0.42	1.61	−0.26	0.79
Smoking status
Sample with CR	−0.66	0.71	−0.93	0.35
Sample without CR	−0.02	1.05	−0.02	0.98
Age
Sample with CR	0.38	0.07	5.43	6.86e−08
Sample without CR	0.41	0.05	7.99	4.62e−15
Gender
Sample with CR	−3.09	1.04	−2.97	0.003
Sample without CR	−2.46	1.01	−2.44	0.01

¹Size of sample with CR was 1039 subjects. From the sampling data with CR, equation (1) in Results were found. Adjusted R-squared = 0.14.

²Size of sample without CR was 829 subjects. From the sampling data without CR, equation (2) in Results were found. Adjusted R-squared = 0.15.