Table 5.

Results of the regression coefficients between systolic blood pressure and environmental risk factors in the sample with and without cryptic relatedness (CR): sample size 500, ratio of CR to the population 42%, population prevalence 50%, heritability for liability 31.7%, prevalence in the subpopulation without CR 67.2%, prevalence in CR 26%

	Estimated	Standard error	t-value	Pr(>|t|)
Intercept
Sample with CR1	130.15	5.51	23.62	<2e−16
Sample without CR2	128.16	3.92	32.73	<2e−16
BMI
Sample with CR	0.17	0.15	1.13	0.26
Sample without CR	0.22	0.10	2.13	0.03
Alcohol consumption
Sample with CR	−16.61	1.67	−9.95	<2e−16
Sample without CR	−8.11	1.24	−6.53	2.99e−10
Smoking status
Sample with CR	2.58	0.71	3.63	0.0003
Sample without CR	−2.87	0.65	−4.40	1.53e−05
Age
Sample with CR	0.39	0.08	4.91	1.21e−06
Sample without CR	0.42	0.05	7.72	1.99e−13
Gender
Sample with CR	−1.44	1.09	−1.33	0.19
Sample without CR	−1.29	0.72	−1.79	0.08

¹Size of sample with CR was 500 subjects. From the sampling data with CR, equation (9) in Results were found. Adjusted R-squared = 0.21.

²Size of sample without CR was 290 subjects. From the sampling data without CR, equation (10) in Results were found. Adjusted R-squared = 0.24.