Supplementary Table 3.

Results of subgroup analyses after stratification for age, sex, medication of antiplatelet drug, and medication of lipid-lowering drug.

Subgroup	No (%) of CHD patients	OR (95% CI)	p value for interaction
All parents	49 (41.9%)	1.11 (1.01–1.22)
Age			0.24
<60	26 (48.1%)	1.17 (1.03–1.34)
≥60	23 (36.5%)	1.04 (0.91–1.20)
Sex			0.19
Male	36 (41.3%)	1.17 (1.04–1.32)
Female	13 (43.3%)	1.01 (0.84–1.22)
Antiplatelet drug			0.19
Yes	19 (55.9%)	1.28 (1.06–1.62)
No	30 (36.1%)	1.09 (0.98–1.23)
Lipid-lowering drug			0.50
Yes	25 (49.0%)	1.08 (0.96–1.24)
No	24 (36.4%)	1.15 (1.02–1.33)

CI – confidence interval; CHD – coronary heart disease; OR – odds ratio.