Table 2. New Logistic regression model and its scoring system.

Variable	β	OR	95% CI	P	Score
Age (year)
40-49		1			0
50-59	0.689	1.99	0.68-5.83	0.208	1
60-69	1.162	3.20	1.16-8.82	0.025	2
>69	1.919	6.81	2.32-20.05	<0.001	3
Gender
Female		1			0
Male	0.899	2.46	1.31-4.62	0.005	2
Coronary heart disease
Yes		1			0
No	1.634	5.13	1.50-17.51	0.009	3
Egg intake
Frequently		1			0
Occasionally	0.549	1.73	0.94-3.20	0.080	1
Defecation frequency
Once or more everyday		1			0
Once every 2 or more days	0.744	2.11	1.11-3.99	0.022	1

95% CI, 95% confidence interval.