Initial Effects of Electroacupuncture for Chronic Severe Functional Constipation and the Potential Underlying Factors: Secondary Analysis of a Randomized Controlled Trial

Table 4

Backward logistic regression with bootstrap method.

Variables	B	SE	P-value	Odds Ratio (95%CI)
Intercept	-0.980	0.265
Age	-0.017	0.005	0.001	0.983(0.972 to 0.993)
CSBMs	1.535	0.323	<0.001	4.641(4.014 to 5.268)
Treatment assignment	-0.694	0.197	<0.001	0.500(0.113 to 0.886)
CSBMsTreatment assignment	0.961	0.438	0.028	2.615(1.756 to 3.474)

Regression coefficient and corresponding odds ratio after bootstrapping (i.e., adjusted for overfitting).