The effectiveness of walking exercise on the bowel preparation before colonoscopy: a single blind randomized clinical trial study

Table 4 Multivariate logistic regression analysis of predicting factors affecting total BBPS higher than 5, right colon BBPS higher than 2, left colon BBPS higher than 2

Variable	Univariate Analysis^* of total BBPS higher than 5			Univariate Analysis^* of BBPS higher than 2 in right colon			Univariate Analysis^* of BBPS higher than 2 in left colon
Variable	OR^‡	95% CI	P	OR^‡	95% CI	P	OR^‡	95% CI	P
Age, year < 50 ≥ 50 (Reference group)	2.50	(1.30–4.70)	0.005	3.98	(1.57–10.10)	0.004	2.39	(1.02–5.56)	0.043
Smoking Yes No (Reference group)	0.38	(0.16–0.93)	0.034	0.35	(0.12–1.02)	0.055	0.15	(0.06–0.38)	< 0.001

^*P value based on the χ2 test; ^**P value based on logistic regression, ^‡ Odds Ratio

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