. 2023 Oct 9;23:351. doi: 10.1186/s12876-023-02987-x

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
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

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

OR^‡

95% CI

OR^‡

95% CI

OR^‡

95% CI

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