Table 3. Examination of the combined effects of all possible factors thought to be effective on inaccessibility to the cecum – results of multivariate logistic regression analysis.

Group 1: One operator sitting (1op-sit), Group 2: One operator standing (1op-sta), Group 3: Two operators standing (2op-sta). The R square value of the model was relatively low and was obtained as 9.7%.

	Odds ratio	95% Confidence interval	Wald	p-value
Age	0.999	0.967–1.031	0.007	0.935
Female sex	1.006	0.423–2.396	0.000	0.989
Additional features	7.910	2.426–25.786	11.764	<0.001
Group 1	1.002	0.321–3.125	0.000	0.997
Group 3	2.338	0.751–7.279	2.149	0.143