Table 3.

Logistic regression analysis of upper gastrointestinal neoplasm detection risk factors

Variables			Univariate			Multivariate
			OR	95% CI	p value	OR	95% CI	p value
Age			1.03	1.01 − 1.05	< 0.001	1.03	1.01 − 1.05	0.002
Male			2.0	1.2 − 3.4	0.005	2.0	1.2 − 3.5	0.011
HD-endoscope			0.95	0.6 − 1.6	0.858
Sedation			0.8	0.4 − 1.3	0.326
Out-patient			0.4	0.2 − 0.7	< 0.001	0.7	0.4 − 1.2	0.207
CDR > 26%			4.6	2.8 − 8	< 0.001	5.7	1.5 − 22.3	0.012
Endoscopic center*		B	Reference			0.8	0.3 − 2.0	0.666
		C	1.4	0.6 − 3.1	0.430
		A	4.0	2.0 − 8.1	< 0.001

HD high definition, CDR > 26% – examination performed by operator with CDR higher that 26% (group 4), OR – odds ratio, CI – confidence interval

*In the univariate analysis center with lowest mean UGN value (center B) was the reference. In the multivariate analysis the centers were graded according to mean UGN value – center B as 1, center C as 2 and center A as 3