Risk factors for proton pump inhibitor refractoriness in Chinese patients with non-erosive reflux disease

Table 3 Multivariate logistic regression of patient characteristics (n = 256)

Variables	β	SE	Z	P value	B	OR	95%CI
Women	-0.14	0.10	6.25	< 0.001	-0.19	0.66	0.31-0.89
BMI < 23	0.09	0.03	14.12	< 0.001	0.32	1.56	1.37-2.81
Comorbid IBS	0.21	0.06	12.30	< 0.006	0.37	1.33	1.26-2.55
SDS score	0.46	0.29	5.95	< 0.026	0.53	1.56	1.13-2.39
SAS score	1.05	0.32	9.26	< 0.001	0.85	2.17	1.57-2.76

BMI: Body mass index; IBS: Irritable bowel syndrome; SDS: Self-rating depression scale; SAS: Self-rating anxiety scale.