Internet-based data inclusion in a population-based European collaborative follow-up study of inflammatory bowel disease patients: Description of methods used and analysis of factors influencing response rates

Table 5 Results of univariate and multivariate logistic regression analyses for identification of predictors of ePQ completion in the UC population separately

UC
N total = 776	n	Response (%)	Unadjusted Odds Ratio (95%CI)	Adjusted Odds Ratio (95%CI)	P
Female/male	370/406	280 (76)/308 (76)	0.99 (0.71-1.38)	1.01 (0.72-1.42)	0.956
Age at ePQ completion	520/256	409 (78)/179 (70)	1.59 (1.13-2. 23)	1.70 (1.19-2.41)	0.003
>40/ ≤40 yr
Flare/no flare1	55/721	48 (87)/540 (75)	2.30 (1.02-5.17)	2.35 (1.03-5.37)	0.043
Left sided/rectum	333/221	252 (76)/169 (77)	0.96 (0.64-1.43)	0.99 (0.65-1.51)	0.965
Pancolitis/rectum	185/221	140 (76)/169 (77)	0.96 (0.61-1.51)	1.04 (0.65- 1.67)	0.875
Unknown/rectum	37/221	27 (73)/169 (77)	0.83 (0.38-1.83)	0.71 (0.31-1.64)	0.426

¹Flare within 3 mo period previous of the moment of ePQ completion. N: number of patients; CI: confidence interval; Left sided: rectum and sigmoid and/or descending colon; Unknown: unknown disease location.