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 6 Results of univariate and multivariate logistic regression analyses for identification of predictors of ePQ completion in the CD population separately

CD
N total = 378	n	Response (%)	Unadjusted Odds Ratio (95%CI)	Adjusted Odds Ratio (95%CI)	P
Female/male	190/188	154 (81)/144 (77)	1.31 (0.80-2.15)	1.35 (0.79-2.30)	0.270
Age at ePQ completion	196/182	156 (80)/142 (78)	1.10 (0.67-1.80)	1.34 (0.79-2.30)	0.281
>40/ ≤40 yr
Flare/no flare1	34/344	33 (97)/265 (77)	9.84 (1.32-73.1)	10.9 (1.43-82.4)	0.021
Ileo colon/upper	136/20	110 (81)/16 (80)	1.06 (0.33-3.42)	0.91 (0.26-3.19)	0.879
Ileum/upper	54/20	41 (76)/16 (80)	0.79 (0.22-2.78)	0.95 (0.27-3.35)	0.631
Colon/upper	153/20	122 (80)/16 (80)	0.98 (0.31-3.15)	0.71 (0.18-2.77)	0.622
Unknown/upper	15/20	9 (60)/16 (80)	0.38 (0.083-1.69)	0.38 (0.075-1.90)	0.237

¹Flare within 3 mo period previous of the moment of ePQ completion. n: number of patients; CI: confidence interval; Upper: esophagus and/or stomach and/or duodenum and/or jejunum; Unknown: unknown disease location.