Evaluation of an educational telephone intervention strategy to improve non-screening colonoscopy attendance: A randomized controlled trial

Table 3 Multivariable analysis of risk factors for non-attendance

	ITT			PP
	OR	95%CI	P value	OR	95%CI	P value
Demographic risk factors
Group
Intervention	1			1
Control	1.81	1.27-2.58	0.001	3.56	2.25-5.64	< 0.001
Age	0.98	0.97-0.99	< 0.001	0.97	0.96-0.98	< 0.001
Nationality
Spanish	1
Foreign	2.69	1.77-4.10	< 0.001	2.49	1.55-4.00	< 0.001
Studies level
Non-advanced	1			1
Advanced	0.47	0.27-0.83	0.010	0.51	0.27-0.94	0.031
Clinical risk factors
BMI	1.05	1.01-1.08	0.012	1.04	1.01-1.09	0.027
Anxiety-depression syndrome
No	1			1
Yes	2.00	1.40-2.86	< 0.001	2.02	1.35-3.02	0.001
High comorbidity burden
No	1			1
Yes	2.82	0.86-9.24	0.087	3.87	1.17-12.85	0.027
Disabled condition
No	1			1
Yes	3.39	1.68-6.84	0.001	3.37	1.50-7.58	0.003
Endoscopic risk factors
Previous endoscopy
No	1			1
Yes	0.35	0.22-0.56	< 0.001	0.46	0.28-0.77	0.003
Previous non-attendance
No	1			1
Yes	2.94	1.89-4.58	< 0.001	3.13	1.91-5.13	< 0.001
Previous cleansing problems
No	1			1
Yes	2.58	1.19-5.59	0.016	2.58	1.13-5.85	0.024
Endoscopy timetable
Morning	1			1
Afternoon	1.52	1.03-2.23	0.033	1.62	1.04-2.51	0.031

ITT: Intention-to-treat analysis; PP: Per protocol analysis; BMI: Body mass index; OR: Odds ratio; CI: Confidence interval.