Effectiveness of very low-volume preparation for colonoscopy: A prospective, multicenter observational study

Table 2 Logistics multiple regression model estimates for overall cleansing success

Predictors	Odds ratios	95%CI	P value
Female gender	1.00	0.75-1.34	0.975
Age, yr	0.99	0.98-1.00	0.024
BMI	0.98	0.95-1.01	0.217
Diabetes (absence)	1.55	1.01-2.38	0.046
Hypertension	1.35	0.97-1.89	0.077
Chronic constipation (absence)	1.11	0.77-1.61	0.578
Previous adequate cleansing	2.23	1.30-3.85	0.004
Preparation (ref = 4 L PEG)
2 L PEG	0.89	0.66-1.20	0.458
1 L PEG	1.60	0.91-2.80	0.099
Preparation (ref = 2 L PEG)
4 L PEG	1.12	0.83-1.51	0.458
1 L PEG	1.79	1.04-3.08	0.035
Afternoon-morning split regimen	2.52	1.62-3.92	< 0.001
Low fiber diet ≥ 3 d	2.49	1.71-3.64	< 0.001
Time lag ≤ 5 h	2.35	1.34-4.10	0.003

BMI: Body mass index; PEG: Polyethylene glycol.