Table 2.

Ottawa Bowel Preparation Scores

	Clear fluid diet	Low-residue breakfast	p Value
Intention-to-treat analysis	n=109	n=105
Total OBPS, mean±SD	4.97±3.28	4.97±2.83
(95% CI)	(4.35 to 5.59)	4.42 to 5.52)	0.999
Total OBPS, mean difference	−0.01
(95% CI)	(−0.83 to 0.83)
Right OBPS, mean±SD	1.72±1.18	1.80±1.05	0.597
(95% CI)	(1.48 to 1.95)	(1.59 to 2.02)
Fluid score, mean±SD	0.47±0.66	0.59±0.67
(95% CI)	(0.34 to 0.61)	(0.46 to 0.72)	0.220
Per-protocol analysis	n=116	n=98
Total OBPS, mean±SD	4.68±3.14	5.32±2.94	0.124
(95% CI)	(4.10 to 5.25)	(4.73 to 5.92)
Total OBPS, mean difference	−0.65
(95% CI)	(−1.47 to 0.18)
Right OBPS, mean±SD	1.62±1.16	1.93±1.04	0.050
(95% CI)	(1.39 to 1.84)	(1.71 to 2.15)
Fluid Score, mean±SD	0.45±0.64	0.63±0.69	0.069
(95% CI)	(0.33 to 0.58)	(0.48 to 0.77)
Stratified by bowel preparation timing
Traditional dosing (n=93)
Total OBPS, mean±SD	5.77±3.32	5.41±2.83	0.585
(95% CI)	(4.81 to 6.72)	(4.54 to 6.28)
Split-dosing (n=121)
Total OBPS, mean±SD	4.32±3.13	4.56±2.72	0.651
(95% CI)	(3.51 to 5.12)	(3.86 to 5.26)