Table 4.

Efficacy and colonoscopy outcomes according to age.

	Under 65 years of age (N = 118)			65 years of age and older (N = 61)
	OST group (n = 60)	PEG group (n = 58)	P value	OST group (n = 29)	PEG group (n = 32)	P value
BBPS score
Total	8.32 ± 0.97	7.55 ± 1.51	.002	8.07 ± 1.56	7.38 ± 1.29	.062
Right colon	2.65 ± 0.52	2.31 ± 0.65	.002	2.59 ± 0.63	2.25 ± 0.57	.032
Transverse colon	2.82 ± 0.39	2.62 ± 0.56	.029	2.79 ± 0.41	2.50 ± 0.51	.016
Left colon	2.85 ± 0.36	2.66 ± 0.52	.019	2.69 ± 0.66	2.59 ± 0.56	.542
Bubble score
Total	8.80 ± 0.61	7.47 ± 1.45	<.001	8.59 ± 0.91	7.22 ± 1.93	.001
Right colon	2.87 ± 0.34	2.24 ± 0.63	<.001	2.79 ± 0.41	2.22 ± 0.79	.001
Transverse colon	2.97 ± 0.18	2.52 ± 0.60	<.001	2.86 ± 0.44	2.47 ± 0.62	.006
Left colon	2.97 ± 0.18	2.71 ± 0.50	<.001	2.93 ± 0.26	2.66 ± 0.55	.014
Polyp detection
Total	34 (56.7)	33 (56.9)	.980	22 (75.9)	19 (59.4)	.187
Right colon	21 (35.0)	18 (31.0)	.698	17 (58.6)	13 (40.6)	.204
Transverse colon	14 (23.3)	10 (17.2)	.495	8 (27.6)	7 (21.9)	.767
Left colon	24 (40.0)	24 (41.4)	.879	13 (47.6)	13 (41.4)	.799
Adenoma detection
Total	23 (38.3)	23 (39.7)	.883	17 (58.6)	16 (50.0)	.609
Right colon	12 (20.0)	17 (29.3)	.288	12 (41.4)	9 (28.1)	.296
Transverse colon	13 (21.7)	7 (12.1)	.221	6 (20.7)	5 (15.6)	.743
Left colon	8 (13.3)	13 (22.4)	.234	8 (27.6)	7 (21.9)	.767
Endoscopist satisfaction*	8.98 ± 0.89	7.72 ± 1.42	<.001	8.48 ± 1.48	7.78 ± 1.43	.065

Values are presented as mean ± standard deviation or n (%).

BBPS =Boston Bowel Preparation Scale, OST = oral sulfate tablet, PEG = polyethylene glycol.

^*Visual analog scale score (0–10 points, 0: very bad, 10: excellent).