Bowel preparation protocol for hospitalized patients ages 50 years or older: A randomized controlled trial

Table 2 Comparison of the degree of cleansing of the bowel preparation regimens and colonoscopy findings between groups 1 and 2, n (%)

Variables	Group 11	Group 22	P value
Intention-to-treat analysis	n = 148	n = 156	N/A
Right BBPS score ≥ 2	112 (75.7)	116 (74.4)	0.791
Transverse BBPS score ≥ 2	145 (98.0)	149 (95.5)	0.379
Left BBPS score ≥ 2	148 (100.0)	155 (99.4)	0.247
Global BBPS score ≥ 6	135 (91.2)	142 (91.0)	0.953
Mean BBPS in the right colon	1.92 ± 0.634	1.92 ± 0.727	0.861
Mean BBPS in the transverse colon	2.73 ± 0.489	2.68 ± 0.556	0.539
Mean BBPS in the left colon	2.64 ± 0.483	2.58 ± 0.507	0.395
Mean BBPS in the whole colon	7.28 ± 1.167	7.18 ± 1.346	0.676
Polyp detection rate	108 (73.0)	104 (66.7)	0.232
Adenoma detection rate	84 (56.8)	73 (46.8)	0.082
Tumor detection rate	6 (4.1)	5 (3.2)	0.684
Per-protocol analysis	n = 146	n = 155	N/A
Right BBPS score ≥ 2	112 (76.7)	116 (74.8)	0.705
Transverse BBPS score ≥ 2	143 (97.9)	148 (95.5)	0.234
Left BBPS score ≥ 2	146 (100.0)	154 (99.4)	0.331
Global BBPS score ≥ 6	134 (91.8)	141 (91.0)	0.802
Mean BBPS in the right colon	1.93 ± 0.629	1.92 ± 0.726	0.924
Mean BBPS in the transverse colon	2.73 ± 0.488	2.68 ± 0.555	0.556
Mean BBPS in the left colon	2.64 ± 0.483	2.58 ± 0.508	0.354
Mean BBPS in the whole colon	7.30 ± 1.159	7.19 ± 1.347	0.639
Polyp detection rate	106 (72.6)	103 (66.5)	0.247
Adenoma detection rate	83 (56.8)	72 (46.5)	0.071
Tumor detection rate	6 (4.1)	5 (3.2)	0.674

¹Group 1: 30 mL of lactulose on the day before the colonoscopy, three meals with a low-residue liquid diet, and 2 L of water mixed with polyethylene glycol on the colonoscopy day.

²Group 2: Regular diet for breakfast and lunch, fasting or a low-residue liquid diet for dinner, and 2 L of water mixed with polyethylene glycol (PEG) on the day before the colonoscopy; 2 L of water mixed with PEG on the colonoscopy day.

Data are mean ± SD or n (%). BBPS: Boston bowel preparation scale; N/A: Not applicable.