Table 3.

Comparison of secondary outcomes by ITT analysis.

Outcomes	Formula LRD group (n = 275)	Self-prepared LRD group (n = 275)	P
Dietary compliance rate	254 (92.4)	217 (78.9)	<0.001
Tolerance
Degree of hunger	8.11 ± 2.15	5.98 ± 2.50	<0.001*
Intensity of physical strength	8.36 ± 1.69	6.36 ± 2.33	<0.001*
Influence on daily activities	8.33 ± 2.42	6.57 ± 2.33	<0.001*
Satisfaction	8.56 ± 1.61	7.20 ± 2.02	<0.001*
PEG compliance rate	268 (97.5)	258 (93.8)	0.037
Adverse reactions
Nausea	32 (11.6)	39 (14.2)	0.373
Vomiting	17 (6.2)	21 (7.6)	0.501
Bloating	23 (8.4)	19 (6.9)	0.521
Abdominal pain	9 (3.3)	7 (2.5)	0.612
Insomnia	8 (2.9)	15 (5.5)	0.136
Allergy	0 (0)	1 (0.4)	>0.999
Cecal intubation rate	273 (99.3)	269 (97.8)	0.285
Cecal intubation time, minutes	6.17 ± 4.49	6.84 ± 5.74	0.124
Withdrawal time, minutes	8.07 ± 2.71	7.79 ± 3.29	0.282
Adenoma detection rate	70 (25.5)	44 (16.0)	0.006

LRD, low-residue diet.

^*The p-value was calculated by the Wilcoxon–Mann–Whitney test.