Optimal Timing of Simethicone Supplement for Bowel Preparation: A Prospective Randomized Controlled Trial

Table 1

Baseline characteristics.

	SIM evening group (n = 208)	SIM morning group (n = 211)	value
Gender, n(%)
Male	111 (53.4%)	102 (48.3%)	0.30^a
Female	97 (46.6%)	109 (51.7%)
Age (years)	45.0 (34.3–55.0)	44.0 (34.0–56.0)	0.92^b
BMI (kg/m^2)	22.3 ± 2.9	22.1 ± 3.7	0.52^c
Indications for colonoscopy, n (%)
Constipation	23 (11.1%)	24 (11.4%)	0.99^a
Abdominal pain	51 (24.5%)	49 (23.2%)
Diarrhea	35 (16.8%)	35 (16.6%)
Bloating	5 (2.4%)	5 (2.4%)
Screening CRC	94 (45.2%)	98 (46.4%)

Note. BMI, body mass index; CRC, colorectal cancer; a, Pearson’s χ2 test; b, Mann–Whitney test; c, Student’s t-test.