Comparing reduced-dose sodium phosphate tablets to 2 L of polyethylene glycol: A randomized study

Table 1 Baseline characteristics n (%)

	PEG	NaP	P value
	n = 98	n = 95
Age (range)	49.5 (22-64)	50 (27-64)	0.84
Sex (male)	39 (40)	42 (44)	0.56
Body mass index (range)	22.9 (16.4-32.4)	23.3 (13.1-39.3)	0.73
History of abdominal surgery	25 (26)	28 (30)	0.75
Stool frequency
Fewer than once a day	20 (21)	21 (22)	0.86
Once a day	60 (61)	55 (58)	0.66
Twice a day or more	18 (18)	19 (20)	0.86
Past colonoscopy	38 (39)	53 (56)	0.02
Indication for colonoscopy
FOBT positive or rectal bleeding	55 (56)	46 (48)	0.31
Follow-up for polyps	20 (20)	18 (19)	0.86
Screening	10 (10)	13 (14)	0.51
Change in bowel habit	8 (8)	13 (14)	0.25
Others	5 (5)	5 (5)	1.00

The P values were calculated by the χ² test or Mann-Whitney test. PEG: Polyethylene glycol; NaP: Sodium phosphate; FOBT: Fecal occult blood test.