Split-dose vs same-day reduced-volume polyethylene glycol electrolyte lavage solution for morning colonoscopy

Table 1 Patient characteristics

Characteristics	Whole-dose same-morning	Split-dose	P
	n = 152	n = 143
Age, yr	61.3 ± 14.9	62.8 ± 13.9	0.378
Male	51.3%	49.0%	0.685
Race
Chinese	56.6%	60.1%	0.434
Malay	21.7%	18.9%
Indian	21.7%	19.6%
Others	0%	1.4%
Education level
None or primary	28.9%	23.8%	0.314
Secondary or higher	71.1%	76.2%
Appointment waiting time
Less than 16 wk	52.6%	48.3%	0.452
16 wk or longer	47.4%	51.7%
Medical condition
Diabetes mellitus	23.7%	19.6%	0.393
Chronic constipation	7.9%	8.4%	0.876
Neurological condition	2.0%	2.8%	0.716
Others	52.6%	55.2%	0.514
Previous abdominal surgery	39.5%	38.5%	0.859
Previous colonic resection	21.1%	13.3%	0.078
Indication
Surveillance	30.3%	32.9%	0.263
Screening	16.4%	27.3%
Altered bowel habit	13.8%	14.0%
Per rectal bleeding	12.5%	9.8%
Abdominal pain	11.2%	6.3%
Anemia	5.3%	3.5%
Chronic diarrhoea	3.9%	1.4%
Chronic constipation	3.3%	3.5%
Others	3.3%	1.4%
Diagnosis
Normal colonoscopy	53.0%	46.5%	0.233
Colonic polyp	23.2%	26.8%
Diverticular disease	9.3%	11.3%
Colorectal carcinoma	4.0%	0.7%
Others	10.6%	14.8%
Seniority of endoscopist
Senior	34.2%	39.9%	0.315
Trainee	65.8%	60.1%