Efficacy of morning-only 4 liter sulfa free polyethylene glycol vs 2 liter polyethylene glycol with ascorbic acid for afternoon colonoscopy

Table 2 Colonoscopy data

	4-L SF-PEGn = 104		2-L PEG + Ascn = 102		P value
	Mean	SD	Mean	SD
Ottawa scores:
O-F	0.635	0.6241	0.618	0.6607	0.8499
O-L	1.327	0.7688	1.569	0.7381	0.0224
O-M	0.875	0.8324	1.029	0.8139	0.1799
O-R	1.375	0.6853	1.627	0.7025	0.0097
O-T	4.212	1.9690	4.853	1.9109	0.0186
OT < 6 - optima prep	84%		61%		0.0003
Polyp detection rate	59.6%		55.9%		0.5877
Total polyps found	1.25	1.5057	1.216	1.5455	0.8719
Adenomas	38%		37%		0.8583
Advanced adenomas	10.6%		7.8%		0.4932

SF-PEG: Sulfa-free polyethylene glycol; PEG + Asc: Polyethylene glycol solution with ascorbic acid.