Morning colonoscopy

	Preparation group				P*
	4L PEG (n=134)	2L PEG + B (n=136)	NaP (n=100)	PSMC + M (n=121)
Right colon	1.49	1.17	2.38	1.58	<0.0001†
Middle colon	1.00	0.87	1.37	1.02	0.002‡
Rectosigmoid colon	1.09	0.94	1.30	0.80	0.004§
Overall fluid	0.56	0.56	0.33	0.46	0.12
Total score (95%CI)	4.14 (3.63–4.64)	3.51 (3.06–3.96)	5.37 (4.80–5.94)	3.84 (3.35–4.34)	<0.0001¶

^*Corrected for multiple comparisons;

^†Significant difference between NaP and 4L PEG, between NaP and 2L PEG+B, and between NaP and PSMC;

^‡Significant difference between NaP and 4L PEG, between NaP and 2L PEG + B, and between NaP and PSMC;

^§Significant difference between NaP and 4L PEG, between NaP and 2L PEG + B, and between NaP and PSMC.

^¶Significant difference between NaP and 4L PEG, between NaP and 2L PEG + B, and between NaP and PSMC. B Bisacodyl; M Magnesium citrate; NaP Sodium phosphate; PEG Polyethylene glycol; PSMC Pico-Salax (Ferring Pharmaceuticals Inc, Canada)