Split-dose menthol-enhanced PEG vs PEG-ascorbic acid for colonoscopy preparation

Figure 1 Quality of bowel preparation on the modified Aronchick scale. P-value for the difference between AscPEG and PEG + M Aronchick scores is 0.31; P-value for the difference between excellent results with PEG + M and AscPEG is 0.009. PEG + M: PEG electrolyte solution + menthol; AscPEG: Ascorbic acid PEG electrolyte solution.

Figure 2 Overall preparation score according to the Ottawa score (a lower score indicates a better preparation). P-value for the difference between AscPEG and PEG + M Ottawa scores is 0.054. PEG + M: PEG electrolyte solution + menthol; AscPEG: Ascorbic acid PEG electrolyte solution.

Figure 3 Palatability of the colon preparation (score ≤ 3: Unpalatable; 4 or 5: Palatable). P-value for the difference in palatability between AscPEG and PEG + M is 0.03. PEG + M: PEG electrolyte solution + menthol; AscPEG: Ascorbic acid PEG electrolyte solution.