Wang L, et al. - The effect of changing from single- to split-dose preparation on colonoscopy quality measures was examined in this study. The authors found no significant adenoma detection rate improvement with high baseline rate while split-dose preparation significantly improved overall bowel cleanliness, proposing a threshold which could not improve with enhanced preparations. Split-dose preparation significantly reduced the frequency with which inadequate preparation prompted an early repeat examination, which had important clinical implications on performance, costs, and patient experience, providing further evidence supporting split-dose preparation use.