Outcomes based on bowel preparation regimen (SDR vs NSDR)
| NSDR (N=1017) (%) | SDR (N=625) (%) | Total (N=1642) (%) | P value | |
| Preparation quality | ||||
| Fair | 290 (28.5) | 109 (17.4) | 399 (24.3) | <0.001 |
| Good | 572 (56.2) | 461 (73.8) | 1033 (62.9) | |
| Poor | 155 (15.2) | 55 (8.8) | 210 (12.8) | |
| ADR | 29.9 | 34.2 | 31.5 | 0.074 |
ADR, adenoma detection rate; NSDR, non-split dose regimen; SDR, split-dose regimen.