Table 2. Characteristics of Colonoscopy Preparation Methods (n=399).

Variable	Value
Bowel cleaning regimen
Single/split	178 (44.6)/221(55.4)
No low fiber diet within 48 hours of CFS	290 (72.7)
Total amount of preparation solution uptake (L)	3.03±0.54
Single	3.06±0.49
Split	3.01±0.61
Time to CFS after preparation (hr)	5.0 (1.5–16.0)
Procedure time (min)	14 (5–70)
Pattern of last defecation before colonoscopy
Clear water	387 (97.0)
Liquid with residue	11 (2.8)
Semi-solid	1 (0.3)

Values are presented as number (%), mean±SD, or median (range).

CFS, screening colonoscopy.