Efficacy of 0.5-L vs 1-L polyethylene glycol containing ascorbic acid as additional colon cleansing methods for inadequate bowel preparation as expected by last stool examination before colonoscopy

Table 5 Results of colonoscopy

	0.5-L Group (n = 47)	1-L Group (n = 43)	Total (n = 90)	P value
Cecal intubation	47 (100.0)	42 (97.7)	89 (98.9)	0.964
Cecal intubation time (min)	3.3 ± 1.7	3.6 ± 2.3	3.4 ± 2.0	0.507
Withdrawal time (min)	8.3 ± 2.3	7.9 ± 2.5	8.1 ± 2.4	0.432
PDR	17 (36.2)	19 (44.2)	36 (40.0)	0.575
ADR	13 (27.7)	16 (37.2)	29 (32.2)	0.870
Advanced ADR	3 (6.4)	4 (9.3)	7 (7.8)	1.000

Values are presented as the mean ± SDs or n (%). PDR: Polyp detection rate; ADR: Adenoma detection rate; 0.5-L Group: Additional 0.5-L polyethylene glycol (PEG) containing ascorbic acid (PEG + Asc) regimen; 1-L Group: Additional 1-L PEG + Asc regimen.