Comparison of Pentax HiLine and Olympus Lucera systems at screening colonoscopy

Table 1 Colonoscopy completion rates, patient demographics, sedation doses, procedure times and comfort scores in the Olympus Lucera and Pentax HiLine groups

Indicator	Olympus Lucera	Pentax HiLine	P value
	n (% of total)1
Complete colonoscopies	413/425 (97.2)	55/58 (94.9)	0.24
Male patients	239/413 (57.9)	35/55 (63.7)	0.5
	mean ± SD2
Patient age (yr)	66.3 ± 4.3	65.8 ± 4.7	0.36
Fentanyl dose (μg)	57.5 ± 18.0	61.4 ± 18.5	0.13
Midazolam dose (mg)	2.1 ± 0.6	2.4 ± 0.7	0.035
Comfort score	0.49 ± 0.6	0.95 ± 0.6	< 0.0001
Insertion time (min)	11.1 ± 6.6	11.6 ± 7.5	0.93
Normal colonoscopy withdrawal time (min)	15.6 ± 8.2	14.7 ± 8.0	0.20

Comparisons made using Fisher’s exact test¹ or Mann-Whitney U test².