Impact of sedation on adenoma and polyp detection rates and cecal intubation in elderly patients undergoing screening colonoscopy

Table 1 Patients’ characteristics and outcomes according to sedation and no sedation groups, n (%)

Variable	Sedation, n = 622	No sedation, n = 1412	P value
Age in years	68 (64-73)	70 (65-76)	< 0.01a
Female sex	359 (57.7)	655 (46.4)	< 0.01b
BMI kg/m2	27.1 (23.7-29.9)	27 (24.3-30.5)	0.25
BBPS	9 (6-9)	8 (6-9)	0.15
PDR	320 (51.5)	731 (51.8)	0.92
ADR	202 (32.5)	472 (33.5)	0.68
CIR	593 (95.3)	1316 (93.2)	0.07
Intubation of terminal ileum	342 (55.1)	680 (48.2)	< 0.01a
Previous operation	186 (29.9)	488 (34.6)	0.04
Diverticulosis	272 (43.8)	523 (37.1)	< 0.01c

^aP < 0.05 vs sedation-free group.

^bP < 0.05 vs male sex.

^cP < 0.05 vs group without diverticulosis.

Data are presented as mean (range) or n (%). Age U = 368204, Z = -5.8; sex χ² (1, n = 2034) = 2217; body mass index U = 58113, Z = -1.1; BBPS U = 404391.5; z = -1.4; polyp detection rate: χ² (1, n = 2033) = 0.01; adenoma detection rate: χ² (1, n = 2031) = 0.17; cecal intubation rate: χ² (1, n = 2034) = 3.41; terminal ileum intubation χ² (1, n = 2032) = 8.16; previous operationχ² (1, n = 2034) = 4.4; diverticulosis χ² (1, n = 2031) = 8.14. ADR: Adenoma detection rate; BBPS: Boston bowel preparation scale; BMI: Body mass index; CIR: Cecal intubation rate; PDR: Polyp detection rate.