Table 3.

Analysis of risk factors for endoscopy-related complications or premedication contraindications according to age

	<65 years old (n = 883)	≥65 years old (n = 597)	p value
First time endoscopy	29.9% (264)	23.1% (138)	0.0042
Lignocaine allergy	2.8% (25)	1.0% (6)	0.0160
Antithrombotic therapy	11.1% (98)	24.6% (147)	<0.0001
Heart disease	19.8% (175)	40.0% (239)	<0.0001
Hypertension	15.1% (133)	35.8% (214)	<0.0001
Glaucoma	2.5% (22)	5.4% (32)	0.0046
Prostatic hypertrophy	4.8% (42)	14.4% (86)	<0.0001
Diabetes	5.8% (51)	11.4% (68)	<0.0001

All data were expressed as mean. Analyses were conducted using Fisher’s exact method (chi-square test).