Table 1.

Patient characteristics

Mean age, years	60.1 ± 14.0
Men, n (%)	256 (51.2)
Education level, n (%)
Primary or lower	196 (39.1)
Secondary or higher	305 (60.9)
In-patient or out-patient status, n (%)
Out-patient	354 (70.6)
In-patient	147 (29.4)
Timing of colonoscopy, n (%)
Morning	421 (84.2)
Afternoon	80 (15.8)
Colonoscopy appointment waiting time, n (%)
< 1 week	108 (21.6)
2 - 15 weeks	148 (29.5)
> 16 weeks	245 (48.9)
Overweight or obese patient (based on BMI ≥ 23 for Asian population), n (%)	266 (53.5)
Presence of concomitant medical illness, n (%)	222 (44.6)
Patient with previous colonoscopy, n (%)	161 (32.3)
Patient with previous abdominal or pelvic surgery, n (%)	134 (26.9)
Compliant to bowel preparation, n (%)	383 (76.4)