Patient age and duration of colonoscopy are predictors for adenoma detection in both proximal and distal colon

Table 1 Patient and procedural characteristics of 551 cases included in the analysis

Patients
Age (yr)	62 (18-90)
Gender: male/female	285 (52)/266 (48)
Setting: in-patient/out-patient	298 (54)/249 (46)
BMI	24.8 (15.1-41.5)
Sleep apnea syndrome: yes/no	17 (3)/528 (97)
Previously known sedation related complications: no/yes	540 (99)/7 (1)
ASA classification: I/II/III	160 (29)/215 (39)/173 (32)
Lung disease: yes/no	59 (11)/489 (89)
Heart disease: yes/no	132 (24)/416 (76)
Procedural measurements and safety monitoring
Using capnography	267 (50)
Investigation time (min)	32 (2-126)
Hypoxemia (at least one episode)	241 (44)
Hypoxemia (p02 < 90%; at least one episode)	71 (13)
Hypoxemia (p02 < 85%, at least one episode)	23 (4)
Hypotension (at least one episode)	10 (2)
Bradycardia (at least one episode)	50 (9)
Using midazolam	57 (10)
Using propofol	526 (95)
Propofol dose (mg)	140 (0-800)

Numbers are mean values (range: minimum-maximum) or frequencies (percentages). BMI: Body mass index.