Table 1:

Characteristics of patients and endoscopists included in the study

Characteristic	Value
Patients (n= 689)
Age, yr, mean (SD)	60 (7.0)
Female sex, no. (%)	340 (49.3)
Endoscopists (n= 35)
No. of colonoscopies per endoscopist, mean (SD)	19.7 (16.5)
No. of colonoscopies per site, mean (SD)	98.4 (54.2)
Specialty, no. (%)
Gastroenterologist	31 (88.6)
Other	4 (11.4)
Complete colonoscopies, no. (%)
Screening	337/344 (98.0)
Nonscreening	326/345 (94.5)
No. of endoscopists [colonoscopies] per site
A	5 [94]
B	7 [118]
C	4 [177]
D	8 [142]
E	5 [94]
F	5 [44]
G	2 [20]

Note: SD = standard deviation.