Repeat Colonoscopy within 6 Months after Initial Outpatient Colonoscopy in Ontario: A Population-Based Cross-Sectional Study
Table 3
Adjusted odds ratios for very early repeat .
Clinical setting of index colonoscopy
Overall
Teaching hospital
Community hospital
Nonhospital facility
OR (95% CI)
OR (95% CI)
OR (95% CI)
OR (95% CI)
Patient factors
Patient age (per one year increase)
1.01 (1.01, 1.02)
1.01 (1.00, 1.02)
1.01 (1.01, 1.02)
1.02 (1.01, 1.02)
Patient sex
Female
0.70 (0.66, 0.73)
0.69 (0.60, 0.80)
0.67 (0.62, 0.71)
0.73 (0.68, 0.79)
Male
Reference
Reference
Reference
Reference
Patient ADG
1.05 (1.04, 1.06)
1.08 (1.06, 1.10)
1.05 (1.04, 1.07)
1.02 (1.02, 1.04)
Index colonoscopy factors
Setting
Teaching hospital
1.03 (0.91, 1.18)
Not applicable
Not applicable
Not applicable
Community hospital
Reference
Nonhospital facility
1.41 (1.29, 1.55)
Complete
Reference
Reference
Reference
Reference
Incomplete
10.92 (9.89, 12.06)
9.49 (7.80, 11.54)
9.50 (8.28, 10.93)
14.60 (12.19, 17.49)
Most complex procedure at index colonoscopy
Removal of large polyp or obstructing lesion
30.39 (25.62, 36.04)
19.94 (12.99, 30.61)
40.07 (33.15, 48.43)
23.54 (17.26, 32.11)
Standard polypectomy
2.82 (2.63, 3.03)
2.96 (2.45, 3.57)
2.82 (2.56, 3.11)
2.86 (2.52, 3.25)
Biopsy
2.40 (2.17, 2.66)
1.43 (1.12, 1.83)
2.30 (1.99, 2.66)
3.34 (2.82, 3.95)
None of the above
Reference
Reference
Reference
Reference
Index endoscopist factors (prior year volumes)
Colonoscopy
0.98 (0.97, 0.99)
0.95 (0.93, 0.97)
0.94 (0.91, 0.98)
1.00 (0.98, 1.02)
Standard polypectomy
1.03 (1.01, 1.04)
1.06 (1.02, 1.10)
1.05 (1.03, 1.07)
1.01 (0.98, 1.04)
Large or obstructing polypectomy
0.98 (0.96, 1.01)
1.00 (0.95, 1.06)
0.94 (0.91, 0.98)
1.01 (0.97, 1.05)
one unit increase; root transformation; transformation; adjusted for patient socioeconomic status, colonoscopy open versus closed access, and endoscopist specialty and sex).
