Canadian Journal of Gastroenterology and Hepatology / 2017 / Article / Tab 3

Research Article

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
OverallTeaching hospitalCommunity hospitalNonhospital 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
 Female0.70 (0.66, 0.73)0.69 (0.60, 0.80)0.67 (0.62, 0.71)0.73 (0.68, 0.79)
 MaleReferenceReferenceReferenceReference
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 hospital1.03 (0.91, 1.18)Not applicableNot applicableNot applicable
 Community hospitalReference
 Nonhospital facility1.41 (1.29, 1.55)
CompleteReferenceReferenceReferenceReference
Incomplete10.92 (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 lesion30.39 (25.62, 36.04)19.94 (12.99, 30.61)40.07 (33.15, 48.43)23.54 (17.26, 32.11)
Standard polypectomy2.82 (2.63, 3.03)2.96 (2.45, 3.57)2.82 (2.56, 3.11)2.86 (2.52, 3.25)
Biopsy2.40 (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 aboveReferenceReferenceReferenceReference

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).

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