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Table 2 Study sample characteristics and univariate associations with post-operative colonoscopy

From: A retrospective study on the use of post-operative colonoscopy following potentially curative surgery for colorectal cancer in a Canadian province

Variable Sample distribution Probability undergoing colonoscopy P value
Sex    
   Male 2188 (56%) 0.57  
   Female 1730 (44%) 0.63 0.021
Age group    
   30 – 54 559 (14%) 0.75  
   55 – 69 1567 (40%) 0.74  
   70 – 79 1161 (30%) 0.50  
   > 80 631 (16%) 0.28 <0.0001
Place of residence    
   Urban 582 (15%) 0.60  
   Rural 3336 (85%) 0.60 0.6
Tumor site    
   Colon 2891 (74%) 0.54  
   Rectum 1027 (26%) 0.72 <0.0001
Stage    
   1 876 (22%) 0.65  
   2 1880 (48%) 0.57  
   3 1162 (30%) 0.63 0.0001
Pre-operative colonoscopy    
   Yes 1646 (42%) 0.69  
   No 2272 (58%) 0.54 <0.0001
Procedure type    
   Resection 3363 (86%) 0.62  
   Abdominoperineal resection 555 (14%) 0.47 <0.0001
Site of surgery    
   Calgary 1270 (32%) 0.58  
   Edmonton 1733 (44%) 0.63  
   Other Major City 607 (15%) 0.60  
   Other 308 (8%) 0.55 <0.0001
Adjuvant therapy    
   Yes 1049 (27%) 0.72  
   No 2869 (93%) 0.57 <0.0001
Cancer clinic visits    
   None 1691 (43%) 0.52  
   1 – 4 1434 (37%) 0.63  
   ≥ 5 793 (20%) 0.74 <0.0001
Surgeon performs colonoscopies    
   Yes 1838 (47%) 0.68  
   No 2080 (53%) 0.54 <0.0001