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Table 1 Probability of CRC incidence and mortality in the two cohorts - Unadjusted model

From: Methodological approaches to population based research of screening procedures in the presence of selection bias and exposure measurement error: colonoscopy and colorectal cancer outcomes in Ontario

Study cohorts

 

Colonoscopy

Estimate

95% CI

Absolute risk difference

95% CI

Unselected cohort (n = 1,341,612)

      
 

Incidence

     
  

No

1.61

1.59, 1.63

3.00

2.69, 3.30

  

Yes

4.61

4.31,4.91

  
 

Mortality

     
  

No

0.36

0.33, 0.38

0.80

0.73, 0.87

  

Yes

1.16

1.10, 1.23

  

Restricted cohort (n = 1,089,998)

      
 

Incidence

     
  

No

1.36

1.35, 1.39

-0.52

-0.60, -0.46

  

Yes

0.84

0.77, 0.91

  
 

Mortality

     
  

No

0.23

0.19, 0.27

-0.08

-0.13, -0.03

  

Yes

0.15

0.12, 0.17

  
  1. Data are presented as percentages.
  2. CRC, colorectal cancer; CI, confidence interval.