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Table 3 Difference-in-differences estimates for fecal occult blood test and endoscopy outcomes

From: Effectiveness of an organized colorectal cancer screening program on increasing adherence in asymptomatic average-risk Canadians

Outcome

 

DDa

DDb

  

Marginal effect

95% CI

p

Marginal effect

95% CI

p

FOBT

Post intervention

0.073

0.052

0.095

0.000

0.074

0.053

0.095

0.000

 

Ontario

0.082

0.059

0.104

0.000

0.064

0.041

0.086

0.000

 

Ontario*Post

0.050

0.030

0.070

0.000

0.052

0.032

0.071

0.000

Endoscopy

Post intervention

0.022

0.008

0.037

0.003

0.023

0.009

0.038

0.002

 

Ontario

0.018

0.005

0.031

0.006

0.009

−0.004

0.022

0.182

 

Ontario*Post

0.007

−0.007

0.021

0.301

0.009

−0.005

0.023

0.207

  1. N = 58,142; Weighted N = 2,882,630. All results are weighted.
  2. Dependent variable is self-report of having a FOBT or endoscopy (flexible sigmoidoscopy or colonoscopy) in past year.
  3. a: controlled for year and province indicators.
  4. b: controlled for year, province, sex, age category, geography, self-rated health, having MD, reporting flu shot, physical activity index, smoking status, ethnicity, education, income, #GP consultations past year.
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BMC Health Services Research

ISSN: 1472-6963

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