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Table 5 Placebo test for incorrect policy implementation period

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

Outcome

 

DD

  

Marginal effect

95% CI

p

FOBT

Post interventiona

0.0875

0.0551

0.1200

0.000

 

Ontario

0.0688

0.0439

0.0936

0.000

 

Ontario*Posta

−0.0204

−0.0557

0.0148

0.256

Endoscopy

Post interventiona

0.0001

−0.0205

0.0208

0.989

 

Ontario

0.0100

−0.0052

0.0253

0.198

 

Ontario*Posta

0.0218

−0.0010

0.0447

0.061

  1. N = 30,484; Weighted N = 1,468,619. All results are weighted. Dependent variable is self-report of having a FOBT or endoscopy (flexible sigmoidoscopy or colonoscopy) in the past year. 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.
  2. a: The post intervention period has been altered to equal 2007. Data from 2008–9 are not included.