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Table 3 Coverage probabilities for the three scenarios with matched and unmatched analysis

From: Estimating effects of health policy interventions using interrupted time-series analyses: a simulation study

Effect size

Year of implementation

Coverage of 95% CI - matched analysis

Coverage of 95% CI - unmatched analysis

Scenario 1 with Model 1

Scenario 2 with Model 2

Scenario 3 with Model 3

Scenario 3 with Model 1

Scenario 3 with Model 2

−5

5

0.856

0.899

0.878

0.858

0.738

 

9

0.885

0.884

0.875

0.804

0.652

 

13

0.871

0.884

0.869

0.307

0.615

−10

5

0.892

0.896

0.879

0.715

0.623

 

9

0.832

0.875

0.880

0.510

0.423

 

13

0.882

0.873

0.889

0.112

0.252

−15

5

0.872

0.907

0.871

0.398

0.396

 

9

0.882

0.897

0.874

0.256

0.210

 

13

0.870

0.884

0.882

0.040

0.068