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Table 1 Power Calculation for Detecting Associations Between Air Pollution Categories (Q4 vs. Q1- 3) and Primary Outcomes

From: Cumulative exposure to air pollution and long term outcomes after first acute myocardial infarction: A population-based cohort study. Objectives and methodology

  Least Extreme Detectable Hazard Ratio
Power Recurrent Coronary Event Heart Failure Stroke Cardiac Mortality All-Cause Mortality
80% 1.21 1.37 1.47 1.40 1.35
85% 1.23 1.40 1.50 1.43 1.37
90% 1.25 1.43 1.55 1.47 1.40