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Non-surgical Treatments for Urinary Incontinence in Adult Women: Diagnosis and Comparative Effectiveness

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Modes of Results Reporting and Statistical Analysis in the CER (2 of 2)

Relative Risk (RR): The ratio of the rate (absolute risk, probability) of an event in the treatment group to the rate of the event in the comparison group.

  • For RR, the result is statistically significant at p < 0.05 when the 95 percent confidence interval does not include 1.0, which is the point of equal risk for both groups.

Absolute Risk Difference: The absolute value of the mathematical difference between the rates (risk) of an event in the treatment and comparison groups.

  • ARD = | ARC–ART |

Number of Attributable Events per 1,000: The number of reported events that can be attributed to the intervention of interest per 1,000 treated patients.

  • The attributable events value is calculated from the ARD.

  •  Number of attributable events per 1,000 = 1,000 x |ARC-ART|