Skip to main content

Table 3 Variances for matched pairs comparisons.

From: Calculating unreported confidence intervals for paired data

Statistic Variance Estimate of variance
risk difference (general)*
risk difference (null)**
log risk ratio (general)
log odds ratio (general)
  1. *Altman et al. [11], p.52.
  2. **Fleiss, Levin and Paik [12], p.375.
  3. Væth and Poulsen [13]
  4. Rothman and Greenland [14], p.286