1. metaviz::brainvol
    Example data for a meta-analysis of correlations: Human brain volume and intelligence
  2. metaviz::exrehab
    Example data for a meta-analysis of dichotomous outcomes: Exercise-based cardiac rehabilitation
  3. metaviz::homeopath
    Example data for a meta-analysis of standardized mean differences: Homeopathic treatment vs. Placebo
  4. metaviz::mozart
    Example data for a meta-analysis of standardized mean differences: Mozart effect