Craft2003               18 studies of correlation coefficients reported
                        by Craft et al. (2003)
Geeganage2010           17 studies of multivariate effect sizes
                        reported by Geeganage et al. (2010)
lgOR.vcov               Covariance matrix for log odds ratios
lgRR.vcov               Covariance matrix for log risk ratios
lgor_lgrr               Covariance between log odds ratio and log risk
                        ratio
lgor_rd                 Covariance between log odds ratio and risk
                        difference
lgrr_rd                 Covariance between log risk ratio and risk
                        difference
md.vcov                 Covariance matrix for mean differences
md_lgor                 Covariance between mean difference and log odds
                        ratio
md_lgrr                 Covariance between mean difference and log risk
                        ratio
md_rd                   Covariance between mean difference and risk
                        difference
md_smd                  Covariance between mean difference and
                        standardized mean difference
metavcov-package        Variances and Covariances for Multivariate
                        Meta-Analysis
mix.vcov                Covariance matrix for mixed effect sizes
r.vcov                  Covariance matrix for correlation coefficients
rd.vcov                 Covariance matrix for risk differences
smd.vcov                Covariance matrix for standardized mean
                        differences
smd_lgor                Covariance between standardized mean difference
                        and log odds ratio
smd_lgrr                Covariance between standardized mean difference
                        and log risk ratio
smd_rd                  Covariance between standardized mean difference
                        and risk difference
