SSRI                    Antidepressants and bone density
gfks1_stat              Univariate GFKS statistics
gfks2_stat              Bivariate GFKS statistics
ks_stat                 Kolmogorov-Smirnov statistics
met                     Balance evaluation of matched samples
smd_stat                Standardized mean differences
t_stat                  Two sample t statistics
wilcoxon_stat           Wilcoxon rank statistics
