| 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 |
| SSRI | Antidepressants and bone density |
| t_stat | Two sample t statistics |
| wilcoxon_stat | Wilcoxon rank statistics |