| tightenBlock-package | Tightens an Observational Block Design by Balanced Subset Matching |
| addMahal | Rank-Based Mahalanobis Distance Matrix |
| addNearExact | Add a Near-exact Penalty to an Exisiting Distance Matrix. |
| aHDLt | Alcohol and HDL Cholesterol |
| makematch | Make a Match Using Two Criteria Matching with Optimal Subset Matching |
| makenetwork | Make the Network Used for Matching with Two Criteria |
| startcost | Initialize a Distance Matrix. |
| tighten | Tightening an Observational Block Design |
| tightenBlock | Tightens an Observational Block Design by Balanced Subset Matching |