| BdW | Beta discrete Weibull (BdW) Model for Projecting Customer Retention. |
| BG | Beta Geometric (BG) Model for Projecting Customer Retention. |
| customer_retention | Observed % Customers Surviving at Least 0-12 Years |
| exltrend | Excel based trendlines for projecting customer retention. |
| LCW | Latent Class Weibull (LCW) Model for Projecting Customer Retention |
| persistency_data | Drug persistency (retention) rates by different therapeutic class. |