| makeXZy | Prepare Design Matrices and Response Vector | 
| margins | Compute Marginal Effects for One-inflated models | 
| oneinfl | One-Inflated Regression Model | 
| oneLRT | Likelihood Ratio Test for Nested Models | 
| oneplot | Plot Observed Data and Model Predictions | 
| oneWald | Wald Test for One-Inflation | 
| predict.oneinflmodel | Predicted Expected Response for One-Inflated or Truncated Models | 
| predict.truncmodel | Predicted Expected Response for One-Inflated or Truncated Models | 
| roipp | Generate Random Counts from a One-Inflated Poisson Process | 
| roiztnb | Generate Random Counts from a One-Inflated Zero-Truncated Negative Binomial Process | 
| rpp | Generate Random Counts from a Zero-Truncated Poisson Process | 
| signifWald | Wald Test for Significance of a Predictor Variable | 
| summary.oneinflmodel | Summarize One-Inflated Regression Models | 
| summary.truncmodel | Summarize Truncated Regression Models | 
| truncreg | Truncated Regression Model |