| groupedSurv-package | Efficient Estimation of Grouped Survival Models Using the Exact Likelihood Function | 
| alphaEstFam | Estimate the Interval Baseline Survival Rates for the Grouped Failure Time Model | 
| betaEst | Estimate the Parameter of Interest for the Grouped Survival Model | 
| betaEstFam | Estimate the Fixed Effect Parameter for the Frailty Model | 
| geneStat | Compute Gene-Level Statistics Based on Efficient Score Statistics for the Grouped Survival Model | 
| groupedSurv | Compute the Efficient Score Statistic for the Grouped Survival Model | 
| groupedSurvFam | Compute the Efficient Score Statistic for the Frailty Model | 
| PvalueFam | Estimate P-values of the Efficient Score Statistics for the Frailty Model | 
| thetaEst | Estimate the Baseline Survival Rates and Covariate Parameters for the Grouped Survival Model | 
| varEstFam | Estimate the Frailty Variance for the Frailty Model | 
| varLLFam | Log-Likelihood of the Frailty Variance for the Discrete-Time Frailty Model |