Area_Level_Data         Area level data
Individual_Level_Data   Individual level data
Realdata_Finalmodel     This function is used to estimate model
                        parameters
Sim_Estpar              Calculating the estimated values for the
                        parameters using log-likelihood function
Sim_Loglik              This function calculates the value of the
                        log-likelihood function
Simulation_Finalmodel   This function can use to estimate the model
                        parameters using the initial values.
TwoWeek                 TwoWeek
