C | Total cost of Diagnostic Related Group (DRG) |

C_{
np
}
| Total cost of DRG for new patient(s) under analysis |

ω | Risk adjustment factor |

R | Number of readmissions for current fiscal period |

P | Number of total patients in DRG for current fiscal period |

ρ
| Expected rate |

\( \hat{\rho } \) | Predicted rate |

p
_{
r
}
| Probability of needing readmission |

N | Number of new patients under consideration |

N_{s}
| Number of new patients to select for intervention |

p
_{
s
}
| Probability of intervention success |

\( \bar{c}_{t} \) | Average cost of patient intervention (i.e. home healthcare professional) |