Description Usage Arguments Details Value

Get the matrices M and H to approximate the true covariance matrix of the GEE case

1 |

`y` |
A matrix containing current response variable |

`X` |
A data frame containing the covariate for the current samples |

`id` |
The id for each subject in the X |

`beta` |
The paramters that we estimate when we use the current samples |

`rho` |
A numeric number indicating the estimate of correlation coefficient |

`linkv` |
A specification for the model link function. |

`corstrv` |
A character string specifying the correlation structure. The following are permitted: "independence", "exchangeable" and "ar1". |

getMH uses the current samples to obtain the covariance matrix.

a list contains several components

`sandwich` |
the sandwich information matrix for covariance |

`M` |
the matrix for calculating the sandwich information matrix for covariance |

`H` |
the matrix for calculating the sandwich information matrix for covariance |

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