Fit a logistic regression model.

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`x, y` |
x is a data frame or data matrix containing the predictor variables and y is the vector of outcomes. The number of rows in x must be the same as the length of y. |

`initial` |
a vector of starting values for the parameters in the linear predictor; if not specified, the default initials are 0 for all parameters. |

`max.iter` |
a positive integer giving the maximal number of iterations; if it is reached, the algorithm will stop. |

`epsilon` |
a positive convergence tolerance epsilon; the iterations converge when max(|par-par_old|)<epsilon. |

`detail` |
logical indicating if output should be printed for each iteration. |

`estimates` |
a named matrix of estimates including parameter estimates, standard errors, z-scores, and p-values. |

`n.iter ` |
an integer giving the number of iteration used |

`d` |
the actual max absolute difference of the parameters of the last two iterations, d=max(|par.final-par_old|). |

`loglike` |
loglikelihood evaluated at the parameter estimates. |

`AIC` |
Akaike Information Criterion. |

`BIC` |
Bayesian Information Criterion. |

`converged` |
logical indicating whether the current procedure converged or not. |

Haiyan Liu and Zhiyong Zhang

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