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PIRLS: Poisson Iteratively Reweighted Least Squares Computer Program for Additive, Multiplicative, Power, and Non-linear Models

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  • Peterson, Leif E.

Abstract

A computer program to estimate Poisson regression coefficients, standard errors, Pearson x2 and deviance goodness of fit (and residuals), leverages, and Freeman-Tukey, standardized, and deletion residuals for additive, multiplicative, power, and non-linear models is described. Data used by the program must be stored and input from a disk file. The output file contains an optional list of the input data, observed and fitted count data (deaths or cases), coefficients, standard errors, relative risks and 95% confidence intervals, variance-covariance matrix, correlation matrix, goodness of fit statistics, and residuals for regression diagnostics.

Suggested Citation

  • Peterson, Leif E., 1997. "PIRLS: Poisson Iteratively Reweighted Least Squares Computer Program for Additive, Multiplicative, Power, and Non-linear Models," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 2(i05).
    • Handle: RePEc:jss:jstsof:v:002:i05
    DOI: http://hdl.handle.net/10.18637/jss.v002.i05
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