S-PLUS : Copyright (c) 1988, 1996 MathSoft, Inc.
S : Copyright AT&T.
Version 3.4 Release 1 for Sun SPARC, SunOS 5.3 : 1996 
Working data will be in .Data 
phi = 3.596 

rho = 0.23 

               beta se.model se.scale se.sandwich se.empirical 
(Intercept) -1.5196   0.2405   0.4561      0.4511       0.4388
       iron -0.7708   0.0830   0.1575      0.1532       0.1700
      iron0  0.5056   0.1517   0.2876      0.2842       0.2836


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Call: glm(formula = cbind(y, n - y) ~ iron + iron0, family = binomial, data = rats)
Deviance Residuals:
       Min        1Q     Median       3Q      Max 
 -4.932802 -1.130846 -0.1433674 1.431611 4.438619

Coefficients:
                 Value Std. Error   t value 
(Intercept) -1.5196252  0.2404516 -6.319880
       iron -0.7707906  0.0830197 -9.284430
      iron0  0.5056392  0.1514921  3.337726

(Dispersion Parameter for Binomial family taken to be 1 )

    Null Deviance: 482.3326 on 54 degrees of freedom

Residual Deviance: 188.1113 on 52 degrees of freedom

Number of Fisher Scoring Iterations: 4 


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Call: glm(formula = cbind(y, n - y) ~ iron + iron0, family = quasi(link = logit, 
	variance = "mu(1-mu)"), data = rats)
Deviance Residuals:
       Min        1Q     Median       3Q      Max 
 -4.932802 -1.130846 -0.1433674 1.431611 4.438619

Coefficients:
                 Value Std. Error   t value 
(Intercept) -1.5196252  0.4559841 -3.332627
       iron -0.7707906  0.1574357 -4.895907
      iron0  0.5056392  0.2872844  1.760065

(Dispersion Parameter for Quasi-likelihood family taken to be 3.596202 )

    Null Deviance: 482.3326 on 54 degrees of freedom

Residual Deviance: 188.1113 on 52 degrees of freedom

Number of Fisher Scoring Iterations: 4 


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