Nothing

```
initial <- function(y, X, offset = NULL, type = "Poi", alpha = 1) {
if (type == "Poi"){
(GLM <- glm(y ~ -1 + X, offset = offset, family = poisson, x = TRUE))
GLMInt <- glm(y ~ X, offset = offset, family = poisson, x = TRUE)
}
if (type == "NegBin"){
offset.nb<-if(is.null(offset)) rep(0,length(y)) else offset
(GLM <- glm.nb(y ~ -1 + X + offset(offset.nb),
init.theta = alpha, x = TRUE))
GLMInt <- glm.nb(y ~ X + offset(offset.nb),
init.theta = alpha, x = TRUE)
}
if (type == "Bin"){
(GLM <- glm(y ~ -1 + X, offset = offset,
family = binomial(link = logit),
na.action = na.omit, x = TRUE))
GLMInt <- glm(y ~ X, offset = offset,
family = binomial(link = logit),
na.action = na.omit, x = TRUE)
}
list(beta = GLM$coefficients, y = y, X = X, alpha = GLM$theta, type = type,
null.deviance = GLMInt$null.deviance, df.null = GLMInt$df.null)
}
```

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