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### Interpreting Poisson output in R [duplicate]

I am having some issues with interpreting the results from a Poisson log linear model done in R. I will give my thoughts and it would be great if somebody would be kind enough to expand on it. I just ...
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### intepreting Negative coefficients of Poisson model [duplicate]

i have fitted a Poisson regression to my claim frequency data. my predictor is make of vehicle. I have obtained the following result: ...
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### Interpreting estimates from generalized models in R [duplicate]

I'm using R to run some generalized linear models (GLM) and I want to interpret the estimates. If I use a GLM assuming Gaussian distribution with identity link, interpretation is easy: if the ...
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### How to interpret the resulting negative regression coefficient? [duplicate]

How to interpret the resulting negative Poisson's regression coefficient? I am investigating the effects of environmental factors on mortality. A negative regression coefficient means feedback (proves ...
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### Goodness of fit and which model to choose linear regression or Poisson

I need some advice regarding two main dilemmas in my research, which is a case study of 3 big pharmaceuticals and innovation. Number of patents per year is the dependent variable. My questions are ...
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### Statistical test in R for count data

I am struggling with using the correct test for count data in R. The dataset I have is the number of nymphs produced by three aphid species on wheat. So this is count data with one response variable (...
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### Interpreting Poisson regression coefficients

I'm having a little trouble interpreting regression coefficients from a Poisson model. Wooldridge, for example, says: "The Poisson coefficient implies that $\Delta_{pcnv}=.10$ reduces the expected ...
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### Poisson regression for binary data

I've been trying to read up on Poisson regression models, and it looks like it is possible to estimate such a model with a binary outcome. This has come up before on this site here (and somewhat here ...
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### How to interpret coefficients in a Poisson regression with interaction terms?

This question is a prolongation of this question: How to interpret coefficients in a Poisson regression? If we follow the (almost) exact same routine, but we add correlation between the variablese ...
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### How is the intercept calculated in a generalized linear model and why is it different from a linear model?

I have a set of count data that I have fitted both a linear model to and a Poisson generalized linear model. The mean of the raw data is 233.375 and the standard deviation 279.983. I have been ...
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### Incident rate ratios with log-transformed variables in Poisson regression

I'm in a bit of a mess with interpreting the output of a Poisson regression model with log-transformed predictors. The predictors are counts, and the log transforms them for the linear part of model. ...
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### Interpretation of Coefficient

In Poisson Regression, suppose we have the following regression equation: $\ln(E(Y_i|X_1)) = \beta_0+ \beta_{1}X_{1}$ where $Y$ is the number of heart attacks. Also suppose $X_1$ is a binary variable (...