How to do sample size calculation for a binary regression logistic model?

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Sample size calculation for multinomial logistic regression model?

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In order to run Multinomial Logistic Regression, is it required that the data be in the long format?

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Normality assumption for linear regression is The assumption of normality is whether for residual errors or predictor variavble?

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Mohamed A Elkoushy

The following program computes power, sample size, or minimum detectable odds ratio (OR) for logistic regression with a single binary covariate or two covariates and their interaction.

https://www.dartmouth.edu/~eugened/power-samplesize.php

Regards

Mehmet Sinan Iyisoy

Did you have a search? You can use GPower for this.

Marius K. Somda

Dear

I agree with Mohamed proposition