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Hello every body
I have 40 patients divided in 2 groups, 25 patients with preventable adverse events (AE) and 15 with non preventable AE.
I want to study the relationship between the evitability caracter of AE and the caracteristics of these patients.
I did a logistic regression, my problem is the power (puissance à posteriori ) of the study. I suppose it'll be very low because of my low sample size
How can I calculate it in SPSS ? which parameters I need ?
Thanks in advance
NB: Excuse my english (I try to improve it)
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