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Logistisk regression

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u n i v e r s i t y o f c o p e n h a g e n<br />

Regressionsanalyse<br />

d e p a r t m e n t o f b i o s t a t i s t i c s<br />

Formålet med en <strong>regression</strong>sanalyse er at beskrive fordelingen af én<br />

responsvariabel som en funktion af en eller flere forklarende variable<br />

Typen af respons-variablen bestemmer <strong>regression</strong>smodellen<br />

Respons<br />

Kvantitativ (kontinuert)<br />

Binær (0/1)<br />

Levetid (> 0, censurering)<br />

Model<br />

lineær <strong>regression</strong><br />

logistisk <strong>regression</strong><br />

Cox (Poisson) <strong>regression</strong>.<br />

og fortolkningen af effekten af en forklarende variabel<br />

Regressionsmodel<br />

Lineær<br />

<strong>Logistisk</strong><br />

Cox (Poisson)<br />

Effect<br />

forskelle mellem middelværdier<br />

odds-ratio (OR), ln(OR)<br />

rate / hazard ratio, ln(rate ratio).<br />

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