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Logistisk regression

Logistisk regression

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 />

Beskrivelse af alderseffekten<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 />

Konfidensintervaller<br />

> glm1a$coef<br />

(Intercept)<br />

age<br />

-19.989374 1.515431<br />

> confint(glm1)<br />

Waiting for profiling to be done...<br />

2.5 % 97.5 %<br />

(Intercept) -24.38353 -16.36677<br />

age 1.23980 1.85004<br />

> # OR incl CI<br />

> round( c(exp(glm1a$coef[-1]), exp(confint(glm1a)[-1,])),2 )<br />

Waiting for profiling to be done...<br />

age 2.5 % 97.5 %<br />

4.55 3.45 6.36<br />

><br />

Når alderen øges med et år, stiger log-odds med 1.51 (1.24-1.85).<br />

Når alderen øges med et år, øges odds med en faktor 4.55<br />

(3.45-6.36).<br />

Interceptet a = −19.99 er log-odds for en pige på 0 år (!).<br />

35 / 42

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