Beste mensen,
Ik heb aanstaande vrijdag een tentamen van het vak analytical epidemiology en zou graag willen weten hoe onderstaande opgave opgelost kan worden.
Alvast bedankt!
A group of 742 men was studied in order to evaluate risk factors of cardiovascular disease (CVD). In a logistic regression model, parameter estimates were calculated of determinants of history of CVD (0=no/1=yes):
Parameter Standard
Variable Estimate Error
INTERCPT -13.2
AGE (years) 0.12 0.044
CHOLESTEROL (mg/dL) 0.0070 0.0025
SYSTOLIC BLOOD PRESSURE (mmHg) 0.0068 0.0060
SMOKING (number of cigarettes per day) 0.422 0.103
DEVIANT ECG (0=no/1=yes) 0.721 0.401
a) Calculate the Odds Ratio and 95% confidence interval for presence of a deviant ECG.
Is the association between a deviant ECG an CVD statistically significant?
b) Calculate the Odds Ratio (no confidence interval) for a 10 years higher age.
Puzzels