Statistical Analyses
Baseline characteristics of the study population were
evaluated for men and women separately. Prevalence
of lifestyle risk factors were investigated in the study
population. Clustering of two or more risk factors was
studied on the basis of ratios of observed and expected
prevalence of one, two, three, and four simultaneously
occurring risk habits. The expected proportion was calculated by multiplying the individual probabilities of
each risk factor based on their occurrence in the study
population for men and women separately. The difference between the observed and expected (O/E) was
calculated. The prevalence odds ratio (POR) was used
to calculate clustering of two risk factors, adjusted for
age, education, and gender. The POR presents the estimation of the relative odds of having a certain risk
factor given the prevalence of another risk factor and is
calculated as