Table 4.

Multivariate screening for predictor variables for selected diseases by logistic regression*

	Predictors (OR, 95% CI)†
Predictor variable	Hypertension	COPD	Psychosomatic symptoms‡
Age (years)	1.07 (1.02-1.12) P = 0.004	1.01 (0.97-1.05) ns	1.01 (0.99-1.03) ns
Sex:
male (referent)	1.00*	1.00	1.00
female	4.53 (1.23-16.66) P = 0.023	0.46 (0.16-1.31) ns	2.84 (1.61-5.02) P<0.001
Region:
Međimurje (referent)	1.00	1.00	1.00
Baranja	2.70 (0.64-11.43) ns	5.55 (1.15-25.88) P = 0.033	2.27 (1.14-4.49) P = 0.019
Education (years)	1.09 (0.93-1.30) ns	0.77 (0.63-0.94) P = 0.010	1.00 (0.92-1.09) ns
Income:
none or social aid (referent)	1.00	1.00	1.00
temporary or permanent jobs	0.47 (0.12-1.89) ns	2.17 (0.72-6.53) ns	0.91 (0.51-1.61) ns
Health insurance:
not insured (referent)	1.00	1.00	1.00
insured	1.49 (0.52-4.23) ns	4.32 (1.46-12.77) P = 0.008	0.61 (0.36-1.03) ns
Migration status:
autochthonous (referent)	1.00	1.00	1.00
immigrant	2.55 (0.59-10.82) ns	1.56 (0.40-6.08) ns	1.73 (0.81-3.69) ns
Smoking status (pack-years)§	1.01 (0.98-1.03) ns	1.02 (0.99-1.04) ns	1.01 (0.99-1.03) ns
Total number of children	1.02 (0.86-1.34) ns	1.03 (0.82-1.28) ns	1.02 (0.90-1.16) ns
Living children (%)	1.02 (0.98-1.05) ns	0.99 (0.97-1.01) ns	1.01 (0.99-1.03) ns
Body mass index	1.16 (1.10-1.25) P<0.001	0.96 (0.88-1.04) P = ns	0.99 (0.96-1.04) ns

*Coding: 1 – no disease, 2 – disease.

†Abbreviations: OR – odds ratio; CI – confidence intervals; COPD – chronic obstructive pulmonary disease; ns – not significant.

‡Stomach pain, frequent headaches, and anxiety/insomnia.

§Pack-years were counted as the number of cigarettes smoked daily multiplied by years of smoking and divided by 20.