ANOVA	Analysis of Variance
AUC	Area under the receiver operating characteristic curve
BG	Bulgaria
BMI	Body mass index
CI	Confidence interval
EHIS	European Health Interview Survey
EU	European Union
FI	Finland
IASP	International Association for the Study of Pain
LASSO	Least Absolute Shrinkage and Selection Operator
NO	Norway
OR	Odds ratio
OSS-3	Oslo Social Support Scale (3-item)
RS	Republic of Serbia
SD	Standard deviation