Associations by cardiovascular risk factors with chronic low back pain among Koreans aged 20 to 89 years^a.

Logistic regression analysis. Odds ratios (OR) and 95% confidence intervals (CI). aSubjects with no history of cardiovascular disease, cerebrovascular disease or intake of medication for hyperlipemia, hypertension or diabetes. bFollowing international standards, comparison between the upper half of the high risk group and the upper and lower halves of the normal group. cAdjusted for age, education, household income, occupation, BMI, alcohol drinking and exercise habits.