Cardiovascular risk factors associated with SCD in a multivariate model in four population-based cohorts.

BMI = body mass index, BP = blood pressure, CHD = coronary heart disease, CI = confidence interval, HDL = high-density lipoprotein cholesterol, HR = hazard ratio (in Cox regression), I2 = measure of heterogeneity between studies, SCD = sudden cardiac death, TC = total cholesterol. *Random-effects meta-analysis was used because of significant heterogeneity between studies. †Leisure-time physical activity (moderate/high vs. low).