Table 3.
Population-attributable risk for stroke by age group* and sex
| Population-attributable risk (%) |
||||
|---|---|---|---|---|
| Smoking† | Obesity‡,§ | Hypertension§ | Diabetes§ | |
| Male | ||||
| Young age | 45.1 | 4.0 | 18.0 | 8.6 |
| Middle age | 37.4 | 1.8 | 29.0 | 19.1 |
| Old age | 16.7 | 8.7 | 22.8 | 14.4 |
| Female | ||||
| Young age | 5.9 | 2.8 | 14.3 | 6.6 |
| Middle age | 7.7 | -0.1 | 34.1 | 16.9 |
| Old age | –1.0 | -0.8 | 24.4 | 9.6 |
OR, odds ratio.
Age group was defined as follows: young age, 19–54 years (for smokers, 19–44 years); middle age, 55–74 years (for smokers, 45–64 years); old age, ≥75 years (for smokers, ≥65 years);
Population-attributable risk (PAR) of smoking was quoted from Park et al. [32];
Obesity was defined as body mass index >30 kg/m2 according to the World Health Organization classification;
PAR was calculated using the following formula: PAR = Pg (OR – 1)/[1 + Pg (OR – 1)], where Pg represents prevalence of risk factors in the general population, estimated from the population ≥19 years of age in the 3th, 4th, and 5th Korea National Health and Nutrition Examination Survey (KNHANES) database (2005–2012) for obesity, and the 5th and 6th KNHANES database (2010–2014) for hypertension and diabetes.