Table 2. Distribution of overall age-standardized smoking prevalence, smoking prevalence by income quintiles and interquintile income gaps in smoking prevalence, findings for 245 local districts using the NHSD and the CHS in Korea, 2009–2014.
| Variables | NHSD, 2009–2014 | CHS, 2009–2014 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Median | SD | Min | Max | IQR | Median | SD | Min | Max | IQR | ||
| Men | Overall | 36.9% | 3.1%p | 26.0% | 44.1% | 3.6%p | 42.9% | 3.8%p | 28.1% | 51.5% | 4.7%p |
| Income Q1 | 41.3% | 3.0%p | 31.5% | 49.0% | 3.3%p | 47.5% | 4.3%p | 33.3% | 57.5% | 5.5%p | |
| Income Q2 | 39.7% | 3.2%p | 28.0% | 46.5% | 3.2%p | 44.6% | 4.5%p | 29.1% | 56.5% | 5.9%p | |
| Income Q3 | 37.2% | 3.6%p | 24.7% | 45.9% | 4.5%p | 42.4% | 4.8%p | 26.6% | 54.0% | 6.4%p | |
| Income Q4 | 34.1% | 3.4%p | 20.4% | 42.8% | 4.1%p | 40.6% | 4.7%p | 25.5% | 52.9% | 5.9%p | |
| Income Q5 | 31.6% | 3.2%p | 19.4% | 39.3% | 3.9%p | 37.8% | 4.7%p | 25.3% | 51.2% | 6.3%p | |
| Q1–Q5 | 9.4%p | 2.1%p | 4.0%p | 19.0%p | 2.6%p | 9.4%p | 4.6%p | −1.8%p | 23.9%p | 5.9%p | |
| Women | Overall | 2.8% | 1.0%p | 0.8% | 7.4% | 1.3%p | 3.2% | 1.1%p | 0.7% | 7.7% | 1.5%p |
| Income Q1 | 4.2% | 1.4%p | 1.1% | 10.1% | 1.7%p | 5.2% | 2.1%p | 0.8% | 13.4% | 2.8%p | |
| Income Q2 | 3.0% | 1.1%p | 0.7% | 7.5% | 1.6%p | 3.3% | 1.6%p | 0.1% | 9.6% | 2.2%p | |
| Income Q3 | 2.7% | 1.0%p | 0.8% | 7.1% | 1.4%p | 2.7% | 1.3%p | 0.1% | 7.0% | 1.7%p | |
| Income Q4 | 2.2% | 0.9%p | 0.6% | 6.9% | 1.1%p | 2.2% | 1.2%p | 0.1% | 7.4% | 1.7%p | |
| Income Q5 | 1.9% | 0.8%p | 0.5% | 5.3% | 1.0%p | 1.9% | 1.1%p | 0.2% | 6.5% | 1.3%p | |
| Q1–Q5 | 2.3%p | 0.9%p | 0.0%p | 5.6%p | 1.1%p | 3.1%p | 1.9%p | −1.1%p | 9.9%p | 2.3%p | |
NHSD = National Health Screening Database, CHS = Community Health Survey, SD = standard deviation, IQR = interquartile range.