Table 1.
Trends in age-standardized smoking prevalence by gender and age group according to income tertile
| 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
(2009-2010) |
(2011-2012) |
(2013-2014) |
(2015-2016) |
|||||||||
| Men (age, y) | ||||||||||||
| 30-59 | ||||||||||||
| Income tertile (KNHANES) | ||||||||||||
| I (lowest tertile) | 57.4 (53.9, 60.8) | 56.6 (53.1, 60.1) | 53.0 (49.2, 56.7) | 47.0 (43.0, 50.9) | ||||||||
| II | 51.6 (48.2, 55.0) | 48.7 (44.7, 52.7) | 51.2 (47.3, 55.0) | 44.2 (40.4, 48.0) | ||||||||
| III (highest tertile) | 46.2 (43.0, 49.4) | 46.0 (41.8, 50.2) | 44.7 (40.8, 48.7) | 40.1 (36.2, 43.9) | ||||||||
| Income tertile (KCHS) | ||||||||||||
| I (lowest tertile) | 58.6 (57.7, 59.5) | 56.1 (55.1, 57.0) | 55.4 (54.5, 56.4) | 55.9 (55.0, 56.8) | 54.8 (53.9, 55.8) | 54.4 (53.4, 55.3) | 50.9 (50.0, 51.9) | |||||
| II | 53.4 (52.5, 54.3) | 51.6 (50.7, 52.5) | 52.1 (51.2, 53.0) | 50.9 (50.0, 51.8) | 51.2 (50.3, 52.1) | 48.8 (47.9, 49.7) | 45.2 (44.2, 46.1) | |||||
| III (highest tertile) | 48.0 (47.2, 48.9) | 47.2 (46.3, 48.1) | 45.8 (45.0, 46.7) | 46.2 (45.4, 47.1) | 45.5 (44.6, 46.3) | 44.9 (44.0, 45.8) | 42.2 (41.3, 43.1) | |||||
| Income tertile (SSSK) | ||||||||||||
| I (lowest tertile) | 58.9 (57.2, 60.7) | 58.1 (56.1, 60.0) | 55.5 (53.5, 57.4) | 55.5 (53.4, 57.5) | 51.3 (49.2, 53.5) | |||||||
| II | 54.8 (53.1, 56.5) | 53.5 (51.7, 55.4) | 51.7 (49.6, 53.7) | 51.0 (49.0, 53.0) | 46.1 (44.0, 48.1) | |||||||
| III (highest tertile) | 49.0 (47.3, 50.8) | 44.6 (42.7, 46.5) | 46.1 (44.1, 48.0) | 44.7 (42.7, 46.8) | 41.9 (39.8, 44.0) | |||||||
| ≥60 | ||||||||||||
| Income tertile (KCHS) | ||||||||||||
| I (lowest tertile) | 33.2 (31.8, 34.6) | 31.8 (30.5, 33.1) | 30.5 (29.1, 31.9) | 30.3 (28.9, 31.6) | 28.8 (27.6, 30.1) | 28.5 (27.1, 29.9) | 25.6 (24.3, 26.9) | |||||
| II | 30.5 (29.1, 31.8) | 27.4 (26.2, 28.6) | 27.0 (25.8, 28.2) | 26.4 (25.1, 27.6) | 25.9 (24.8, 27.1) | 25.5 (24.4, 26.6) | 22.8 (21.7, 23.9) | |||||
| III (highest tertile) | 27.0 (25.8, 28.2) | 24.8 (23.6, 25.9) | 24.4 (23.3, 25.5) | 23.8 (22.6, 24.9) | 21.3 (20.3, 22.4) | 22.3 (21.3, 23.3) | 19.9 (18.9, 20.8) | |||||
| Income tertile (SSSK) | ||||||||||||
| I (lowest tertile) | 36.2 (33.6, 38.8) | 32.6 (29.7, 35.4) | 28.8 (26.2, 31.5) | 28.0 (25.3, 30.7) | 23.9 (21.2, 26.7) | |||||||
| II | 37.3 (33.4, 41.2) | 31.7 (28.0, 35.3) | 28.6 (25.3, 31.9) | 26.4 (23.9, 28.9) | 22.8 (20.6, 24.9) | |||||||
| III (highest tertile) | 31.8 (29.0, 34.7) | 29.3 (26.5, 32.1) | 21.1 (18.6, 23.7) | 24.5 (21.8, 27.3) | 21.2 (18.4, 24.0) | |||||||
| Women (age, y) | ||||||||||||
| 30-59 | ||||||||||||
| Income tertile (KNHANES) | ||||||||||||
| I (lowest tertile) | 10.7 (8.7, 12.8) | 10.9 (8.8, 13.0) | 9.0 (7.1, 10.9) | 9.3 (7.2, 11.5) | ||||||||
| II | 5.0 (3.6, 6.3) | 5.3 (3.7, 6.9) | 5.6 (4.2, 7.1) | 5.7 (4.1, 7.3) | ||||||||
| III (highest tertile) | 4.1 (2.8, 5.4) | 4.2 (2.6, 5.8) | 3.4 (2.0, 4.7) | 3.5 (2.2, 4.8) | ||||||||
| Income tertile (KCHS) | ||||||||||||
| I (lowest tertile) | 5.4 (5.0, 5.8) | 4.9 (4.5, 5.3) | 4.8 (4.4, 5.2) | 4.9 (4.5, 5.3) | 5.1 (4.7, 5.5) | 4.9 (4.5, 5.3) | 5.4 (5.0, 5.8) | |||||
| II | 3.2 (2.9, 3.5) | 3.2 (2.9, 3.5) | 2.9 (2.6, 3.2) | 2.8 (2.5, 3.0) | 2.9 (2.6, 3.1) | 2.9 (2.7, 3.2) | 2.6 (2.3, 2.9) | |||||
| III (highest tertile) | 1.9 (1.7, 2.1) | 2.3 (2.1, 2.6) | 2.1 (1.9, 2.3) | 2.2 (1.9, 2.4) | 2.1 (1.9, 2.4) | 2.4 (2.1, 2.7) | 2.5 (2.2, 2.8) | |||||
| Income tertile (SSSK) | ||||||||||||
| I (lowest tertile) | 4.2 (3.5, 4.9) | 3.9 (3.1, 4.7) | 5.7 (4.9, 6.6) | 4.6 (3.7, 5.4) | 4.1 (3.3, 5.0) | |||||||
| II | 2.1 (1.6, 2.6) | 2.6 (2.0, 3.2) | 4.3 (3.4, 5.2) | 3.4 (2.7, 4.1) | 2.8 (2.1, 3.6) | |||||||
| III (highest tertile) | 1.9 (1.5, 2.4) | 2.0 (1.4, 2.5) | 2.1 (1.5, 2.7) | 2.1 (1.5, 2.7) | 2.5 (1.8, 3.1) | |||||||
| ≥60 | ||||||||||||
| Income tertile (KCHS) | ||||||||||||
| I (lowest tertile) | 5.3 (4.7, 5.9) | 5.1 (4.5, 5.6) | 4.9 (4.4, 5.5) | 4.6 (4.1, 5.1) | 3.8 (3.3, 4.3) | 3.8 (3.3, 4.2) | 3.4 (2.9, 3.9) | |||||
| II | 4.1 (3.7, 4.6) | 3.6 (3.1, 4.0) | 3.4 (2.9, 3.9) | 3.1 (2.6, 3.5) | 3.0 (2.6, 3.4) | 2.7 (2.3, 3.1) | 2.1 (1.8, 2.5) | |||||
| III (highest tertile) | 3.5 (3.1, 3.9) | 3.0 (2.6, 3.4) | 2.8 (2.4, 3.2) | 2.6 (2.3, 3.0) | 2.3 (2.0, 2.6) | 2.5 (2.2, 2.9) | 1.9 (1.6, 2.2) | |||||
| Income tertile (SSSK) | ||||||||||||
| I (lowest tertile) | 3.6 (2.5, 4.6) | 2.9 (1.7, 4.0) | 2.5 (1.5, 3.4) | 2.4 (1.5, 3.3) | 2.2 (1.3, 3.1) | |||||||
| II | 4.9 (3.8, 6.1) | 4.2 (3.2, 5.2) | 3.6 (2.6, 4.5) | 2.9 (2.0, 3.9) | 2.3 (1.6, 3.0) | |||||||
| III (highest tertile) | 3.0 (2.1, 3.9) | 2.5 (1.7, 3.4) | 2.0 (1.3, 2.7) | 2.3 (1.3, 3.2) | 1.7 (1.0, 2.5) | |||||||
Values are presented prevalence % (95% confidence interval).
Data from the Korea National Health and Nutrition Examination Survey (KNHANES), the Korea Community Health Survey (KCHS), and the Social Survey of Statistics Korea (SSSK).