pISSN 1225-388X
eISSN 2093-7784
Trends in prevalence rate (%) and prevalence ratio of self-rated poor oral health by household income level in Korean adults
| Classification | 4th wave (2007-2009) | 5th wave (2010-2012) | 6th wave (2013-2015) | 7th wave (2016-2018) | 8th wave (2019-2020) |
|---|---|---|---|---|---|
| Prevalence rate (standard error) | |||||
| Total | |||||
| Crude | 48.5 (0.6) | 46.6 (0.6) | 43.5 (0.5) | 38.6 (0.8) | 36.0 (0.8) |
| Age std. | 48.1 (0.6) | 45.8 (0.6) | 42.3 (0.6) | 33.5 (0.8) | 34.1 (0.8) |
| Income level: age std. | |||||
| I (lowest) | 51.6 (1.2) | 49.6 (1.2) | 47.8 (1.2) | 42.2 (1.5) | 39.2 (1.5) |
| II | 51.3 (1.1) | 47.1 (1.1) | 45.1 (1.2) | 36.3 (1.3) | 38.6 (1.4) |
| III (middle) | 49.0 (1.1) | 46.6 (1.2) | 42.9 (1.0) | 34.4 (1.3) | 34.0 (1.5) |
| IV | 45.4 (1.1) | 43.9 (1.2) | 39.4 (1.2) | 29.0 (1.2) | 31.7 (1.4) |
| V (highest) | 43.1 (1.1) | 41.0 (1.2) | 36.3 (1.1) | 26.0 (1.1) | 27.7 (1.3) |
| Prevalence difference of I vs V | 8.5 | 8.6 | 11.5 | 16.2 | 11.5 |
| Prevalence ratio | |||||
| Income level | |||||
| I (lowest) | 1.20 |
1.21 |
1.30 |
1.30 |
1.34 |
| II | 1.19 |
1.16 |
1.25 |
1.25 |
1.29 |
| III (middle) | 1.13 |
1.14 |
1.18 |
1.18 |
1.18 |
| IV | 1.06NS | 1.07 |
1.09 |
1.09 |
1.11NS |
| V (highest) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
NS