pISSN 1225-388X
eISSN 2093-7784
Trends in prevalence rate (%) and prevalence ratio of speaking discomfort 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 | 9.6 (0.3) | 7.3 (0.3) | 8.5 (0.3) | 6.9 (0.2) | 5.5 (0.3) |
| Age std. | 9.0 (0.2) | 6.4 (0.2) | 7.1 (0.2) | 5.5 (0.2) | 4.2 (0.2) |
| Income level: age std. | |||||
| I (lowest) | 12.0 (0.6) | 8.4 (0.5) | 10.2 (0.5) | 8.7 (0.5) | 6.8 (0.6) |
| II | 10.2 (0.5) | 6.3 (0.5) | 8.0 (0.5) | 6.1 (0.4) | 5.0 (0.5) |
| III (middle) | 8.6 (0.5) | 5.8 (0.4) | 6.6 (0.4) | 5.1 (0.4) | 3.2 (0.3) |
| IV | 7.5 (0.5) | 5.7 (0.5) | 5.7 (0.4) | 4.5 (0.4) | 3.4 (0.4) |
| V (highest) | 6.8 (0.5) | 5.2 (0.5) | 5.2 (0.4) | 3.4 (0.3) | 2.7 (0.4) |
| Prevalence difference of Ⅰ vs Ⅴ | 5.2 | 3.2 | 5.0 | 5.3 | 4.1 |
| Prevalence ratio | |||||
| Income level | |||||
| I (lowest) | 1.71 |
1.53 |
1.89 |
2.57 |
2.39 |
| II | 1.50 |
1.19NS | 1.54 |
1.87 |
1.79 |
| III (middle) | 1.28 |
1.13NS | 1.31 |
1.53 |
1.21NS |
| IV | 1.13NS | 1.11NS | 1.13NS | 1.30 |
1.22NS |
| V (highest) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
NS