JKAOH Journal of Korean Acadomy of Oral Health
pISSN 1225-388X eISSN 2093-7784

Table. 3.

Trends in prevalence rate (%) and prevalence ratio of chewing 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 28.9 (0.5) 24.2 (0.5) 20.9 (0.4) 19.7 (0.4) 18.3 (0.5)
Age std. 27.7 (0.4) 22.4 (0.4) 18.4 (0.4) 16.6 (0.3) 15.2 (0.4)
Income level: age std.
I (lowest) 32.5 (0.9) 27.0 (0.9) 23.5 (0.9) 22.9 (0.8) 21.0 (1.0)
II 31.0 (0.8) 23.0 (0.9) 20.2 (0.8) 17.6 (0.6) 16.4 (0.9)
III (middle) 29.7 (0.9) 22.1 (0.9) 18.0 (0.7) 16.0 (0.7) 13.9 (0.8)
IV 25.0 (0.8) 20.7 (0.9) 16.0 (0.7) 14.0 (0.7) 13.1 (0.7)
V (highest) 20.5 (0.8) 17.9 (0.8) 14.4 (0.7) 12.8 (0.6) 11.9 (0.8)
Prevalence difference of Ⅰ vs Ⅴ 12.0 9.1 9.1 10.1 9.1
Prevalence ratio
Income level
I (lowest) 1.57*** 1.51*** 1.62*** 1.74*** 1.76***
II 1.50*** 1.30*** 1.41*** 1.41*** 1.39***
III (middle) 1.45*** 1.25*** 1.28*** 1.27*** 1.15*
IV 1.21*** 1.16** 1.15* 1.12NS 1.09NS
V (highest) 1.00 1.00 1.00 1.00 1.00

NSP>0.05, *P<0.05, **P<0.01, ***P<0.001.

J Korean Acad Oral Health 2022;46:109~114 https://doi.org/10.11149/jkaoh.2022.46.3.109
© Journal of Korean Academy of Oral Health