Fig 1.
Overall chronic laryngitis prevalence by age group.
Table 1.
Analysis of factors potentially associated with chronic laryngitis (n = 21116).
Fig 2.
Trends in chronic laryngitis and ambient particulate matter with an aerodynamic diameter less than 10 μm (PM10) in 2008–2012, Korea.
Table 2.
Logistic regression models of PM10 for chronic laryngitis (n = 21116).