Prevalence and associated factors of facial palsy and lifestyle characteristics: Data from the Korean National Health and Nutrition Examination Survey 2010-2012

Objectives: To report the nationwide prevalence of facial palsy (FP) of grade III or worse in the House. Brackmann (H.B) grading system in South Korea and assess the associated factors. Design: Cross-sectional analysis of a nationwide health survey. Settings: South Korea. Methods: We obtained data from the 2010 to 2012 Korea National Health and Nutrition Examination Surveys, which were cross-sectional surveys of the South Korean civilian population living in households and aged .1 year (N=23 533). A field survey team performed interviews, physical examinations and laboratory tests. Facial expression was evaluated based on the H.B grading system. Results: Among the population aged .1 year, the prevalence of FP of grade III or worse in the H.B grading system was 0.12% (95% CI 0.07% to 0.17%). FP was more prevalent in women (p=0.01) and the prevalence rate increased with age (p<0.001). In participants aged .19 years, age, female gender, history of cardiovascular disease and the serum total cholesterol level were associated with FP in a multivariable analysis. In the evaluation of lifestyle, the individuals with FP had a higher rate of depressive mood and were more restricted in their daily activities. Conclusions: Considering the significance of facial expression in psychosocial activities, public acknowledgement and further intervention are required to support patients with this distressing condition.