Prevalence of Sarcopenia in the Korean Woman Based on the Korean National Health and Nutritional Examination Surveys.

BACKGROUND The criteria for defining sarcopenia vary among studies and confusion has arisen when defining the cutoff value. As a result, the prevalence of sarcopenia differs markedly depending on the definition. This study used the Asian Working Group for Sarcopenia (AWGS) definition to determine the prevalence of sarcopenia among Korean women. METHODS This study was based on data obtained from the 2008 to 2011 Korean National Health and Nutrition Examination Surveys IV and V. We used the AWGS recommended cutoff value of 5.4 kg/m(2) to determine the prevalence of sarcopenia in Korean women. RESULTS The prevalence rates of sarcopenia using a cutoff value of 5.4 kg/m(2) were 385 (19.5%) in women in their 50s, 286 (16.6%) in women in their 60s, 293 (23.7%) in women in their 70s, and 91 (30.8%) in women ≥80 years. The prevalence rates of sarcopenia were 307 (19.0%) in women 65 to 74 years, 194 (27.4%) in women 75 to 84 years, and 32 (40.5%) in women ≥85 years. The overall prevalence among women >50 years was 20.2%. The prevalence of sarcopenia in women >65 years was 22.1%. CONCLUSIONS The prevalence of sarcopenia among Korean women was within the range of values of previous research about sarcopenia. Furthermore, using 5.4 kg/m(2) as the cutoff value was useful to compare various studies about sarcopenia in Koreans.