The purpose of this study was to analyze existence of active senior and their sodium intake using the 7th Korea National Health and Nutrition Survey. The samples used for this study were 1,336 males and 1,857 females older than age 45. We used the K-means cluster analysis to distinguish the elderly and one-way analysis of variance (ANOVA) to compare the means statistically among the groups. The analysis confirmed the existence of active seniors and showed different characteristics from other clusters. Also, the sodium intake in active seniors varies with other clusters depending on gender, economic status, social participation and health. In conclusion to reduce the unnecessary social cost of health deterioration of the elderly caused by aging, it is desirable to implement a class-specific policy based on the results of this study.

Abstract
서 론
연구대상 및 방법
    1. 연구대상자
    2. 연구방법
    3. 통계방법
결과 및 고찰
    1. 인구사회학적 특성
    2. Active senior 존재 여부
    3. 계층별 나트륨 섭취
요약 및 결론
References

• 이재현(단국대학교 환경자원경제학과) | Jae-Hyun Rhee (Major in Dept. of Environmental and Resource Economics, Dankook University)
• 양성범(단국대학교 환경자원경제학과) | Sung-Bum Yang (Dept of Environmental and Resource Economics, Dankook University) Corresponding author