1. Statistics Korea. Population projections by province: 2015-2065 [Internet]. Daejeon: Statistics Korea;[cited 2017 Apr 17]. Available from:. http://www.index.go.kr/potal/main/Each-DtlPageDetail.do?idx_cd=1009.
2. Park YS. Multi-dimensional poverty in 67.3% of elderly [Internet]. Seoul: Yonhapnews;c2016. [cited 2017 Apr 17]. Available from:. http://www.yonhapnews.co.kr/bulletin/2016/01/22/0200000000AKR20160122153700017.HTML?in-put=1195m/.
3. Kang SO, Ha KS. Relations between the middle aged’s perception of successful aging and their preparations for the old age. Journal of Digital Convergence. 2013; 11(12):121–144. https://doi.org/10.14400/jdpm.2013.11.12.121.
Article
4. National Pension Research Institute. 2016 Economic life and retirement preparation in middle old age [Internet]. Jeonju: National Pension Research Institute;[cited 2017 Apr 17]. Available from:. http://institute.nps.or.kr/jsppage/research/re-sources/resources_01.jsp?fid=32.
5. Bae KH. A study on preparation for old age of adulthood [master’s thesis]. Seoul: Dongguk University;1988. p. 1–60.
6. In EY, Kim CW. The effects of perceived successful aging of the lower-income middle-aged on preparation for later time of their lives. Korean Journal of Social Welfare Research. 2015; 44:25–52. https://doi.org/10.17997/SWRY.44.1.2.
Article
7. Jeong KH, Park SY. The effect of family care giving-burden on middle-aged people’s preparation for old age: The mediating effect of self-efficacy. Journal of Welfare for the Aged. 2014; 63:115–147.
8. Son JY, Han GH. The effects of life events on marital relationships of Korean baby boomer couples: An application of the actor-partner interdependence model. Journal of the Korean Gerontological Society. 2015; 35(2):491–507.
9. Ko MS, Kim SH. Influences of the current health status upon health-related preparation behavior for later life of adult: Focusing on the mediating effect of health expectation in later life. Korean Public health Research. 2013; 39(2):63–75.
10. Lim HJ. The correlation between health condition and preparation for the old-aged in the middle-aged [master’s thesis]. Seoul: Yonsei University;2002. p. 1–52.
11. Jung YO, Oh HS. The effects of social support, self-efficacy and perceived health status on aging anxiety of the middle-aged women. Journal of Korean Public Health Nursing. 2016; 30(1):30–41. https://doi.org/10.5932/JKPHN.2016.30.1.30.
Article
12. Sherer M. Maddux JE, Mercandante B, Prentice-dunn S, Jacobs B, Rogers RW. The self-efficacy: Construction and validation. Phychological Reports. 1982; 51(2):663–671. https://doi.org/10.2466/pr0.1982.51.2.663.
13. Hyun KJ, Kim YS. Content analysis of reasons for marital satisfaction: Comparison of sources of marital satisfaction among men and women. Korean Journal of Social Welfare. 2002; 49(5):225–263.
14. Kim YJ, Choi YH. The effects of marital satisfaction on the later life preparation of the middle aged couples. Journal of Welfare for the Aged. 2004; 24:197–213.
15. Jang MY, Jung EY, Kim EY. Effects of life satisfaction, preparation for old age, aging anxiety on the depression in middle aged men. Journal of the Korean Data Analysis Society. 2014; 16(1):493–505.
16. Kenny DA. Models of non-independence in dyadic research. Journal of Social and Personal Relationships. 1996; 13(2):279–294. https://doi.org/10.1177/0265407596132007.
Article
17. Hyun KJ. The role of independent and interdependent self-construals in marital satisfaction among men and women. Korean Journal of Social Welfare. 2004; 56(4):239–268.
18. Cho CY, Song MY, Lee KS. The decision factor on thinking against their old age of the middle generation. Journal of Welfare for the Aged. 2009; 43:135–156.
19. Maier CA, Priest JB. Perceived fairness, marital conflict, and depression: A dyadic data analysis. The American Journal of Family Therapy. 2016; 44(2):95–109. https://doi.org/10.1080/01926187.2016.1145083.
Article
20. Erol RY, Orth U. Actor and partner effects of self-esteem on relationship satisfaction and the mediating role of secure attachment between the partners. Journal of Research in Personality. 2013; 47(1):26–35. https://doi.org/10.1016/j.jrp.2012.11.003.
Article
21. Kang HS, Kim YH. Actor and partner effect of couple’s personality on marital satisfaction. Korean Journal of Counseling. 2012; 13(6):2861–2880. https://doi.org/10.15703/kjc.13.6.201212.2861.
22. Park WJ, Kim BS. Actor and partner effects of couples’ meta-mood and emotional expressivity on marital satisfaction. Korean Journal of Counseling. 2013; 14(5):2945–2967. https://doi.org/10.15703/kjc.14.5.201310.2945.
23. Hwang SS, Kim YH. Actor and partner effects of marital commitment on marital satisfaction. Journal of Korean Family Relations. 2013; 18(3):45–61.
24. Ko SJ, Shin SH. Effects of dementia knowledge, self-efficacy and depression on dementia preventive behavior in elderly couples: Dyadic data analysis. Journal of Korean Academy Nursing. 2013; 43(2):276–286. https://doi.org/10.4040/jkan.2013.43.2.276.
Article
25. Cook WL, Kenny DA. The actor-partner interdependence model: A model of bidirectional effects in developmental studies. International Journal of Behavioral Development. 2005; 29(2):101–109. https://doi.org/10.1080/01650250444000405.
26. Song TM, Kim GS. Structural equation modeling for health & welfare research. Seoul: Hannarae Publishing Co;2012. p. 33–35.
27. Lim KH. A study on shifting nurses’ health conditions and job satisfaction [master’s thesis]. Seoul: Hanyang University;2007. p. 1–44.
28. Roach AJ, Frazier LP, Bowden SR. The marital satisfaction scale: Development of a measure for intervention research. Journal of Marriage and the Family. 1981; 43(3):537–546. https://doi.org/10.2307/351755.
Article
29. Choi KR. A study on the sex-role attitude and marital satisfaction of husbands and wives. Family and Environment Research. 1984; 22(2):91–102.
30. Oh HS. Health promoting behaviors and quality of life of Korean women with arthritis. Journal of Korean Academy of Nursing. 1993; 23(4):617–630.
Article
31. Park SJ, Kim HG. A study on the quality of life of elderly people with dementia and the environmental factor of facilities. Journal of the Korean Gerontological Society. 2009; 29(4):1361–1381.