1. Statistical Center of Iran. Population and housing census. 2018; Available from: http://www.amar.org.ir/Default.aspx?1. Statistical Center of Iran. Population and housing census [Internet]. Iran: Statistical Center of Iran: 2018. Available from: http://www.amar.org.ir/Default.aspx?tabid=1190.
2. Eliopoulos C. Gerentological nursing. Phialdelphia: Lippincott Williams & Wilkins; 2010.
3. Rashedi V, Asadi-Lari M, Foroughan M, Delbari A, Fadayevatan R. Prevalence of disability in Iranian older adults in Tehran, Iran: a population-based study. Journal of Health and Social Sciences. 2016; 1(3): 251-62.
4. Khademi MJ, Rashedi V, Sajadi S, Gheshlaghi SM. Anxiety and loneliness in the Iranian older adults. International Journal of Psychology and Behavioral Sciences. 2015; 5(2): 49-52.
5. Darvishpour Kakhaki AD, Abed Saeidi ZH, Delavar A, Zakerin MS. Autonomy in the elderly: a phenomenological study. Hakim Research Journal. 2010; 12(4): 1-10. [Persian]
6. Rashedi V, Gharib M, Rezaei M, Yazdani AA. Social support and anxiety in the elderly of Hamedan, Iran. Archives of Rehabilitation. 2013; 14(2): 110-5. [Persian]
7. Burnston K, Johannesson M, Diderichsen F. Health related quality of life by disease and socioeconomic group in general population in Sweden. Health Policy. 2001; 55(1): 51-69.
8. Rashedi V, Asadi-Lari M, Foroughan M, Delbari A, Fadayevatan R. Mental health and pain in older adults: findings from urban HEART-2. Community Mental Health Journal. 2017; 53(6): 719-24.
9. Uchino BN, Holt-Lunstad J, Bloor LE, Campo RA. Aging and cardiovascular reactivity to stress: longitudinal evidence for changes in stress reactivity. Psychology and Aging. 2005; 20(1): 134-43.
10. Tajvar M, Grundy E, Fletcher A. Social support and mental health status of older people: a population-based study in Iran-Tehran. Aging & Mental Health. 2018;22(3):344-53.
11. Nabavi SH, Alipour F, Hejazi A, Rabani E, Rashedi V. Relationship between social support and mental health in older adults. Medical Journal of Mashhad University of Medical Sciences. 2014; 57(7): 841-6. [Persian]
12. Cobb S. Social support as a moderator of life stress. Psychosomatic Medicine. 1976; 38(5): 300-14.
13. Rashedi V, Rezaei M, Gharib M, Nabavi SH. Social support for the elderly: comparison between home and nursing home. Journal of North Khorasan University of Medical Sciences. 2013; 5(2): 351-6. [Persian]
14. Miller CA. Nursing for wellness in older adults theory and practice. Philadephia: Williams & Wilkins; 2003.
15. Gallagher LP, Trugli-Londrigan M. Community support:older adult's perceptions. Clinical Nursing Research. 2004; 13(1): 24-32.
16. Birditt KS, Antonucci TC, Tighe L. Enacted support during stressful life events in middle and older adulthood: An examination of the interpersonal context. Psychology and Aging. 2012; 27(3): 728-41.
17. Alipour F, Sajadi H, Forouzan A, Nabavi H, Khedmati E. The role of social support in the anxiety and depression of elderly. Salmand, Iranian Journal of Ageing. 2009; 4(1): 53-61. [Persian]
18. Goudarz M, Foroughan M, Makarem A, Rashedi V. Relationship between social support and subjective well-being in older adults. Salmand, Iranian Journal of Ageing. 2015; 10(3): 110-9. [Persian]
19. Krause N. Exploring age differences in the stress-buffering function of social support. Psychology and Aging. 2005; 20(4): 714-7.
20. Khosravi S. Epidemiology of mental disorders in among over 15 years old population in rural and urban area of Borujen, 1994. Journal of Shahrekord University Medical Sciences. 2003; 4(4): 31-9. [Persian]
21. Vaux A, Phillips J, Holly L, Thomson B, Williams D, Stewart D. The social support appraisals (SS-A) scale: Studies of reliability and validity. American Journal of Community Psychology. 1986;14(2):195-218.
22. Ebrahimi-ghavam S. Validity of locus of control, self-esteem and social support. Tehran: Islamic Azad University of Tehran; 1992.
23. Rajabi G, Bohrani M. Item factor analysis of the death anxiety scale. Journal of Psychology. 2002; 20(1): 331-43. [Persian]
24. Templer DI. The construction and validation of a death anxiety scale. The Journal of General Psychology. 1970; 82(2): 165-77.
25. Schumaker JF, Warren WG, Groth-Marnat G. Death anxiety in Japan and Australia. The Journal of Social Psychology. 1991; 131(4): 511-8.
26. Bengtson VL, Cuellar JB, Ragan PK. Stratum contrasts and similarities in attitudes toward death. Journal of Gerontology. 1977; 32(1): 76-88.
27. Masoudzadeh A, Setareh J, Mohammadpour RA, Modanloo Kordi M. A survey of death anxiety among personnel of a hospital in Sari. Journal of Mazandaran University of Medical Sciences. 2008; 18(67): 84-90. [Persian]
28. Aghajani M, Valiee S, Tol A. Death anxiety amongst nurses in critical care and general wards. Iran Journal of Nursing. 2011;23(67):59-68. [Persian]
29. Shapiro A, Keyes CL. Marital status and social well-being: are the married always better off?. Social Indicators Research. 2008; 88(2): 329-46.
30. Abdel-Khalek A. Love of life and death distress: Two separate factors. OMEGA-Journal of Death and Dying. 2007; 55(4): 267-78.
31. Fortner BV, Neimeyer RA. Death anxiety in older adults: a quantitative review. Death Studies. 1999; 23(5):387-411.
32. Comstock G, Partridge K. Church attendance and health. Journal of Chronic Diseases. 1972; 25(12): 665-72.
33. Khalili F, Sam S, Sharifirad G, Hassanzadeh A, Kazemi A. The relationship between perceived social support and social health of elderly. Health Research Journal. 2011; 7 (6): 1216-25. [Persian]
34. Barry LC, Kasl SV, Lichtman J, Vaccarino V, Krumholz HM. Social support and change in health-related quality of life 6 months after coronary artery bypass grafting. Journal of Psychosomatic Research. 2006; 60(2): 185-93.
35. Madnawat AV, Kachhawa PS. Age, gender, and living circumstances: discriminating older adults on death anxiety. Death Studies. 2007; 31(8): 763-9.
36. Nouhi E, Karimi T, Iranmanesh S. Comparing fear of death of the elderly settled in elderly’s home and inhabited in city houses of Isfahan. Salmand, Iranian Journal of Ageing. 2014; 8(4): 24-31. [Persian]
37. Vahdani Nia M, Goshtasebi A, Montazeri A, Maftoon F. Health-related quality of life in an elderly population in Iran: A population-based study. Payesh. 2005; 4(2): 113-20. [Persian]
38. Leung KK, Chen CY, Lue BH, Hsu ST. Social support and family functioning on psychological symptoms in elderly Chinese. Archives of Gerontology and Geriatrics. 2007; 44(2): 203-13.