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Prevalence of the Major Mental Disorders among the Korean Elderly

  • Cho, Maeng-Je (Department of Psychiatry & Behavioral Science, Seoul National University College of Medicine) ;
  • Lee, Jun-Young (Department of Psychiatry & Behavioral Science, Seoul National University College of Medicine) ;
  • Kim, Byung-Soo (Department of Neuropsychiatry, Seoul National University Hospital) ;
  • Lee, Hae-Woo (Department of Neuropsychiatry, Seoul National University Hospital) ;
  • Sohn, Jee-Hoon (Department of Neuropsychiatry, Seoul National University Hospital)
  • Published : 2011.01.01

Abstract

With a rapidly aging society, geriatric mental health is emerging as important public health concern. Despite the short history of psychiatric epidemiology in Korea, recently, epidemiologic data regarding geriatric psychiatric problems has started to accumulate. In the current study, we reviewed epidemiological findings regarding geriatric mental health in Korea. It was found that up to 10% of the elderly suffer from dementia, and 10% to 20% from depressive disorder. Further, prevalence estimates of Alzheimer's disease ranged from 4.2% to 9.0%, and vascular dementia from 1.0% to 4.8%. Annual incidence rates for Alzheimer's were 2.7% to 3.4% whereas that for vascular dementia was found to be as low as 0.3%. The prevalence of major depressive disorder was 4.2% to 9.1%, while that of clinically significant depressive symptom was between 9.1% and 33.0%. Finally, those with alcohol use disorders were found to comprise up to 13.6% of elderly population and additionally, 22% to 58% of the elderly were found to have sleep difficulties. Thus major mental disorders are already prevalent among the Korean elderly and are likely to increase rapidly.

Keywords

References

  1. Korean National Statistical Office. Population projection for Korea. Available at http://kosis.kr/nsportal/abroad/abroad_01List.jsp?parentId=A [accessed on 1 May 2009].
  2. Park J, Ko HJ, Park YN, Jung CH. Dementia among the elderly in a rural Korean community. Br J Psychiatry 1994; 164: 796-801. https://doi.org/10.1192/bjp.164.6.796
  3. Woo JI, Lee JH, Yoo KY, Kim CY, Kim YI, Shin YS. Prevalence estimation of dementia in a rural area of Korea. J Am Geriatr Soc 1998; 46: 983-7.
  4. Cho MJ, Hahm BJ, Jhoo JH, Bae JN, Kwon JS. Prevalence of cognitive impairment and depressive symptoms among the elderly in an urban community. J Korean Neuropsychiatr Assoc 1998; 37: 352-62.
  5. Kim DH, Na DL, Yeon BG, Kang Y, Min KB, Lee SH, Lee SS, Lee MR, Pyo OJ, Park CB, Kim S, Bae SS. Prevalence of dementia in the elderly of an urban community in Korea. Korean J Prev Med 1999; 32: 306-16.
  6. Kwak DI, Choi YK, Jung IK, Lee MS. Epidemiological study of dementia in a Korea urban area. J Korean Geriatr Psychiatry 1999; 3: 44-52.
  7. Cho MJ, Hong JP. Mental health status and health promotion in Korean elderly: a study on elderly in a big city. Seoul: Jip Moon Dang; 2000.
  8. Bae JN. Dementia, depressive disorders, and substance use disorders among the urban elderly in Korea [dissertation]. Seoul: Seoul National University; 2001.
  9. Kim JK, Kim SU, Hahm BJ, Lee JY, Cho MJ. Three and half year follow-up study on a rural elderly cohort: prevalence, incidence, and service utilization of dementia and depressive disorders. J Korean Geriatr Psychiatry 2002; 6: 88-96.
  10. Lee DY, Lee JH, Ju YS, Lee KU, Kim KW, Jhoo JH, Yoon JC, Ha J, Woo JI. The prevalence of dementia in older people in an urban population of Korea: the Seoul study. J Am Geriatr Soc 2002; 50: 1233-9. https://doi.org/10.1046/j.1532-5415.2002.50310.x
  11. Shin IS, Kim JM, Yoon JS, Kim SJ, Yang SJ, Kim WJ, Lee SH, Kang SA, Kwak JY, Lee HY. Prevalence rate and risk factors of dementia compared between urban and rural communities of the metropolitan Kwangju area. J Korean Neuropsychiatr Assoc 2002; 41: 1165-73.
  12. Kim J, Jeong I, Chun JH, Lee S. The prevalence of dementia in a metropolitan city of South Korea. Int J Geriatr Psychiatry 2003; 18: 617-22. https://doi.org/10.1002/gps.897
  13. Suh GH, Kim JK, Cho MJ. Community study of dementia in the older Korean rural population. Aust N Z J Psychiatry 2003; 37: 606-12. https://doi.org/10.1046/j.1440-1614.2003.01237.x
  14. Lee JY, Kim JK, Hahm BJ, Suh GH, Jeon HJ, Chang HS, Chang JS, Cho MJ. Incidence and risk factors of dementia in a rural area. J Korean Geriatr Psychiatry 2004; 8: 127-32.
  15. Shin HY, Chung EK, Rhee JA, Yoon JS, Kim JM. Prevalence and related factors of dementia in an urban elderly population using a new screening method. J Prev Med Public Health 2005; 38: 351-8.
  16. Kim JM, Stewart R, Kim SW, Yang SJ, Shin IS, Yoon JS. A prospective study of changes in subjective memory complaints and onset of dementia in South Korea. Am J Geriatr Psychiatry 2006; 14: 949-56. https://doi.org/10.1097/01.JGP.0000214857.66638.ed
  17. Jhoo JH, Kim KW, Huh Y, Lee SB, Park JH, Lee JJ, Choi EA, Han C, Choo IH, Youn JC, Lee DY, Woo JI. Prevalence of dementia and its subtypes in an elderly urban korean population: results from the Korean Longitudinal Study on Health And Aging (KLoSHA). Dement Geriatr Cogn Disord 2008; 26: 270-6. https://doi.org/10.1159/000160960
  18. Choi SJ, Jung SS, You YS, Shin BS, Kim JE, Yoon SW, Jeon DW, Baek JH, Park SW, Lee JG, Kim YH. Prevalence of Alzheimer's dementia and its risk factors in community-dwelling elderly Koreans. Psychiatry Investig 2008; 5: 78-85. https://doi.org/10.4306/pi.2008.5.2.78
  19. Seoul National University Hospital. Nationwide study on the prevalence of dementia in Korean elders. Seoul: Seoul National University Hospital; 2009.
  20. Ott A, Breteler MM, van Harskamp F, Claus JJ, van der Cammen TJ, Grobbee DE, Hofman A. Prevalence of Alzheimer's disease and vascular dementia: association with education. The Rotterdam study. BMJ 1995;310: 970-3.
  21. O'Connor DW, Pollitt PA, Hyde JB, Fellows JL, Miller ND, Brook CP, Reiss BB, Roth M. The prevalence of dementia as measured by the Cambridge Mental Disorders of the Elderly Examination. Acta Psychiatr Scand 1989;79: 190-8. https://doi.org/10.1111/j.1600-0447.1989.tb08587.x
  22. Evans DA, Funkenstein HH, Albert MS, Scherr PA, Cook NR, Chown MJ, Hebert LE, Hennekens CH, Taylor JO. Prevalence of Alzheimer's disease in a community population of older persons. Higher than previously reported. JAMA 1989; 262: 2551-6. https://doi.org/10.1001/jama.1989.03430180093036
  23. Rocca WA, Bonaiuto S, Lippi A, Luciani P, Turtu F, Cavarzeran F, Amaducci L. Prevalence of clinically diagnosed Alzheimer's disease and other dementing disorders: a door-to-door survey in Appignano, Macerata Province, Italy. Neurology 1990; 40: 626-31. https://doi.org/10.1212/WNL.40.4.626
  24. Dartigues JF, Gagnon M, Michel P, Letenneur L, Commenges D, Barberger- Gateau P, Auriacombe S, Rigal B, Bedry R, Alperovitch A, Orgogolo JM, Henry P, Loiseau P, Salamon R. The Paquid research program on the epidemiology of dementia. Methods and initial results. Rev Neurol (Paris) 1991; 147: 225-30.
  25. Canadian Study of Health and Aging Working Group. Canadian study of health and aging: study methods and prevalence of dementia. CMAJ 1994; 150: 899-913.
  26. Fratiglioni L, Grut M, Forsell Y, Viitanen M, Grafstrom M, Holmen K, Ericsson K, Backman L, Ahlbom A, Winblad B. Prevalence of Alzheimer's disease and other dementias in an elderly urban population: relationship with age, sex, and education. Neurology 1991; 41: 1886-92. https://doi.org/10.1212/WNL.41.12.1886
  27. Ueda K, Kawano H, Hasuo Y, Fujishima M. Prevalence and etiology of dementia in a Japanese community. Stroke 1992; 23: 798-803. https://doi.org/10.1161/01.STR.23.6.798
  28. Hasegawa K. The clinical issues of age-related dementia. Tohoku J Exp Med 1990; 161 Suppl: 29-38.
  29. Yamada M, Sasaki H, Mimori Y, Kasagi F, Sudoh S, Ikeda J, Hosoda Y, Nakamura S, Kodama K. Prevalence and risks of dementia in the Japanese population: RERF's adult health study Hiroshima subjects. Radiation Effects Research Foundation. J Am Geriatr Soc 1999; 47: 189-95.
  30. Shibayama H, Kasahara Y, Kobayashi H. Prevalence of dementia in a Japanese elderly population. Acta Psychiatr Scand 1986; 74: 144-51. https://doi.org/10.1111/j.1600-0447.1986.tb10598.x
  31. Dong MJ, Peng B, Lin XT, Zhao J, Zhou YR, Wang RH. The prevalence of dementia in the People's Republic of China: a systematic analysis of 1980-2004 studies. Age Ageing 2007; 36: 619-24. https://doi.org/10.1093/ageing/afm128
  32. Jorm AF, Christensen H, Jacomb PA, Korten AE, Mackinnon AJ. The cognitive decline scale of the psychogeriatric assessment scales (PAS): longitudinal data on its validity. Int J Geriatr Psychiatry 2001; 16: 261-5. https://doi.org/10.1002/gps.326
  33. Cho MJ, Park IS, Shin YM, Kim MJ, Jung HY, Chung EK, Choi YS, Suh GH, Hahm BJ. A preliminary study for the validation of the Korean version of psychogeriatric assessment scale. J Korean Neuropsychiatr Assoc 2000; 39: 128-41.
  34. Yoon SJ, Lee YH, Son TY, Oh HJ, Han GS, Kim KH. Factors Associated with dementia and depressive symptoms in older persons living in the community. J Korean Gerontol Soc 2002; 21: 59-73.
  35. Ko K, Jung M, Hong S. Prevalence of cognitive impairment and related factors among the elderly in rural communities of Jeju Province. J Korean Acad Nurs 2003; 33: 503-9.
  36. Oh BH, Kim HS, Kim JH, Cho HS, Cho KH, Cho HS, Yoo KJ. Epidemiologic study of cognitive impairment and depressive symptoms of the elderly in a Korean rural community. J Korean Geriatr Psychiatry 1998; 2:176-86.
  37. Ikeda M, Hokoishi K, Maki N, Nebu A, Tachibana N, Komori K, Shigenobu K, Fukuhara R, Tanabe H. Increased prevalence of vascular dementia in Japan: a community-based epidemiological study. Neurology 2001;57: 839-44. https://doi.org/10.1212/WNL.57.5.839
  38. Fratiglioni L, De Ronchi D, Aguero-Torres H. Worldwide prevalence and incidence of dementia. Drugs Aging 1999; 15: 365-75. https://doi.org/10.2165/00002512-199915050-00004
  39. Ferri CP, Prince M, Brayne C, Brodaty H, Fratiglioni L, Ganguli M, Hall K, Hasegawa K, Hendrie H, Huang Y, Jorm A, Mathers C, Menezes PR, Rimmer E, Scazufca M. Global prevalence of dementia: a Delphi consensus study. Lancet 2005; 366: 2112-7.
  40. Suh GH, Shah A. A review of the epidemiological transition in dementia-- cross-national comparisons of the indices related to Alzheimer's disease and vascular dementia. Acta Psychiatr Scand 2001; 104: 4-11. https://doi.org/10.1034/j.1600-0447.2001.00210.x
  41. Yamada T, Hattori H, Miura A, Tanabe M, Yamori Y. Prevalence of Alzheimer's disease, vascular dementia and dementia with Lewy bodies in a Japanese population. Psychiatry Clin Neurosci 2001; 55: 21-5. https://doi.org/10.1046/j.1440-1819.2001.00779.x
  42. Maj M, Sartorius N. Dementia. 2nd ed. Chichester: John Wiley & Sons Ltd; 2002.
  43. Fratiglioni L, Viitanen M, von Strauss E, Tontodonati V, Herlitz A, Winblad B. Very old women at highest risk of dementia and Alzheimer's disease: incidence data from the Kungsholmen Project, Stockholm. Neurology 1997; 48: 132-8. https://doi.org/10.1212/WNL.48.1.132
  44. Heyman A, Peterson B, Fillenbaum G, Pieper C. The consortium to establish a registry for Alzheimer's disease (CERAD). Part XIV: Demographic and clinical predictors of survival in patients with Alzheimer's disease. Neurology 1996; 46: 656-60. https://doi.org/10.1212/WNL.46.3.656
  45. Katzman R. Education and the prevalence of dementia and Alzheimer's disease. Neurology 1993; 43: 13-20. https://doi.org/10.1212/WNL.43.1_Part_1.13
  46. Stern Y, Gurland B, Tatemichi TK, Tang MX, Wilder D, Mayeux R. Influence of education and occupation on the incidence of Alzheimer's disease. JAMA 1994; 271: 1004-10. https://doi.org/10.1001/jama.1994.03510370056032
  47. Mortimer JA, van Duijn CM, Chandra V, Fratiglioni L, Graves AB, Heyman A, Jorm AF, Kokmen E, Kondo K, Rocca WA. Head trauma as a risk factor for Alzheimer's disease: a collaborative re-analysis of case-control studies. EURODEM Risk Factors Research Group. Int J Epidemiol 1991;20 Suppl 2: S28-35.
  48. Guo Z, Cupples LA, Kurz A, Auerbach SH, Volicer L, Chui H, Green RC, Sadovnick AD, Duara R, DeCarli C, Johnson K, Go RC, Growdon JH, Haines JL, Kukull WA, Farrer LA. Head injury and the risk of AD in the MIRAGE study. Neurology 2000; 54: 1316-23. https://doi.org/10.1212/WNL.54.6.1316
  49. Breitner JC. Inflammatory processes and antiinflammatory drugs in Alzheimer's disease: a current appraisal. Neurobiol Aging 1996; 17: 789-94. https://doi.org/10.1016/0197-4580(96)00109-1
  50. McGeer PL, Schulzer M, McGeer EG. Arthritis and anti-inflammatory agents as possible protective factors for Alzheimer's disease: a review of 17 epidemiologic studies. Neurology 1996; 47: 425-32. https://doi.org/10.1212/WNL.47.2.425
  51. Meyer JS, Rauch GM, Rauch RA, Haque A, Crawford K. Cardiovascular and other risk factors for Alzheimer's disease and vascular dementia. Ann N Y Acad Sci 2000; 903: 411-23. https://doi.org/10.1111/j.1749-6632.2000.tb06393.x
  52. Hebert R, Lindsay J, Verreault R, Rockwood K, Hill G, Dubois MF. Vascular dementia: incidence and risk factors in the Canadian study of health and aging. Stroke 2000; 31: 1487-93. https://doi.org/10.1161/01.STR.31.7.1487
  53. Suh GH, Kim JK, Yeon BK, Park SK, Yoo KY, Yang BK, Kim YS, Cho MJ. Prevalence and risk factors of dementia and depression in the elderly. J Korean Neuropsychiatr Assoc 2000; 39: 809-24.
  54. Cho MJ, Nam JJ, Suh GH. Prevalence of symptoms of depression in a nationwide sample of Korean adults. Psychiatry Res 1998; 81: 341-52. https://doi.org/10.1016/S0165-1781(98)00122-X
  55. Koenig HG, Blazer DG. Epidemiology of geriatric affective disorders. Clin Geriatr Med 1992; 8: 235-51.
  56. Rhee JA, Jung HG. A study on the depression and cognitive impairment in the rural elderly. Korean J Prev Med 1993; 26: 412-29.
  57. Cho MJ, Kim KH. Use of the Center for Epidemiologic Studies Depression (CES-D) Scale in Korea. J Nerv Ment Dis 1998; 186: 304-10. https://doi.org/10.1097/00005053-199805000-00007
  58. Kim JM, Shin IS, Yoon JS, Stewart R. Prevalence and correlates of late-life depression compared between urban and rural populations in Korea. Int J Geriatr Psychiatry 2002; 17: 409-15. https://doi.org/10.1002/gps.622
  59. Hong JP. Prevalence of psychiatric illness and quality of life in the Korean urban elderly Seoul [dissertation]. Seoul: Seoul National University; 2000.
  60. Kim JM, Stewart R, Shin IS, Yoon JS, Lee HY. Lifetime urban/rural residence, social support and late-life depression in Korea. Int J Geriatr Psychiatry 2004; 19: 843-51. https://doi.org/10.1002/gps.1175
  61. Kim JM, Shin IS, Kim LJ, Yoon JS, Lee HY. Subjective memory impairment, cognitive function and depression, a cross-sectional study in acommunity dwelling elderly population. J Korean Neuropsychiatr Assoc 2002; 41: 706-12.
  62. Lee CI, Hong SC. The prevalence and related factors of depressive symptoms among the elderly in rural areas of Jeju island. J Korean Geriatr Psychiatry 2002; 6: 97-109.
  63. Cho MJ, Hahm BJ, Rhi BY, Kim SY, Shin YM, Lee CI. Prevalence of cognitive impairment and depressive symptomatology of the elderly in a longterm institution. J Korean Neuropsychiatr Assoc 1998; 37: 913-20.
  64. Cho MJ, Hahm BJ, Suh T, Suh GH, Cho SJ, Lee CK. Comorbid mental disorders among the patients with alcohol abuse and dependence in Korea. J Korean Med Sci 2002; 17: 236-41.
  65. Namkoong K, Lee HY, Lee MH, Kim NW, Shin SC. The epidemiological study of alcoholism in the elderly in a Korean rural community (Kangwha county). J Korean Neuropsychiatr Assoc 1989; 28: 1082-90.
  66. Kim JM, Shin IS, Stewart R, Yoon JS. Alcoholism in older Korean men: prevalence, aetiology, and comorbidity with cognitive impairment and dementia in urban and rural communities. Int J Geriatr Psychiatry 2002;17: 821-7. https://doi.org/10.1002/gps.687
  67. Kim KW, Choi EA, Lee SB, Park JH, Lee JJ, Huh Y, Youn JC, Jhoo JH, Choo IH, Kim MH, Lee DY, Woo JI. Prevalence and neuropsychiatric comorbidities of alcohol use disorders in an elderly Korean population. Int J Geriatr Psychiatry 2009; 24: 1420-8. https://doi.org/10.1002/gps.2280
  68. Moos RH, Brennan PL, Schutte KK, Moos BS. Older adults' health and late-life drinking patterns: a 20-year perspective. Aging Ment Health 2010;14: 33-43. https://doi.org/10.1080/13607860902918264
  69. Kim L. Pharmacological treatment of sleep disorders in elderly. J Korean Geriatr Psychiatry 2003; 7: 11-22.
  70. Yang CK, Yoo SY, Joo YH, Hahn HM. Sleep habits and sleep disorders among the elderly between 65-84 years who are living in a part of Pusan. Sleep Med Pscyhophysiol 1997; 4: 66-76.
  71. Yoon JS, Shin IS, Kim JM, Kang SA, Ha HY, Park IS, Lee HY. Sleep patterns and problems of the korean elderly in urban and rural areas. Korean J Sleep Med 1999; 1: 42-9.
  72. Cho MJ, Kim JK, Jeon HJ, Suh T, Chung IW, Hong JP, Bae JN, Lee DW, Park JI, Cho SJ, Lee CK, Hahm BJ. Lifetime and 12-month prevalence of DSM-IV psychiatric disorders among Korean adults. J Nerv Ment Dis 2007; 195: 203-10. https://doi.org/10.1097/01.nmd.0000243826.40732.45
  73. Cho MJ, Chang SM, Hahm Bj, Chung IW, Bae A, Lee YM, Ahn JH, Won SH, Son J, Hong JP, Bae JN, Lee DW, Cho SJ, Park JI, Lee JY, Kim JY, Jeon HJ, Lee HW. Prevalence and correlates of major mental disorders among Korean adults: a 2006 National Epidemiologic Survey. J Korean Neuropsychiatr Assoc 2009; 48: 143-52.
  74. Korean Ministry of Public Adminstration and Security. Munincipal Yearbook of Korea. 36th (2007) ed. Seoul: Regional Economy Division; 2008.
  75. Eng MY, Luczak SE, Wall TL. ALDH2, ADH1B, and ADH1C genotypes in Asians: a literature review. Alcohol Res Health 2007; 30: 22-7.
  76. Simon GE, Ludman EJ. Outcome of new benzodiazepine prescriptions to older adults in primary care. Gen Hosp Psychiatry 2006; 28: 374-8. https://doi.org/10.1016/j.genhosppsych.2006.05.008
  77. Lee HY, Shin SC. A pattern of mental disorders (K-OARS) in the elderly in a korean rural community (Kangwha county). J Korean Neuropsychiatr Assoc 1989; 28: 617-31.
  78. Lee MS, Nam JW, Cha JH, Kwak DI. Factors affecting the severity of depressive symptoms in the elderly. J Korean Neuropsychiatr Assoc 1999; 38: 1063-70.
  79. Lee Y, Shinkai S. Correlates of cognitive impairment and depressive symptoms among older adults in Korea and Japan. Int J Geriatr Psychiatry 2005; 20: 576-86. https://doi.org/10.1002/gps.1313

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