Validation of the Korean Version of the General Practitioner Assessment of Cognition (K-GPCog)

한국형 실무자용 노인인지기능 사정도구(K-GPCog)의 신뢰도, 타당도 분석

  • Received : 2010.03.08
  • Accepted : 2010.05.03
  • Published : 2010.06.30

Abstract

Purpose: The purpose of this study was to examine the psychometric properties of the Korean version of the General Practitioner Assessment of Cognition (K-GPCog) scale. Method: The K-GPCog consists of the 2 subscales, patients and caregivers. Using a sample of 412 community-based Korean older adults, internal consistency reliability was estimated using Cronbach's alpha. To evaluate validity of the K-GPCog, correlational analysis was conducted using Pearson r between K-GPCog and the Korean Dementia Screening Questionnaire (KDSQ). Results: Cronbach's alpha coefficients of the K-GPCog patients' and caregivers' subscales .788 and .794 respectively. Pearson's correlation coefficients were r=-.374, r=-.481, and r=-.493, respectively for the subscales of patients and primary caregivers, and total K-GPCog. The degree of diagnostic agreement about the risk for cognitive disorders of older adults showed 11.7% and 11.2% respectively for the K-GPCog and the KDSQ. Conclusion: The findings provided preliminary evidence of the K-GPCog as a useful screening measure for detecting mild cognitive disorders of Korean older adults. The K-GPCog is particularly useful to identify cognitive disorders from primary caregivers when it is difficult to assess the level of cognition of older adults.

Keywords

References

  1. Borson, S., Scanlan, J. M., Chen, P., & Ganguli, M. (2003). The Mini-Cog as a screen for dementia: validation in a population-based sample. Journal of the American Geriatrics Society, 51(10), 1451-1454. https://doi.org/10.1046/j.1532-5415.2003.51465.x
  2. Brodaty, H., Low, L. F., Gibson, L., & Burns, K. (2006). What is the best dementia screening instrument for general practitioners to use? The American Journal of Geriatric Psychiatry, 14(5), 391-400. https://doi.org/10.1097/01.JGP.0000216181.20416.b2
  3. Brodaty, H., Pond, D., Kemp, N. M., Luscombe, G., Harding, L., Berman, K., & Huppert, F. A. (2002). The GPCOG: a new screening test for dementia designed for general practice. Journal of the American Geriatrics Society, 50(3), 530-534. https://doi.org/10.1046/j.1532-5415.2002.50122.x
  4. Bruscoli, M., & Lovestone, S. (2004). Is MCI really just early dementia? a systematic review of conversion studies. International Psychogeriatrics, 16(2), 129-140. https://doi.org/10.1017/S1041610204000092
  5. Cho, M. J., & Kim, K. H. (1998). Use of the center for epidemiologic studies depression (CES-D) scale in Korea. The Journal of Nervous and Mental Disease, 186(5), 304-310. https://doi.org/10.1097/00005053-199805000-00007
  6. Choi, H. Y., & Chang, Y. I. (1995). Comparative study on the horizontal measurements of skeletal class III malocclusion using the ROC analysis. Korean Journal of Orthodontics, 25(2), 153-163.
  7. Farias, S. T., Mungas, D., Reed, B. R., Cahn-Weiner, D., Jagust, W., Baynes, K., & Decarli, C. (2008). The measurement of everyday cognition (ECog): Scale development and psychometric properties. Neuropsychology, 22(4), 531-544. https://doi.org/10.1037/0894-4105.22.4.531
  8. Heo, J. I., Gug, S. H., Yun, J. S., & Lee, H. Y. (2004). The efficiency of the clock drawing test for differentiating mild dementia from geriatric depression. Korean Journal of Clinical Psychology, 23, 189-205.
  9. Isella, V., Villa, L., Russo, A., Regazzoni, R., Ferrarese, C., & Appollonio, I. M. (2006). Discriminative and predictive power of an informant report in mild cognitive impairment. Journal of Neurology, Neurosurgery, and Psychiatry, 77(2), 166-171. https://doi.org/10.1136/jnnp.2005.069765
  10. Ishikawa, T., Ikeda, M., Matsumoto, N., Shigenobu, K., Brayne, C., & Tanabe, H. (2006). A longitudinal study regarding conversion from mild memory impairment to dementia in a Japanese community. International Journal of Geriatric Psychiatry, 21(2), 134-139. https://doi.org/10.1002/gps.1437
  11. Ismail, Z., Rajji, T. K., & Shulman, K. I. (2010). Brief cognitive screening instruments: an update. International Journal of Geriatric Psychiatry, 25(2), 111-120. https://doi.org/10.1002/gps.2306
  12. Jung, Y. M., & Kim, J. H. (2004). Comparison of cognitive levels, nutritional status, depression in the elderly according to living situations. Journal of Korean Academy of Nursing, 34(3), 495-503. https://doi.org/10.4040/jkan.2004.34.3.495
  13. Kang, Y. S., Ha, J. Y., Kim, S. H., Lee, H. L., Park, W. M., & Lee, S. H. (1997). The usefulness of clock drawing test as screening for dementia on the basis of the correlation between clock drawing and MMSE-K. Journal of Korean Academy Family Medicine, 18(8), 785-792.
  14. Kim, B. Y., Kim, H. J., Baek, M. J., & Kim, S. Y. (2007). Preliminary study for expanding the clinical utility of clock drawing test: Alzheimer's disease vs. subcortical vascular dementia. Dementia and Neurocognitive Disorders, 7(2), 39-46.
  15. Kim, J. I. (2006). A validation study on the translated Korean version of the Edinbergh postnatal depression scale. Korean Journal of Women Health Nursing, 12(3), 204-208.
  16. Ko, I. S., Lee, T. W., Lee, K. J., Lee, C. Y., Lim, M. H., Cheon, E. Y., Ju, Y. M., & Lee, K. C. (2005). Analysis of health problems of low-income home care elderly at a urban-rural composite area. Journal of Korean Gerontological Nursing, 7(2), 136-147.
  17. Korea National Statistical Office. (2006). 2006 Population projection: Aged population by sex and age group. Retrieved February 5, 2010, from http://www.kostat.go.kr
  18. Landis, J. R., & Koch, G. G. (1977). The measurement of observer agreement for categorical data. Biometrics, 33(1), 159-174. Retrieved February 5, 2010, from http://en. wikipedia.org/wiki/Cohen%27s_kappa#Example https://doi.org/10.2307/2529310
  19. Lee, J. Y., Lee, D. W., Cho, S. J., Na, D., L., Jeon, H. J., Kim, S. K., Lee, Y. R., Youn, J. H., Kwon M. S., Lee, J. H., & Cho, M. J. (2008). Brief screening for mild cognitive impairment in elderly outpatient clinic: validation of the Korean version of the montreal cognitive assessment. Journal of Geriatric Psychiatry and Neurology, 21(2), 104-110. https://doi.org/10.1177/0891988708316855
  20. Lee, K. S., Cheong, H. K., Oh, B. H., Hong, C. H., & Lee, D. W. (2009). Reliability and validity of four scoring methods of clock drawing test for screening dementia and mild cognitive impairment. Dementia and Neurocognitive Disorders, 8(1), 53-60.
  21. Montorio, I., & Izal, M. (1996). The geriatric depression scale: a review of its development and utility. International Psychogeriatrics, 8(1), 103-112. https://doi.org/10.1017/S1041610296002505
  22. Nunnally, J. C., & Bernstien, I. H. (1994). Psychometric theory. 3rd Ed, NY: McGraw-Hill.
  23. Powlishta, K. K., Von Dras, D. D., Stanford, A., Carr, D. B., Tsering, C., Miller, J. P., et al. (2002). The clock drawing test is a poor screen for very mild dementia. Neurology, 59(6), 898-903. https://doi.org/10.1212/WNL.59.6.898
  24. Rajji, T. K., Miranda, D., Mulsant, B. H., Lotz, M., Houck, P., Zmuda, M. D., Bensasi, S., Reynolds, C. F., & Butters, M. A. (2009). The MMSE is not an adequate screening cognitive instrument in studies of late-life depression. Journal of Psychiatric Research, 43(4), 464-470. https://doi.org/10.1016/j.jpsychires.2008.06.002
  25. Shin, H. H., So, H. Y., & Lee, A. Y. (2008). Comparing clinical usefulness of cognitive function Tests (CDT, K-MMSE, K-3MS, CDR) in dementia patient. The Korean Journal of Rehabilitation Nursing, 11(2), 90-98.
  26. Yamamoto, S., Mogi, N., Umegaki, H., Suzuki, Y., Ando, F., Shimokata, H., & Iguchi, A. (2004). The clock drawing test as a valid screening method for mild cognitive impairment. Dementia & Geriatric Cognitive Disorders, 18(2), 172-179. https://doi.org/10.1159/000079198
  27. Yoon, C. H., & Lee, H. K. (1997). The effects of self-esteem, health status, family relationship and social participation on the life satisfaction of aged widows. Journal of Korean Gerontological Society, 17(1), 289-304.