1. Sonnega A, Faul JD, Ofstedal MB, Langa KM, Phillips JW, Weir DR. Cohort Profile: the Health and Retirement Study (HRS). Int J Epidemiol 2014;43:576-585. PMID:
24671021.
3. Steptoe A, Breeze E, Banks J, Nazroo J. Cohort profile: the English longitudinal study of ageing. Int J Epidemiol 2013;42:1640-1648. PMID:
23143611.
4. Boo KC, Chang JY. Korean longitudinal study of ageing: research design for international comparative studies. Surv Res 2006;7:97-122.
5. Hong KS, Bang OY, Kang DW, Yu KH, Bae HJ, Lee JS, et al. Stroke statistics in Korea: part I. Epidemiology and risk factors: a report from the Korean stroke society and clinical research center for stroke. J Stroke 2013;15:2-20. PMID:
24324935.
6. Lim SJ, Kim HJ, Nam CM, Chang HS, Jang YH, Kim S, et al. Socioeconomic costs of stroke in Korea: estimated from the Korea national health insurance claims database. J Prev Med Public Health 2009;42:251-260. PMID:
19675402.
7. Hong KS, Bang OY, Kim JS, Heo JH, Yu KH, Bae HJ, et al. Stroke statistics in Korea: part II stroke awareness and acute stroke care, a report from the Korean Stroke Society and Clinical Research Center for Stroke. J Stroke 2013;15:67-77. PMID:
24324942.
8. Shih RA, Lee J, Das L. Harmonization of cross-national studies of aging to the health and retirement study: cognition. Santa Monica: RAND Corporation; 2012.
10. Cieza A, Oberhauser C, Bickenbach J, Jones RN, Ustun TB, Kostanjsek N, et al. The English are healthier than the Americans: really. Int J Epidemiol 2015;44:229-238. PMID:
25231371.
11. Grimby G, Andren E, Holmgren E, Wright B, Linacre JM, Sundh V. Structure of a combination of Functional Independence Measure and Instrumental Activity Measure items in community-living persons: a study of individuals with cerebral palsy and spina bifida. Arch Phys Med Rehabil 1996;77:1109-1114. PMID:
8931519.
12. Altman BM. Definitions, concepts, and measures of disability. Ann Epidemiol 2014;24:2-7. PMID:
24268996.
13. Wright BD, Linacre JM. Observations are always ordinal; measurements, however, must be interval. Arch Phys Med Rehabil 1989;70:857-860. PMID:
2818162.
14. Wright BD, Stone MH. Best test design. Chicago, IL: Mesa Press; 1979.
15. Chan KS, Kasper JD, Brandt J, Pezzin LE. Measurement equivalence in ADL and IADL difficulty across international surveys of aging: findings from the HRS, SHARE, and ELSA. J Gerontol B Psychol Sci Soc Sci 2012;67:121-132. PMID:
22156662.
16. Hong I, Yoo EY, Kazley AS, Lee D, Li CY, Reistetter TA. Development and validation of the activities of daily living short form for community-dwelling Korean stroke survivors. Eval Health Prof 2018;41:44-66. PMID:
29179561.
17. Won CW, Rho YG, Kim SY, Cho BR, Lee YS. The validity and reliability of Korean Activities of Daily Living(KADL) Scale. J Korean Geriatr Soc 2002;6:98-106.
18. Won CW, Rho YG, SunWoo D, Lee YS. The validity and reliability of Korean Instrumental Activities of Daily Living(K-IADL) Scale. J Korean Geriatr Soc 2002;6:273-280.
19. Won CW, Yang KY, Rho YG, Kim SY, Lee EJ, Yoon JL, et al. The development of Korean Activities of Daily Living(K-ADL) and Korean Instrumental Activities of Daily Living(K-IADL) Scale. J Korean Geriatr Soc 2002;6:107-120.
20. Reeve BB, Hays RD, Bjorner JB, Cook KF, Crane PK, Teresi JA, et al. Psychometric evaluation and calibration of health-related quality of life item banks: plans for the Patient-Reported Outcomes Measurement Information System (PROMIS). Med Care 2007;45(5 Suppl 1): S22-S31. PMID:
17443115.
22. Tabachnick BG, Fidell LS. Using multivariate statistics. 5th ed. Boston: Pearson; 2006.
23. Andrich D. A rating formulation for ordered response categories. Psychometrika 1978;43:561-573.
25. Wright BD. Despair and hope for educational measurement. Contemp Educ Rev 1984;3:281-288.
26. Bond TG, Fox CM. Applying the Rasch model fundamental measurement in the human sciences. Mahwah: Psychology Press; 2001.
27. Linacre JM. What do infit and outfit, mean-square and standardization mean. Rasch Meas Trans 2002;16:878.
28. Wright BD, Linacre JM, Gustafson JE, Martin-Lof P. Reasonable mean-square fit values. Rasch Meas Trans 1994;8:370.
29. Linacre JM. When to stop removing items and persons in Rasch misfit analysis. Rasch Meas Trans 2010;23:1241.
30. Fisher WP. Reliability, separation, strata statistics. Rasch Meas Trans 1992;6:238.
31. Fisher W. Rating scale instrument quality criteria. Rasch Meas Trans 2007;21:1095.
32. Wright BD, Masters GN. Rating scale analysis. Chicago: Mesa Press; 1982.
33. Harvill LM. Standard error of measurement. Educ Meas 1991;10:33-41.
34. Mallinson T, Stelmack J, Velozo C. A comparison of the separation ratio and coefficient alpha in the creation of minimum item sets. Med Care 2004;42(1 Suppl): I17-I24. PMID:
14707752.
35. Linacre JM. Sample size and item calibration stability. Rasch Meas Trans 1994;7:328.
36. Wang WC, Chen CT. Item parameter recovery, standard error estimates, and fit statistics of the WINSTEPS program for the family of Rasch models. Educ Psychol Meas 2005;65:376-404.