1. Kaasalainen S. Pain assessment in older adults with dementia: Using behavioral observation methods in clinical practice. J Gerontol Nurs. 2007; 33(6):6–10.
3. Horgas AL, Nichols AL, Schapson CA, Vietes K. Assessing pain in persons with dementia: Relationships among the non-communicative patient's pain assessment instrument, self-report, and behavioral observations. Pain Manag Nurs. 2007; 8(2):77–85.
http://dx.doi.org/10.1016/j.pmn.2007.03.003.
4. Zwakhalen SM, Hamers JP, Abu-Saad HH, Berger MP. Pain in elderly people with severe dementia: A systematic review of behavioural pain assessment tools. BMC Geriatr. 2006; 6:3.
http://dx.doi.org/10.1186/1471-2318-6-3.
5. Cohen-Mansfield J, Creedon M. Nursing staff members' perceptions of pain indicators in persons with severe dementia. Clin J Pain. 2002; 18(1):64–73.
6. AGS Panel on Persistent Pain in Older Persons. The management of persistent pain in older persons. J Am Geriatr Soc. 2002; 50:6 Suppl. S205–S224.
7. Reid MC, Guo Z, Jenq GY, Gill TM. Factors associated with pain-related disability among community-dwelling older persons with chronic pain. J Am Geriatr Soc. 2003; 51:Suppl S4. S204.
8. Ryoo EN, Park KS. Validity, reliability and efficiency of pain self-report scale in elderly with dementia. Korean J Adult Nurs. 2011; 23(2):111–122.
9. Pautex S, Herrmann F, Le Lous P, Fabjan M, Michel JP, Gold G. Feasibility and reliability of four pain self-assessment scales and correlation with an observational rating scale in hospitalized elderly demented patients. J Gerontol A Biol Sci Med Sci. 2005; 60(4):524–529.
10. Kim SJ, Ryoo EN, Park KS. A study on pain, physical function, cognitive function, depression and agitation in elderly women with dementia. J Korean Acad Adult Nurs. 2007; 19(3):401–412.
11. Herr KA, Spratt K, Mobily PR, Richardson G. Pain intensity assessment in older adults: Use of experimental pain to compare psychometric properties and usability of selected pain scales with younger adults. Clin J Pain. 2004; 20(4):207–219.
12. Schmader KE, Hanlon JT, Fillenbaum GG, Huber M, Pieper C, Horner R. Medication use patterns among demented, cognitively impaired and cognitively intact community-dwelling elderly people. Age Ageing. 1998; 27(4):493–501.
13. Sloman R, Ahern M, Wright A, Brown L. Nurses' knowledge of pain in the elderly. J Pain Symptom Manage. 2001; 21(4):317–322.
14. Ryoo EN. Verification of self-report scale about pain assessment in elder with dementia [dissertation]. Seoul: Chung-Ang University;2009.
16. Herr K, Bursch H, Ersek M, Miller LL, Swafford K. Use of pain-behavioral assessment tools in the nursing home: Expert consensus recommendations for practice. J Gerontol Nurs. 2010; 36(3):18–29.
http://dx.doi.org/10.3928/00989134-20100108-04.
17. Zwakhalen SM, Hamers JP, Berger MP. The psychometric quality and clinical usefulness of three pain assessment tools for elderly people with dementia. Pain. 2006; 126(1-3):210–220.
http://dx.doi.org/10.1016/j.pain.2006.06.029.
18. Fuchs-Lacelle S, Hadjistavropoulos T. Development and preliminary validation of the pain assessment checklist for seniors with limited ability to communicate (PACSLAC). Pain Manag Nurs. 2004; 5(1):37–49.
19. Takai Y, Yamamoto-Mitani N, Suzuki M, Furuta Y, Sato A, Fujimaki Y. Developing and validating a Japanese version of the assessment of pain in elderly people with communication impairment. Arch Gerontol Geriatr. 2013; 57(3):403–410.
http://dx.doi.org/10.1016/j.archger.2013.06.002.
21. Park JH, Kwon YC. Standardization of Korean version of the minimental state examination (MMSE-K) for use in the elderly. Part diagnostic validity. J Korean Neuropsychiatr Assoc. 1989; 28(3):508–513.
23. Chapman DW, Carter JF. Translation procedures for cross-cultural use of measurement instruments. Educ Eval Policy Anal. 1979; 1(3):71–76.
24. Streiner DL, Norman GR. Health measurement scales: A practical guide to their development and use. 3rd ed. Oxford, UK: Oxford University Press;2003.
25. Zwakhalen SM, Koopmans RT, Geels PJ, Berger MP, Hamers JP. The prevalence of pain in nursing home residents with dementia measured using an observational pain scale. Eur J Pain. 2009; 13(1):89–93.
http://dx.doi.org/10.1016/j.ejpain.2008.02.009.
26. Kaasalainen S, Akhtar-Danesh N, Hadjistavropoulos T, Zwakhalen S, Verreault R. A comparison between behavioral and verbal report pain assessment tools for use with residents in long term care. Pain Manag Nurs. 2013; 14(4):e106–e114.
http://dx.doi.org/10.1016/j.pmn.2011.08.006.
28. van Nispen tot Pannerden SC, Candel MJ, Zwakhalen SM, Hamers JP, Curfs LM, Berger MP. An item response theory-based assessment of the pain assessment checklist for seniors with limited ability to communicate (PACSLAC). J Pain. 2009; 10(8):844–853.
http://dx.doi.org/10.1016/j.jpain.2009.02.007.