Advertisement

Aging Clinical and Experimental Research

, Volume 19, Issue 6, pp 457–464 | Cite as

Using the 12-item Short Form health survey (SF-12) to measure quality of life among older people

  • Ulf JakobssonEmail author
Original Articles

Abstract

Aims: To present descriptive data, study psychometric abilities, and investigate the characteristics of non-respondents to SF-12. Method: The study had a randomized sample (n=4278; age: 75–105) stratified in four age groups. Factor analyses were performed to investigate the factor structure of the instrument, and convergent and discriminant validity was assessed by correlation between summary scores and by means of various measures (such as symptoms and ADL). Mean scores and Cronbach’s alpha were computed for the total sample and for each stratum. Respondents and non-respondents to SF-12 were compared regarding various measures. A multiple logistic regression analysis was conducted to identify determinants for respondents/non-respondents. Results: Mean scores in the total sample were 37.5 SD 11.9 for the physical component summary score (PCS) and 50.3 SD 11.5 for the mental component summary score (MCS). Both PCS and MCS decreased significantly with higher age. The instrument showed acceptable convergent/discriminant validity and Cronbach’s alpha, but the factor solution did not follow the intended structure of the instrument. Completion rate for all 12 items was 85.5% in the total sample, and the characteristics of non-respondents to SF-12 were higher age, being female, living alone, living in special accommodation, being worried about health, being in need of help with activities of daily living, reporting fewer symptoms, and having a smaller social network than respondents. Conclusions: The instrument generally showed acceptable validity and reliability, except for its factor structure. Furthermore, new determinants for non-respondents of SF-12 were found, such as type of living conditions, being worried about health, and social network.

Keywords

Aged older people quality of life SF-12 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Ware JE, Kosinski M, Keller KD. A 12-item Short-Form Health Survey: construction of scales and preliminary tests of reliability and validity. Med Care 1996; 34: 220–33.PubMedCrossRefGoogle Scholar
  2. 2.
    Ware JE, Sherboume CD. The MOS 36-item Short Form Health Survey (SF-36). I. Conceptual framework and item selection. Med Care 1992; 30: 473–81.Google Scholar
  3. 3.
    Ware JE, Gandek B, Aaronson N, et al. Testing the SF-12 summary health measures in nine countries: results from the IQOLA project. [Abstracts: 4th Annual Conference of ISOQOL] Qual Life Res 1997; 6: 739.Google Scholar
  4. 4.
    Jenkinson C, Layte R, Jankinson D, et al. A shorter form health survey: can the SF-12 replicate results from the SF-36 in longitudinal studies? J Publ Health Med 1997; 19: 179–86.CrossRefGoogle Scholar
  5. 5.
    Gandek B, Ware JE, Aaronson NK, et al. Cross-validation of item selection and scoring for the SF-12 health survey in nine countries: results from the IQOLA project. J Clin Epidemiol 1998; 51: 1171–8.PubMedCrossRefGoogle Scholar
  6. 6.
    Pickard AS, Johnson JA, Penn A, Lau F, Noseworthy T. Replicability of SF-36 summary scores by the SF-12 in stroke patients. Stroke 1999; 30: 1213–7.PubMedCrossRefGoogle Scholar
  7. 7.
    Hurst NP, Ruta DA, Kind P. Comparison of the MOS Short Form-12 (SF-12) health status questionnaire with the SF-36 in patients with rheumatoid arthritis. Br J Rheumatol 1998; 37: 862–9.PubMedCrossRefGoogle Scholar
  8. 8.
    Resnick B, Nahm ES. Reliability and validity testing of the revised 12-item Short-Form health survey in older adults. J Nurs Measure 2001; 9: 151–61.Google Scholar
  9. 9.
    Haywood KL, Garratt AM, Fitzpatrick R. Quality of life in older people: a structured review of generic self-assessed health instruments. Qual Life Res 2005; 14: 1651–68.PubMedCrossRefGoogle Scholar
  10. 10.
    King JT Jr., Horowitz MB, Kasam AB, Yonas H, Roberts MS. The Short Form-12 and the measurement of health status in patients with cerebral aneurysms: performance, validity, and reliability. J Neurosurg 2005; 102: 489–94.PubMedCrossRefGoogle Scholar
  11. 11.
    Bohannon RW, Maljanian R, Landes M. Test-retest reliability of short form (SF)-12 component scores of patients with stroke. Int J Rehabil Res 2004; 27: 149–50.PubMedCrossRefGoogle Scholar
  12. 12.
    Lim LL, Fisher JD. Use of the 12-item Short Form (SF-12) health survey in an Australian heart and stroke population. Qual Life Res 1999; 8: 1–8.PubMedCrossRefGoogle Scholar
  13. 13.
    Muller-Nordhorn J, Nolte CH, Rossnagel K, et al. The use of the 12-item Short-Form health status instrument in a longitudinal study of patients with stroke and transient ischaemic attack. Neuroepidemiology 2005; 24: 196–202.PubMedCrossRefGoogle Scholar
  14. 14.
    Parker SG, Peet SM, Jagger C, Farhan M, Castleden M. Measuring health status in older patients. The SF-36 in practice. Age Ageing 1998; 27: 13–8.CrossRefGoogle Scholar
  15. 15.
    Jakobsson U, Klevsgård R, Westergren A, Hallberg IR. Old people in pain: a comparative study. J Pain Symptom Manage 2003; 26: 625–36.PubMedCrossRefGoogle Scholar
  16. 16.
    Tibblin G. Bengtsson C. Furunes B. Lapidus L. Symptoms by age and sex. Scand J Prim Health Care 1990; 8, 9–17.PubMedCrossRefGoogle Scholar
  17. 17.
    Tibblin G, Svärdsudd K, Welin L, Erikson H, Larsson B. Quality of life as an outcome variable and a risk factor for mortality and cardiovascular disease: a study of men born in 1913. J Hypertension 1993; Suppl 4: S81-6.Google Scholar
  18. 18.
    Sullivan M, Karlsson J, Taft C. SF-12 Hälsoenkät. Svensk manual. [SF-12 Swedish manual]. Göteborg: Göteborg University. 1997.Google Scholar
  19. 19.
    Bland JM. Altman DG. Multiple significance tests: the Bonferroni method. BMJ 1995; 310: 170.Google Scholar
  20. 20.
    Cronbach LJ. Coefficient alpha and the internal structures of tests. Psychometrika 1951; 3: 297–334.CrossRefGoogle Scholar
  21. 21.
    Nunnally JC. Bernstein IH. Psychometric theory (3rd ed.). New York: McGraw-Hill Inc., 1994.Google Scholar
  22. 22.
    Streiner DL, Norman GR. Health measurement scales. A practical guide to their development and use. (2nd ed.) Oxford: Oxford University Press, 1995.Google Scholar
  23. 23.
    Fayers PM, Machin D. Quality of life. Assessment, analysis and interpretation. West Sussex, England: Wiley, 2000.Google Scholar
  24. 24.
    Lyons RA, Perry HM, Littlepage BNC. Evidence for the validity of the Short Form 36 questionnaire (SF-36) in an elderly population. Age Ageing 1994; 23: 182–4.PubMedCrossRefGoogle Scholar
  25. 25.
    Sherboume CD, Meredith LS. Quality of self-reported data: a comparison of older and younger chronically ill patients. J Gerontol Soc Sci 1992; 47:S204-11.Google Scholar
  26. 26.
    McHorney CA. Measuring and monitoring general health status in elderly persons: practical and methodological issues in using the SF-36 health survey. Gerontologist 1996; 36:571–83.PubMedCrossRefGoogle Scholar
  27. 27.
    Hebert R, Bravo G, Korner-Bitensky N, Voyer L. Refusal and information bias associated with postal questionnaires and face-to-face interviews in very elderly subjects. J Clin Epidem 1996; 49: 373–81.CrossRefGoogle Scholar

Copyright information

© Springer Internal Publishing Switzerland 2007

Authors and Affiliations

  1. 1.Department of Health Sciences, Faculty of MedicineLund UniversityLundSweden

Personalised recommendations