Journal
QUALITY OF LIFE RESEARCH
Volume 18, Issue 8, Pages 1053-1060Publisher
SPRINGER
DOI: 10.1007/s11136-009-9512-0
Keywords
Health-related quality of life; Total hip arthroplasty; Harris Hip Score; SF-36
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Funding
- National Science Council, Taiwan [NSC92-2320-B-037-055, NSC95-2314-B-037-050-MY3]
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Comparing the responsiveness over time of the Harris Hip Score (HHS) and the SF-36 in patients who underwent total hip arthroplasty (THA) and assessing variation in the responsiveness of these measures by the number of co-morbidities. This prospective study analyzed 335 THA patients treated at two southern Taiwan hospitals from 1997 to 2000. Magnitude of change in HRQoL was compared by generalized estimating equation. Bias-corrected and accelerated bootstrapping was used to measure magnitude of change in HHS and SF-36 subscale scores for five different time intervals spanning a 5-year period. The analytical results indicated that the pain and physical function subscales of the HHS are more responsive than those of the SF-36 for short-term (within 1 year post-surgery) measurements but are less responsive for long-term measurements. At various follow-up intervals, the HHS and the SF-36 significantly differed in ES of changes in pain and physical function subscale scores for patients with one co-morbidity and for patients with two or more co-morbidities. For long-term evaluation of THA patients, clinicians and health researchers should weight both measures equally and should also consider co-morbidities.
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