Outcome evaluations are of primary concern in contemporary medical practice
. Questionnaires are being used increasingly to provide input data for such
outcomes evaluation. This study comprised 50 primary total hip arthroplast
ies in 36 patients who had undergone the procedure at least 12 months befor
e enrollment. Each patient completed a self-report Harris Hip Score (HHS) 3
0 days before a formal evaluation by an independent orthopaedic surgeon tha
t included a HHS. Comparison was made between the completed responses to th
e individual items oil the self-report HHS and surgeon-assessed HHS. Concor
dance of item response and kappa statistic were calculated. Overall the sel
f-report and surgeon-assessed HHS showed excellent concordance. The results
of this study support the use of the HHS as a self-report instrument.