01597nas a2200205   4500008004100000245009400041210006900135260001000204300001200214490000800226520086400234653003001098653000901128653003401137653001101171653003501182653004501217100001801262856011101280       2003                        eng d00aTen recommendations for advancing patient-centered outcomes measurement for older persons0 aTen recommendations for advancing patientcentered outcomes measu  cSep 2  a403-4090 v1393 aThe past 50 years have seen great progress in the measurement of patient-based outcomes for older populations. Most of the measures now used were created under the umbrella of a set of assumptions and procedures known as classical test theory. A recent alternative for health status assessment is item response theory. Item response theory is superior to classical test theory because it can eliminate test dependency and achieve more precise measurement through computerized adaptive testing. Computerized adaptive testing reduces test administration times and allows varied and precise estimates of ability. Several key challenges must be met before computerized adaptive testing becomes a productive reality. I discuss these challenges for the health assessment of older persons in the form of 10 "Ds": things we need to deliberate, debate, decide, and do.10a*Health Status Indicators10aAged10aGeriatric Assessment/*methods10aHumans10aPatient-Centered Care/*methods10aResearch Support, U.S. Gov't, Non-P.H.S.1 aMcHorney, C A  uhttp://iacat.org/content/ten-recommendations-advancing-patient-centered-outcomes-measurement-older-persons