TY - JOUR
T1 - Psychometric comparison of the PROMIS physical function CAT with the FAAM and FFI for measuring patient-reported outcomes
AU - Hung, Man
AU - Baumhauer, Judith F.
AU - Brodsky, James W.
AU - Cheng, Christine
AU - Ellis, Scott J.
AU - Franklin, Jeremy D.
AU - Hon, Shirley D.
AU - Ishikawa, Susan N.
AU - Latt, L. Daniel
AU - Phisitkul, Phinit
AU - Saltzman, Charles L.
AU - SooHoo, Nelson F.
AU - Hunt, Kenneth J.
PY - 2014/6
Y1 - 2014/6
N2 - Background: Selecting optimal patient-reported outcome (PRO) instruments is critical to improving the quality of health care. The purpose of this study was to compare the reliability, responsiveness, and efficiency of three PRO measures: the Foot and Ankle Ability Measure-Activity of Daily Living subscale (FAAM-ADL), the Foot Function Index 5-point verbal rating scale (FFI-5pt), and the PROMIS Physical Function computerized adaptive test (PF CAT). Methods: Data were aggregated from 10 clinical sites in the AOFAS's National Orthopaedic Foot and Ankle Research (OFAR) Network from 311 patients who underwent elective surgery for a disorder of the foot or ankle. Patients were administered the FAAM-ADL, FFI-5pt, and PF CAT at their preoperative visit and at 6 months after surgery. Reliabilities were evaluated using a Rasch model. Responsiveness was calculated using paired samples t test and efficiency was recorded as number of seconds to complete the instrument. Results: Similar reliabilities were found for the three instruments. Item reliabilities for FAAM-ADL, FFI-5pt, and PF CAT were all .99. Pearson reliabilities for FAAM-ADL, FFI-5pt, and PF CAT were .95, .93, and .96, respectively. On average, patients completed the FAAM-ADL in 179 seconds, the FFI-5pt in 194 seconds, and the PF CAT in 44 seconds, (P < .001). The PF CAT and FAAM-ADL showed significant improvement (P = .01 and P = .001, respectively) in patients' physical function after treatment; the FFI-5pt did not show improvement. Conclusions: Overall, the PF CAT performed best in terms of reliability, responsiveness, and efficiency in this broad sample of foot and ankle patients. It can be a potential replacement for the conventional PRO measures, but further validation is needed in conjunction with the PROMIS Pain instruments.
AB - Background: Selecting optimal patient-reported outcome (PRO) instruments is critical to improving the quality of health care. The purpose of this study was to compare the reliability, responsiveness, and efficiency of three PRO measures: the Foot and Ankle Ability Measure-Activity of Daily Living subscale (FAAM-ADL), the Foot Function Index 5-point verbal rating scale (FFI-5pt), and the PROMIS Physical Function computerized adaptive test (PF CAT). Methods: Data were aggregated from 10 clinical sites in the AOFAS's National Orthopaedic Foot and Ankle Research (OFAR) Network from 311 patients who underwent elective surgery for a disorder of the foot or ankle. Patients were administered the FAAM-ADL, FFI-5pt, and PF CAT at their preoperative visit and at 6 months after surgery. Reliabilities were evaluated using a Rasch model. Responsiveness was calculated using paired samples t test and efficiency was recorded as number of seconds to complete the instrument. Results: Similar reliabilities were found for the three instruments. Item reliabilities for FAAM-ADL, FFI-5pt, and PF CAT were all .99. Pearson reliabilities for FAAM-ADL, FFI-5pt, and PF CAT were .95, .93, and .96, respectively. On average, patients completed the FAAM-ADL in 179 seconds, the FFI-5pt in 194 seconds, and the PF CAT in 44 seconds, (P < .001). The PF CAT and FAAM-ADL showed significant improvement (P = .01 and P = .001, respectively) in patients' physical function after treatment; the FFI-5pt did not show improvement. Conclusions: Overall, the PF CAT performed best in terms of reliability, responsiveness, and efficiency in this broad sample of foot and ankle patients. It can be a potential replacement for the conventional PRO measures, but further validation is needed in conjunction with the PROMIS Pain instruments.
KW - Computerized adaptive testing
KW - FAAM
KW - FFI
KW - OFAR
KW - PROMIS
KW - Patient-reported outcomes
KW - Physical function
KW - Psychometrics
UR - http://www.scopus.com/inward/record.url?scp=84903511872&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903511872&partnerID=8YFLogxK
U2 - 10.1177/1071100714528492
DO - 10.1177/1071100714528492
M3 - Article
AN - SCOPUS:84903511872
SN - 1071-1007
VL - 35
SP - 592
EP - 599
JO - Foot and Ankle International
JF - Foot and Ankle International
IS - 6
ER -