Study of (a,ax) Reactions Induced by 200 MeV a-Particles

This work was supported by the National Science Foundation Grant NSF PHY 81-14339 and by Indiana Universit

Elastic Scattering of 100 MeV Polarized Protons from 4-He

This research was sponsored by the National Science Foundation Grant NSF PHy 87-1440

Neutron Knockout Reactions

This work was supported by the National Science Foundation Grant NSF PHY 81-14339 and by Indiana Universit

Neutron Knockout Reactions

This work was supported by the National Science Foundation Grant NSF PHY 78-22774 A02 & A03 and by Indiana Universit

A Pragmatic Approach to the Continuum Spectrum in Quasifree Scattering

This work was supported by the National Science Foundation Grant NSF PHY 81-14339 and by Indiana Universit

A Measurement of the Longitudinal Acceptance of the K600 Magnetic Spectrometer

This research was sponsored by the National Science Foundation Grant NSF PHY-931478

The development of a short measure of physical function for knee OA KOOS-Physical Function Shortform (KOOS-PS) – an OARSI/OMERACT initiative

SummaryObjectiveTo develop a short measure of physical function for knee osteoarthritis (OA) using multi-national data from individuals with varying degrees of severity of knee OA.MethodsRasch analysis, based on the partial credit model, was conducted on Knee injury and Osteoarthritis Outcome Score and Western Ontario McMaster Universities' Osteoarthritis Index data from individuals with knee OA, ranging from community to pre-total knee replacement samples from five countries. Fit of the data to the Rasch model was evaluated by overall model fit and item-level fit statistics (χ2, size of residual, F-test). Invariance across age, gender and country was evaluated. Unidimensionality was evaluated by factor analysis of residuals. The derived short measure was further tested for fit through re-analyses in individual sub-samples. A nomogram converting raw summed scores to Rasch-derived interval scores was developed.ResultsThirteen data sets were included (n=2145), with an age range of 26–95 years, and a male/female ratio of 1:1.4. The final model included seven of the original 22 items. From easiest to most difficult, the items (logit) were as follows: rising from bed (1.366), putting on socks/stockings (1.109), rising from sitting (0.537), bending to the floor (0.433), twisting/pivoting on injured knee (−0.861), kneeling (−1.292) and squatting (−1.292). Sub-sample analyses confirmed findings.ConclusionBased on the use of accepted Rasch-based measurement methods and the compliment of countries, languages and OA severity represented in this study, our seven item short measure of physical function for knee OA is likely generalizable and widely applicable. This measure has potential for use as the function component in an OA severity scoring system

Analyzing Power of the Proton Continuum for 150 and 200 MeV Polarized Protons on 12-C and 58,62-Ni

This work was supported by the National Science Foundation Grants NSF PHY 78-22774 A03, NSF PHY 81-14339, and by Indiana Universit

Neutron Knockout Reactions at Medium Energies

Supported by the National Science Foundation and Indiana Universit