Measuring Stroke Impact with SIS: Construct Validity of SIS Telephone Administration |
| |
Authors: | Sooyeon Kwon Pamela Duncan Stephanie Studenski Subashan Perera Sue Min Lai Dean Reker |
| |
Institution: | (1) Department of Veterans Affair, Rehabilitation Outcomes Research Center (RORC), HSR&D and RR& D Center of Excellence, 1601 SW Archer Road (151 B), Gainesville, FL 32608, USA;(2) Pharmacy Health Care Administration, College of Pharmacy, University of Florida, USA;(3) Department of Aging and Geriatrics Research, College of Medicine, University of Florida, USA;(4) GRECC and HSR&D, Pittsburgh Veterans Affair Health Care System, USA;(5) Department of Medicine, University of Pittsburgh, PA, USA;(6) Division of Geriatric Medicine, University of Pittsburgh, Pittsburgh, PA, USA;(7) Preventive Medicine, University of Kansas Medical Center, Kansas City, KS, USA;(8) Kansas City Veterans Affair Medical Center, Kansas City, MO, USA;(9) Health Policy and Management Center on Aging, Kansas University Medical Center, Kansas City, MO, USA |
| |
Abstract: | Objectives: The purpose of this study was to examine the construct validity of the Stroke Impact Scale (SIS) using telephone mode of
administration. Methods: Stroke patients were identified using national VA administrative data and ICD-9 codes in 13 participating VA hospitals.
Stroke was confirmed by reviewing electronic medical records. Patients were administered SIS by telephone at 12-weeks post-stroke,
and administered the Functional Independence Measure (FIM) and SF-36V at 16 weeks post-stroke. The instrument’s convergent
validity and its ability to differentiate between groups of stroke patients with different disability levels were examined
using Pearson’s correlations and Kruskal–Wallis one way ANOVA tests. Results: All the relevant relationships yielded high correlation coefficients with statistical significance: 0.86 for FIM-motor vs.
SIS-ADL, and 0.77 for PF in SF-36V vs. SIS-PHYSICAL. The SIS presented better score discrimination and distribution for different
severity of stroke than FIM and SF-36V without severe ceiling and floor effects. Kruskal–Wallis tests showed the Physical
Component Score of SF-36V did not discriminate any disability levels. Physical functioning (PF) in SF-36V, FIM-motor, SIS-PHYSICAL,
SIS-16, and SIS-ADL showed better discrimination in person’s functioning. The pairwise comparisons showed that SIS-PHYSICAL,
SIS-16, and SIS-ADL discriminated more Rankin levels than FIM-motor and PF in SF-36V. Conclusions: SIS telephone survey had superior convergent validity and was better at differentiating between groups of stroke patients
with different disability levels than the FIM and SF-36V with no evidence of ceiling and floor effects. Telephone administration
of SIS would be a useful and cost-effective method to follow-up community dwelling veterans with stroke. |
| |
Keywords: | Disability Quality of life Stroke Stroke Impact Scale Telephone administration Validity |
本文献已被 SpringerLink 等数据库收录! |
|