Document Detail

Stroke Impact Scale-16: A brief assessment of physical function.
MedLine Citation:
PMID:  12552047     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To 1) develop a short instrument (Stroke Impact Scale-16 [SIS-16]) to assess physical function in patients with stroke at approximately 1 to 3 months poststroke using items from the composite physical domain of the Stroke Impact Scale (SIS) version 3.0, and 2) compare the SIS-16 and a commonly used disability measure, the Barthel Index (BI), in terms of their ability to discriminate disability. METHODS: A total of 621 subjects enrolled in the GAIN Americas randomized stroke trial were included in this study. Rasch analysis, which models the probability of a subject's response to an item using both subject ability and item difficulty, was used to construct the SIS-16, describe its properties, and compare its ordering and range of item difficulties to those of the BI. Box plots and analysis of variance were used to examine differences in BI and SIS-16 scores across modified Rankin categories. RESULTS: The study sample had an average age of 68 +/- 12.4 years and 56% were men. Stroke diagnoses were classified as minor in 91 patients (NIH Stroke Scale score [NIHSS] 0 to 5), moderate in 304 (NIHSS 6 to 13), and major in 226 (NIHSS >/= 14). Twelve of the original 28 items in the SIS version 3.0 composite physical domain were eliminated to produce the SIS-16, with a minimal loss of reliability. As compared to the BI, the SIS-16 contains more difficult items that can differentiate patients with less severe limitations, and therefore has less pronounced ceiling effects. SIS-16 scores were significantly different across Rankin levels 0 to 1, 2, 3, 4, and 5, whereas BI was significantly different only across Rankin levels 0 to 2, 3, 4, and 5. CONCLUSION: Compared to the BI, the SIS-16 is an excellent collection of items suitable for assessing a wide range of physical function limitations of patients with stroke at 1 to 3 months poststroke. Because of a less pronounced ceiling effect, the SIS-16 can differentiate lower levels of disability as compared to the BI.
P W Duncan; S M Lai; R K Bode; S Perera; J DeRosa
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neurology     Volume:  60     ISSN:  1526-632X     ISO Abbreviation:  Neurology     Publication Date:  2003 Jan 
Date Detail:
Created Date:  2003-01-28     Completed Date:  2003-02-05     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0401060     Medline TA:  Neurology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  291-6     Citation Subset:  AIM; IM    
Brooks Center for Rehabilitation Studies, University of Florida, North Florida/South Georgia Department of Veteran Affairs, Gainesville, FL, USA.
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MeSH Terms
Double-Blind Method
Glycine / antagonists & inhibitors
Glycine Agents / therapeutic use
Health Status Indicators*
Indoles / therapeutic use
Predictive Value of Tests
Severity of Illness Index
Stroke / diagnosis*,  drug therapy,  physiopathology*
Treatment Outcome
United States
Reg. No./Substance:
0/GV 150526A; 0/Glycine Agents; 0/Indoles; 56-40-6/Glycine

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