Letter/Communication
Response to letter regarding article, "Neurological, functional, and cognitive stroke outcomes in Mexican Americans"
Stroke (1970), v 45(8), pp e168-e168
Aug 2014
PMID: 24947285
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We thank Chen and colleagues1 for their sincere interest in our article,2 including their attention to the supplementary material. We disagree with their assertion that the activity of daily living (ADL) and instrumental activity of daily living (IADL) subscores should be treated as ordinal variables; these subscores have 22 and 46 distinct values, respectively, such that an analysis that treats these variables as ordinal is unwarranted.3 Although an ordinal regression analysis may be appropriate for the individual items of the ADL and IADL scales from a statistical standpoint, ordinal regression would give odds ratios to quantify ethnic differences. Odds ratios are less informative in the context of the total ADL/IADL score, which is the primary outcome in the main text of the article. The results for individual items, obtained from linear regression with robust standard errors, are informative about shifts in the means of the individual items.4,5 From a lay perspective, the differences given in the supplementary material allow the reader to understand how ethnic differences in an individual item contribute to the ethnic difference in the average of all the items (total ADL/IADL score). As can be observed from the supplementary material, ethnic differences in the total AIDL/ADL score are because of differences across all of the items, rather than driven by a few items, whereas ethnic differences in National Institutes of Health Stroke Scale are because of a subset of the items.
Metrics
Details
- Title
- Response to letter regarding article, "Neurological, functional, and cognitive stroke outcomes in Mexican Americans"
- Creators
- Lynda D Lisabeth - University of MichiganBrisa N Sánchez - University of MichiganLewis B Morgenstern - University of Michigan
- Publication Details
- Stroke (1970), v 45(8), pp e168-e168
- Publisher
- United States
- Number of pages
- 1
- Grant note
- R01 NS038916 / NINDS NIH HHS
- Resource Type
- Letter/Communication
- Language
- English
- Academic Unit
- Epidemiology and Biostatistics
- Web of Science ID
- WOS:000340297300007
- Scopus ID
- 2-s2.0-84905260417
- Other Identifier
- 991014878494004721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Clinical Neurology
- Peripheral Vascular Disease