Evidence map›Paper›PMID 24073978›Full record

Trial reportInternational journal of clinical practice2013

Evaluation of an 8-item Severe Impairment Battery (SIB-8) vs. the full SIB in moderate to severe Alzheimer's disease patients participating in a donepezil study.

F A Schmitt, J Saxton, S H Ferris, J Mackell, Y Sun

Open access · greenAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in International journal of clinical practice, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
0.2field-weighted citation impact, top 45% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 5 institutions in 1 country.

F A SchmittDepartments of Neurology, Psychiatry, Behavioral Science, and Psychology, Sanders-Brown Center on Aging/Alzheimer's Disease Center, Lexington, KY, USA.
J Saxton
S H Ferris
J Mackell
Y Sun
Alzheimer’s Disease Neuroimaging Initiative · USEisai (United States) · USNYU Langone Health · USPfizer (United States) · USUniversity of Pittsburgh · US

Funding

TRIAL OF VALPROATE TO ATTENUATE THE PROGRESSION OF ADU01AG010483 · NIA · UNIVERSITY OF ROCHESTER · PI AISEN, PAUL S. · 1991 to 2012
$116.2M
RECRUITMENT COREU19AG010483 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI FELDMAN, HOWARD · 2013 to 2020
$80.6M
Prevention of Alzheimer's Diseae by Vitamin E and SeleniumR01AG019241 · NIA · UNIVERSITY OF KENTUCKY · PI SCHMITT, FREDERICK · 2001 to 2012
$12.1M
NIA NIH HHS 1-UO1 AG10483NIA NIH HHS R01 AG019241NIA NIH HHS U01 AG010483NIA NIH HHS U19 AG010483
6 · The paper itself

Abstract

aimThe Severe Impairment Battery (SIB), a reliable cognitive measure for evaluating treatment response in advanced Alzheimer's disease (AD), takes approximately 20 min to administer. A recently derived 8-item version of the SIB - the SIB-8 - which takes about 3 min to administer, may represent a more convenient tool for use in clinical practice. The current analyses further explored the SIB-8 scale with respect to its validity and sensitivity.

methodsA post hoc analysis was performed using data from a 24-week trial of donepezil 23 mg/day and 10 mg/day in > 1400 patients with moderate to severe AD [baseline Mini-Mental State Examination (MMSE) score 0-20]. Treatment effects on cognition (patterns of score change) were assessed using the full SIB and SIB-8 in the total study population and subgroups based on concomitant memantine use and baseline MMSE. Internal consistency/agreement and correlations between the SIB and SIB-8 and other clinical end points were evaluated.

resultsAssessment of score changes from baseline to week 24 with donepezil (23 or 10 mg/day) demonstrated comparable patterns of change when using the SIB-8 and the full SIB, despite inherent differences in the total score ranges for the two scales. Internal consistency/agreement between the full SIB and SIB-8 was good (Cronbach's alphas: 0.77-0.95). SIB-8 scores reliably correlated with SIB total scores (r = 0.859, baseline; r = 0.900, week 24; p < 0.0001), as well as MMSE scores (r = 0.7163, baseline; r = 0.7963, week 24; p < 0.0001). Scores on both SIB scales were moderately associated with functional measures at baseline and week 24.

conclusionsIn this post hoc analysis, similar treatment effects were measured by the full SIB and the SIB-8. Very good internal consistency/agreement and strong correlations between the SIB and the more rapid and convenient SIB-8 indicate that the SIB-8 may be a useful and efficient clinical proxy for the full SIB in evaluating treatment response in patients with advanced AD.

Indexed as

Activities of Daily LivingAlzheimer DiseaseAnalysis of VarianceCognition DisordersDonepezilDouble-Blind MethodHumansIndansNeuropsychological TestsNootropic AgentsPiperidinesSeverity of Illness IndexTreatment OutcomeDonepezilIndansNootropic AgentsPiperidines

Identifiers

PMID24073978
PMCPMC3930878
OpenAlexW2015378065

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.