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Predicting Functional Outcome Based on Linked Data After Acute Ischemic Stroke: S-SMART Score.

Tae Jung Kim1, Ji Sung Lee2, Mi-Sun Oh3

  • 1Department of Neurology, Seoul National University Hospital, 101 Daehakno, Jongno-Gu, Seoul, 03080, South Korea.

Translational Stroke Research
|April 20, 2020
PubMed
Summary
This summary is machine-generated.

A new S-SMART score predicts good functional outcomes after ischemic stroke. This tool helps clinicians estimate patient recovery and plan stroke care effectively.

Keywords:
Functional outcomeIschemic strokePrediction scoreStroke registry

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Area of Science:

  • Neurology
  • Clinical Prediction Modeling
  • Public Health

Background:

  • Accurate outcome prediction is crucial for effective stroke management and long-term care planning.
  • Existing prediction tools may lack generalizability or comprehensive validation.
  • Developing a reliable score for good functional outcome after ischemic stroke is needed.

Purpose of the Study:

  • To develop and validate a novel prediction score for good functional outcome (modified Rankin Scale score ≤2) at 3 months post-ischemic stroke.
  • To identify key predictors of favorable outcomes in a large patient cohort.
  • To assess the score's performance through external geographic and temporal validations.

Main Methods:

  • Utilized linked data from 22,005 acute ischemic stroke patients (July 2007-December 2014) for score derivation.
  • Identified predictors including stroke severity, sex, mechanism, age, pre-stroke mRS, and reperfusion therapy.
  • Validated the S-SMART score using area under the receiver operating characteristic curve (AUC) and calibration tests in external datasets.

Main Results:

  • The S-SMART score, totaling 34 points, identified key predictors for good 3-month functional outcomes.
  • Achieved high predictive performance with an AUC of 0.805 in the derivation group and 0.812 in the geographic validation group.
  • Demonstrated strong performance in the temporal validation group (AUC 0.812) with good calibration.

Conclusions:

  • The S-SMART score is a validated and practical tool for predicting good functional outcomes after ischemic stroke.
  • This score can aid clinicians in estimating patient prognosis and informing stroke care plans.
  • The S-SMART score offers a reliable method for outcome prediction in clinical settings.