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Table 6 Performance indices for the clinical prediction rule

From: A diagnostic support tool for lumbar spinal stenosis: a self-administered, self-reported history questionnaire

 

Estimate

Index

Derivation Data Set (n = 234)

Validation Data Set (n = 250)

Sensitivity

0.855

0.843

Specificity

0.791

0.781

Likelihood Ratio

  

Positive Test Result

1.951

1.886

Negative Test Result

0.201

0.214

Area under the ROC curve

0.797

0.782

  1. Positive criteria: Total score ≥ 4 (Q1–Q4) or Total score ≥ 1 (Q1–Q4) and ≥ 2 (Q5–Q10)
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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