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Table 3 Prediction model performance in the test set, according to readmission outcomes

From: Contribution of social factors to readmissions within 30 days after hospitalization for COPD exacerbation

Model performance measures

Overall 30-day readmission

Early readmission

(within 7 days after discharge)

Late readmission

(8–30 days after discharge)

 

Reference model

Optimized model

Reference model

Optimized model

Reference model

Optimized model

C statistic (95%CI)

0.57

(0.52 to 0.62)

0.58

(0.54 to 0.63)

0.57

(0.50 to 0.64)

0.63

(0.56 to 0.70)

0.65

(0.60 to 0.71)

0.68

(0.62 to 0.73)

Integrated discrimination improvement (95%CI)

–

0.009

(−0.001 to 0.020)

–

0.018

(0.003 to 0.032)

–

0.026

(0.009 to 0.042)

Continuous net reclassification improvement, (95%CI)

–

0.135

(− 0.031 to 0.302)

–

0.298

(0.060 to 0.537)

–

0.243

(0.028 to 0.459)

  1. Abbreviation: CI Confidence interval
  2. Models were derived from 1000 bootstrap resamples
  3. For the model comparisons, the integrated discrimination improvement and net reclassification improvement values of > 0 indicate that, compared to the reference model, the optimized model has better discrimination and reclassification performance
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BMC Pulmonary Medicine

ISSN: 1471-2466

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