Table 4 Comparison of predictive performance of different predictive models for 30-day all-cause mortality in the ICU among patients with SCI.

From: Association between prognosis and calcium trajectories in patients with spinal cord injury based on MIMIC-IV data

Predictive model

C-statistic (95% CI)

ΔC (P value)

Overall NRI (95% CI)

Event NRI (95% CI)

Non-event NRI (95% CI)

NRI P value

Model 1

0.723 (0.658–0.788)

     

Model 2

0.631 (0.562–0.699)

 − 0.092 (< 0.001)

    

Model 3

0.765 (0.702–0.828)

0.042 (0.035)

0.236 (0.089–0.383)

0.185 (0.052–0.318)

0.051 (− 0.012–0.114)

0.002

Model 4

0.782 (0.721–0.843)

0.059(0.018)

0.274 (0.118–0.430)

0.213 (0.075–0.351)

0.061 (− 0.008–0.130)

 < 0.001

  1. Model 1: SOFA, SAPSⅡ, CCI.
  2. Model 2: calcium trajectory.
  3. Model 3: model 1, calcium trajectory.
  4. Model 4: model 3, age, sex, Diabetes, Hypertension.
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