Table 4 Net reclassification improvement among patients in the highest quartile of diurnal temperature range (> 12.6 °C) after adjustment for serum calcium concentration.

From: The synergy between diurnal temperature range and calcium concentration help to predict hospital mortality in patients with acute myocardial infarction

Predicted risk (without serum calcium)

Reclassified predicted risk (with serum calcium)

Reclassified (%)

 < 15%

15–30%

 > 30%

Increased risk

Decreased risk

Net correctly reclassified (%)

Incidence of in-hospital death

 < 15%

36

10

0

   

15–30%

0

2

3

30.9%

2.4%

28.6%

 > 30%

0

1

0

13

1

 

Incidence of survival

 < 15%

835

31

4

   

15–30%

13

9

5

4.4%

1.6%

2.9%

 > 30%

1

0

3

40

14

 
  1. Net reclassification improvement (categorical) = 20.2% (95% confidence interval, 7.5–32.9; P = 0.001). Net reclassification improvement (continuous) = 57.2% (95% confidence interval, 30.0–84.3; P < 0.001).
Back to article page