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Table 6 Operative risk categories with corresponding cumulative risk score for 90-day In-Hospital Mortality after cardiac surgery for the risk groups calculated from the roc curve, cumulative risk score*

From: Erratum to: Development of the Post Cardiac Surgery (POCAS) prognostic score

Risk score

Observed no.

Predicted no.

% probability (95 % CI)

90-Day In-Hospital Mortality (%)

Operative risk categories

% probability (95 % CI)

<75

1

1

0.92 (0.89–0.95)

0.4

Low

2.33 (2.19–2.46)

75–81

3

3

2.10 (2.03–2.16)

1.5

82–90

11

11

4.82 (4.62–5.02)

6.1

91–100

12

12

12.99 (12.34–13.65)

11.1

Medium

16.32 (15.25–17.38)

101–105

11

10

25.53 (24.40–26.66)

28.2

106–128

29

28

56.22 (51.86–60.58)

55.8

High

56.22 (51.86–60.58)

>128

13

13

94.98 (92.75–97.21)

100.0

Very high

94.98 (92.75–97.21)

  1. CI confidence interval, n number