Table 1 Hosmer-Lemeshow goodness of fit test for POSSUM for 30-day mortality
Deciles of risk (%) | Number of patients | Number of observed deaths | Number of expected deaths | Mean risk of predicted mortality | O:E (95% CI) | X2HL statistic |
|---|---|---|---|---|---|---|
0-10 | 1501 | 15 | 71.96 | 0.05 | 0.21 (0.12 – 0.36) | 47.36 |
10-20 | 514 | 19 | 72.88 | 0.14 | 0.26 (0.16 – 0.43) | 46.42 |
20-30 | 216 | 16 | 52.36 | 0.24 | 0.31 (0.17 – 0.53) | 33.33 |
30-40 | 133 | 9 | 45.64 | 0.34 | 0.20 (0.10 – 0.40) | 44.78 |
40-50 | 66 | 6 | 29.38 | 0.45 | 0.20 (0.09 – 0.49) | 33.54 |
50-60 | 51 | 8 | 27.61 | 0.54 | 0.29 (0.14 – 0.64) | 30.37 |
60-70 | 34 | 5 | 21.84 | 0.64 | 0.23 (0.09 – 0.61) | 36.29 |
70-80 | 22 | 7 | 16.40 | 0.75 | 0.43 (0.18 – 1.04) | 21.26 |
80-90 | 12 | 2 | 10.00 | 0.83 | 0.20 (0.05 – 0.81) | 38.40 |
90-100 | 3 | 1 | 2.87 | 0.96 | 0.35 (0.07 – 3.82) | 27.08 |
0-100 | 2552 | 88 | 350.94 |  | 0.25 (0.20 – 0.32) | 358.73 |