Table 3 Results of POSSUM Mortality calculation (R1) compared to observed mortality (outcome 4) and to the rate of severe morbidity and death (outcome 3 +4) in 137 patients with gastrectomy and D2-lymphadenectomy.
From: Evaluation of POSSUM scoring system in patients with gastric cancer undergoing D2-gastrectomy
| Â | Possum Mortality Risk (R1) | patients | expected death | observed death outcome = 4 | Observed morbidity and death outcome = 3+4 | ||
|---|---|---|---|---|---|---|---|
| Â | (%) | n | n | n | % | n | % |
|  | 0–10 | 21 | 1 | 0 | 0 | 3 | 14,3 |
| Â | 38675 | 51 | 7 | 1 | 2,0 | 7 | 13,7 |
low risk | 0 – 20 | 72 |  | 1 | 1, 0 | 10 | 13, 9 |
|  | 21–30 | 38 | 9 | 3 | 7,8 | 9 | 23,7 |
|  | 31–40 | 19 | 6 | 2 | 10,5 | 4 | 21,1 |
med risk | 21–40 | 57 |  | 5 | 8, 8 | 13 | 22, 8 |
|  | 41–60 | 4 | 1 | 1 | 25,0 | 1 | 25,0 |
|  | 71–100 | 4 | 2 | 1 | 25,0 | 3 | 75,0 |
high risk | > 40 | 8 | Â | 2 | 25, 0 | 4 | 50, 0 |
total | Â | 137 | 29 | 8 | Â | 27 | Â |