Table 7. Comparing morbidity predicted by P-POSSUM scoring to actual morbidity.

P-POSSUM, Portsmouth-POSSUM; POSSUM, Physiological and Operative Severity Score for the Enumeration of Mortality and Morbidity.

P-POSSUM predicted morbidity	Number of patients	Predicted number of morbidity	Observed number of morbidity	Observed:Expected
0.00-0.10	0	0	0	0
0.11-0.20	0	0	0	0
0.21-0.30	0	0	0	0
0.31-0.40	0	0	0	0
0.41-0.50	1	1	0	0
0.51-0.60	8	5	5	1
0.61-0.70	50	33	24	0.73
0.71-0.80	52	37	32	0.86
0.81-0.90	39	33	31	0.94
0.91-1.00	0	0	0	0
0.00-1.00	150	109	92	0.84