Table 2

Rates of operative death per year by consultant involvement, HDU/ITU care or time to operation

Rate	Description of rate	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Operative death rate	Number of SASM operative deaths with a diagnosis of peptic ulcer disease per SMR01 operative patient with a diagnosis of peptic ulcer disease	0.048	0.043	0.030	0.041	0.030	0.034	0.038	0.029	0.029	0.036	0.031	0.028	0.028
Operative death with consultant involvement rate	Number of SASM operative deaths with a diagnosis of peptic ulcer disease with either consultant surgeon operating or assisting per SASM operative death with a diagnosis of peptic ulcer disease	0.400	0.507	0.566	0.563	0.627	0.655	0.727	0.652	0.684	0.707	0.738	0.682	0.734
Operative death receiving HDU/ITU care rate	Number of SASM operative deaths with a diagnosis of peptic ulcer disease receiving either ITU or HDU care per SASM operative death with a diagnosis of peptic ulcer disease	0.527	0.676	0.707	0.795	0.782	0.874	0.835	0.787	0.823	0.913	0.875	0.848	0.844
Operative death with operation within 2 h rate	Number of SASM operative deaths with a diagnosis of peptic ulcer disease with operation within 2 h per SASM operative death with a diagnosis of peptic ulcer disease	0.103	0.106	0.131	0.188	0.155	0.118	0.124	0.157	0.203	0.283	0.213	0.227	0.281
Operative death with adverse event rate	Number of SASM operative deaths with a diagnosis of peptic ulcer disease with an adverse event either contributing to or causing the patient's death per SASM operative death with a diagnosis of peptic ulcer disease	NA	NA	0.303	0.313	0.209	0.286	0.223	0.101	0.215	0.130	0.213	0.197	0.141
Operative rate (all)	Number of SMR01 operative patients with a diagnosis of peptic ulcer disease per SMR01 patient with a diagnosis of peptic ulcer disease	0.893	0.896	0.887	0.902	0.909	0.916	0.910	0.914	0.910	0.911	0.931	0.914	0.917
Operative rate (deaths)	Number of SASM operative deaths with a diagnosis of peptic ulcer disease per SASM death with a diagnosis of peptic ulcer disease	0.657	0.599	0.596	0.651	0.724	0.717	0.699	0.730	0.664	0.786	0.762	0.742	0.771

HDU/ITU, high dependency/intensive therapy unit; NA, data not available; SASM, Scottish Audit of Surgical Mortality.