Table 2. 30-day postoperative mortality rates for patients undergoing surgery or biliary stenting by age group, year of diagnosis, hospital workload, workload of main treating consultant, and specialty of main treating consultant (P-values are shown for statistically significant differences).
|
Resectiona |
Other surgerya |
Biliary stenta |
||||
|---|---|---|---|---|---|---|
| Factor | No. of cases | No. (%) of deaths | No. of cases | No. (%) of deaths | No. of cases | No. (%) of deaths |
| Age groups | P=0.016 | P=0.023 | ||||
| 0–39 | 1 | 0 | 6 | 0 | 5 | 0 |
| 40–49 | 14 | 2 (14%) | 24 | 3 (13%) | 19 | 2 (11%) |
| 50–59 | 30 | 1 (3%) | 109 | 9 (8%) | 78 | 7 (9%) |
| 60–69 | 63 | 4 (6%) | 215 | 36 (17%) | 202 | 22 (11%) |
| 70–79 | 21 | 3 (14%) | 239 | 57 (24%) | 261 | 51 (20%) |
| ⩾80 | 2 | 0 | 99 | 33 (33%) | 175 | 45 (26%) |
| Year of diagnosis | P<0.001 | P=0.001 | ||||
| 1993 | 21 | 2 (10%) | 158 | 36 (23%) | 119 | 21 (18%) |
| 1994 | 23 | 3 (13%) | 153 | 43 (28%) | 116 | 31 (27%) |
| 1995 | 24 | 3 (13%) | 129 | 22 (17%) | 148 | 29 (20%) |
| 1996 | 32 | 1 (3%) | 144 | 23 (16%) | 183 | 25 (14%) |
| 1997 | 31 | 1 (3%) | 108 | 14 (13%) | 174 | 21 (12%) |
| Caseload of hospital of treatmenta | ||||||
| 1 case | 0 | N/A | 0 | N/A | 0 | N/A |
| 2–9 cases | 0 | N/A | 10 | 2 (20%) | 1 | 0 |
| 10–29 cases | 0 | N/A | 33 | 12 (36%) | 18 | 4 (22%) |
| ⩾30 cases | 131 | 10 (8%) | 649 | 124 (19%) | 721 | 123 (17%) |
| Caseload of main treating consultanta | P=0.014 | |||||
| 1 case | 7 | 1 (14%) | 102 | 21 (21%) | 88 | 18 (21%) |
| 2–4 cases | 11 | 3 (27%) | 177 | 37 (21%) | 112 | 24 (21%) |
| 5–9 cases | 18 | 1 (6%) | 176 | 47 (27%) | 108 | 16 (15%) |
| ⩾10 cases | 95 | 5 (5%) | 237 | 33 (14%) | 432 | 69 (16%) |
| Specialty of main treating consultanta | P=0.002 | |||||
| Specialist | 51 | 1 (2%) | 86 | 6 (7%) | 120 | 13 (11%) |
| Clinician with an interest in the pancreas | 32 | 2 (6%) | 50 | 7 (14%) | 33 | 7 (21%) |
| Nonspecialist | 48 | 7 (15%) | 556 | 125 (23%) | 587 | 107 (18%) |
| Total | 131 | 10 (8%) | 692 | 138 (20%) | 740 | 127 (17%) |
a
Information derived from linked hospital discharge records does not include outpatient diagnostic or procedural information. Note that patients can appear in more than one of the treatment groups. N/A: not applicable.