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 treatment a | ||||||
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 consultant a | 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 consultant a | 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%) |
