Table 2 Characteristics of Patients Undergoing Hepatobiliary Resections from 2009 to 2015, According to Hospital Volume Categories
Hospital Volume Categories | ||||||
|---|---|---|---|---|---|---|
Very Low (1–10) | Low (11–20) | Medium (21–40) | High (41–100) | Very High (> 100) | ||
Total Number of Patients | N | 9734 | 4953 | 4648 | 6555 | 5224 |
Minor Resection | N | 5526 (56.8) | 2473 (49.9) | 2002 (43.1) | 2156 (32.9) | 1684 (32.2) |
Major Resection | N | 4208 (43.2) | 2480 (50.1) | 2646 (56.9) | 4399 (67.1) | 3540 (67.8) |
Annual Number of Hospitalsa | Mean ± STD | 403.3 ± 12.3 | 50.1 ± 5.2 | 24 ± 2.2 | 14.6 ± 1.6 | 5.4 ± 1.0 |
Annual Hospital Volume | Median (IQR) | 3 (1–5) | 13 (12–16) | 27 (23–31) | 63.5 (49–78) | 119.5 (108–141) |
Hospital to hospital transferb | ||||||
Transfer-in | N (%) | 176 (1.81) | 109 (2.20) | 142 (3.06) | 418 (6.38) | 322 (6.16) |
Transfer-out | N (%) | 448 (4.60) | 205 (4.14) | 187 (4.02) | 318 (4.85) | 206 (3.94) |
Demographics | ||||||
Age (Years) | Mean ± STD | 65.09 ± 0.12 | 64.29 ± 0.17 | 62.9 ± 0.19 | 61.46 ± 0.16 | 60.4 ± 10.18 |
Age ≥ 65 Years | N (%) | 5683 (58.38) | 2785 (56.23) | 2419 (52.04) | 3098 (47.26) | 2301 (44.05) |
Female Sex | N (%) | 4248 (43.64) | 2098 (42.36) | 1947 (41.89) | 2837 (43.28) | 2395 (45.85) |
Medical Indication | ||||||
Metastatic Disease | N (%) | 4664 (47.91) | 2439 (49.24) | 2221 (47.78) | 2764 (42.17) | 1921 (36.77) |
Malignant Hepatobiliary Neoplasm | N (%) | 2553 (26.23) | 1442 (29.11) | 1444 (31.07) | 2362 (36.03) | 2210 (42.3) |
Benign Hepatobiliary Disease | N (%) | 711 (7.3) | 344 (6.95) | 366 (7.87) | 583 (8.89) | 452 (8.65) |
Other Medical Indication | N (%) | 1806 (18.55) | 728 (14.7) | 617 (13.27) | 846 (12.91) | 641 (12.27) |
Comorbidities | ||||||
Chronic Heart Disease | N (%) | 1152 (11.83) | 573 (11.57) | 466 (10.03) | 569 (8.68) | 506 (9.69) |
Hypertension | N (%) | 4654 (47.81) | 2197 (44.36) | 1980 (42.6) | 2767 (42.21) | 2244 (42.96) |
Peripheral Vascular Disease | N (%) | 167 (1.72) | 71 (1.43) | 57 (1.23) | 90 (1.37) | 74 (1.42) |
Chronic Lung Disease | N (%) | 737 (7.57) | 299 (6.04) | 301 (6.48) | 347 (5.29) | 327 (6.26) |
Chronic Liver Disease | N (%) | 947 (9.73) | 514 (10.38) | 541 (11.64) | 843 (12.86) | 798 (15.28) |
Severe Kidney Disease | N (%) | 853 (8.76) | 383 (7.73) | 355 (7.64) | 414 (6.32) | 258 (4.94) |
Diabetes Mellitus | N (%) | 1969 (20.23) | 978 (19.75) | 851 (18.31) | 1151 (17.56) | 1465 (28.04) |
Obesity | N (%) | 767 (7.88) | 383 (7.73) | 321 (6.91) | 494 (7.54) | 477 (9.13) |
Coagulopathy | N (%) | 109 (1.12) | 67 (1.35) | 69 (1.48) | 79 (1.21) | 27 (0.52) |
Type of Surgery | ||||||
Trisectionectomy | N (%) | 463 (4.76) | 393 (7.93) | 515 (11.08) | 989 (15.09) | 926 (17.73) |
Hemihepatectomy | N (%) | 3745 (38.47) | 2087 (42.14) | 2131 (45.85) | 3410 (52.02) | 2614 (50.04) |
Multiple Segmentectomy | N (%) | 3308 (33.98) | 1517 (30.63) | 1186 (25.52) | 1272 (19.41) | 1035 (19.81) |
Bisegmentectomy | N (%) | 2218 (22.79) | 956 (19.3) | 816 (17.56) | 884 (13.49) | 649 (12.42) |
Extent of Surgery | ||||||
Resection of Arteries/Veins | N (%) | 119 (1.22) | 101 (2.04) | 147 (3.16) | 431 (6.58) | 398 (7.62) |
Biliodigestive Anastomosis | N (%) | 323 (3.32) | 299 (6.04) | 375 (8.07) | 842 (12.85) | 946 (18.11) |
Resection Other Organ | N (%) | 781 (8.02) | 494 (9.97) | 457 (9.83) | 626 (9.55) | 569 (10.89) |