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©The Author(s) 2015.
World J Gastroenterol. Jan 28, 2015; 21(4): 1234-1242
Published online Jan 28, 2015. doi: 10.3748/wjg.v21.i4.1234
Published online Jan 28, 2015. doi: 10.3748/wjg.v21.i4.1234
Table 2 Patient characteristics according to hospital volume n (%)
| Variables | Hospital volume | Hospital volume | ||||
| Q1-Q2 | Q3-Q4 | P value | Q1-Q3 | Q4 | P value | |
| No. of annual cases | ≤ 225 | > 225 | ≤ 377 | > 377 | ||
| No. of patients | 3137 | 2969 | 4717 | 1389 | ||
| No. of hospitals | 54 | 8 | 59 | 3 | ||
| Sex | 0.295 | 0.295 | ||||
| Male | 2954 (94.2) | 2814 (94.8) | 4465 (94.7) | 1303 (93.8) | ||
| Female | 183 (5.8) | 155 (5.2) | 252 (5.3) | 86 (6.2) | ||
| Age (yr) | 0.182 | 0.56 | ||||
| < 40 | 88 (2.8) | 101 (3.4) | 142 (3.0) | 47 (3.3) | ||
| 40-49 | 715 (22.8) | 698 (23.5) | 1108 (23.3) | 305 (22.0) | ||
| 50-59 | 1194 (36.9) | 1078 (36.3) | 1762 (37.1) | 510 (36.7) | ||
| 60-69 | 629 (20.1) | 649 (21.9) | 976 (20.6) | 302 (21.8) | ||
| 70-79 | 352 (11.3) | 306 (10.3) | 496 (10.5) | 162 (11.7) | ||
| ≥ 80 | 159 (5.1) | 137 (4.6) | 233 (4.9) | 63 (4.5) | ||
| Tumor length (cm) | 0.845 | < 0.001 | ||||
| mean ± SD | 5.3 ± 3.2 | 5.3 ± 2.9 | 5.2 ± 3.0 | 5.7 ± 3.0 | ||
| cT stage | 0.005 | < 0.001 | ||||
| 1 | 245 (7.8) | 286 (9.6) | 412 (8.7) | 119 (8.6) | ||
| 2 | 466 (14.9) | 372 (12.5) | 711 (15.1) | 127 (9.1) | ||
| 3 | 1531 (48.8) | 1463 (49.3) | 2167 (45.9) | 827 (59.5) | ||
| 4 | 710 (22.6) | 629 (21.2) | 1073 (22.8) | 266 (19.2) | ||
| Unknown | 185 (5.9) | 219 (7.4) | 354 (7.5) | 50 (3.6) | ||
| cN stage | < 0.001 | < 0.001 | ||||
| 0 | 820 (26.1) | 565 (19.0) | 1183 (25.1) | 202 (14.5) | ||
| 1/2/3 | 2210 (70.5) | 2278 (76.7) | 3340 (70.8) | 1148 (82.7) | ||
| Unknown | 107 (3.4) | 126 (4.2) | 194 (4.1) | 39 (4.1) | ||
| cM stage | 0.002 | 0.014 | ||||
| 0 | 2177 (69.4) | 2084 (70.2) | 3257 (69.1) | 1004 (72.3) | ||
| 1 | 919 (29.3) | 812 (27.4) | 1362 (28.9) | 369 (26.6) | ||
| Unknown | 41 (1.3) | 73 (2.5) | 98 (2.1) | 16 (1.2) | ||
| Tumor location | < 0.001 | < 0.001 | ||||
| Upper third | 801 (25.5) | 644 (21.7) | 1192 (25.3) | 253 (18.2) | ||
| Middle third | 1223 (39.0) | 929 (31.3) | 1785 (37.8) | 367 (26.4) | ||
| Lower third | 600 (19.1) | 534 (18.0) | 894 (19.0) | 240 (17.3) | ||
| Unknown | 513 (16.4) | 862 (29.0) | 846 (17.9) | 529 (38.1) | ||
| Tumor differentiation | < 0.001 | < 0.001 | ||||
| Well | 76 (2.4) | 74 (2.5) | 128 (2.7) | 22 (1.6) | ||
| Moderate | 1611 (51.4) | 1148 (38.7) | 2256 (47.8) | 503 (36.2) | ||
| Poorly | 677 (21.6) | 632 (21.3) | 892 (18.9) | 417 (30.0) | ||
| Unknown | 773 (24.6) | 1115 (37.6) | 1441 (30.6) | 447 (32.2) | ||
| Treatment modality | < 0.001 | < 0.001 | ||||
| Surgery with neoadjuvant chemoradiation | 381 (12.1) | 469 (15.8) | 524 (11.1) | 326 (23.5) | ||
| Surgery without neoadjuvant chemoradiation | 643 (20.4) | 658 (22.2) | 1056 (22.4) | 245 (17.6) | ||
| No surgery | 2113 (67.4) | 1842 (62.0) | 3137 (66.5) | 818 (58.9) | ||
| Hospital type | < 0.001 | < 0.001 | ||||
| Medical center | 1504 (47.9) | 2676 (90.1) | 2791 (59.2) | 1389 (100.0) | ||
| Not center | 1633 (52.1) | 293 (9.9) | 1926 (40.8) | 0 | ||
- Citation: Hsu PK, Chen HS, Wang BY, Wu SC, Liu CY, Shih CH, Liu CC. Hospital type- and volume-outcome relationships in esophageal cancer patients receiving non-surgical treatments. World J Gastroenterol 2015; 21(4): 1234-1242
- URL: https://www.wjgnet.com/1007-9327/full/v21/i4/1234.htm
- DOI: https://dx.doi.org/10.3748/wjg.v21.i4.1234