Table 1.
Characteristics of the study population (unweighted n = 2018, weighted n = 9991)
|
Total |
No transfusion |
Perioperative transfusion |
P-value1 | |
| n = 2018 | n = 1538 | n = 480 | ||
| Demographic data | ||||
| Age | ||||
| <70 yr | 1532 (76.04) | 1195 (77.88) | 337 (70.12) | 0.0004a |
| ≥70 yr | 486 (23.96) | 343 (22.12) | 143 (29.88) | |
| Sex | ||||
| Male | 1112 (55.10) | 870 (56.59) | 242 (50.32) | 0.01a |
| Female | 903 (44.90) | 665 (43.41) | 238 (49.68) | |
| Race | ||||
| White | 1251 (76.29) | 955 (76.94) | 296 (74.22) | 0.10 |
| Black | 175 (10.53) | 121 (9.63) | 54 (13.32) | |
| Hispanic | 115 (7.07) | 86 (7.04) | 29 (7.16) | |
| Asian/Pacific | 55 (3.32) | 40 (3.21) | 15 (3.62) | |
| Others | 46 (2.80) | 39 (3.16) | 7 (1.68) | |
| Household income | ||||
| Q1 | 484 (24.34) | 355 (23.59) | 129 (26.90) | 0.14 |
| Q2 | 473 (23.79) | 369 (24.34) | 104 (22.06) | |
| Q3 | 471 (23.93) | 372 (24.89) | 99 (20.87) | |
| Q4 | 541 (27.93) | 400 (27.22) | 141 (30.16) | |
| Type of admission | ||||
| Elective | 1676 (83.35) | 1311 (85.59) | 365 (76.12) | <0.0001a |
| Emergency | 338 (16.65) | 224 (14.41) | 114 (23.88) | |
| Insurance status | ||||
| Medicare/Medicaid | 877 (43.31) | 628 (40.62) | 249 (51.97) | <0.0001a |
| Private including HMO | 1027 (51.05) | 816 (53.25) | 211 (43.95) | |
| Self-pay/no charge/other | 114 (5.65) | 94 (6.13) | 20 (4.07) | |
| Clinical data | ||||
| Hepatic precondition | ||||
| No | 1967 (97.41) | 1494 (97.07) | 473 (98.52) | 0.24 |
| Steatosis/fibrosis | 44 (2.23) | 38 (2.52) | 6 (1.29) | |
| Cirrhosis | 7 (0.36) | 6 (0.41) | 1 (0.19) | |
| Primary tumor site | ||||
| Colon | 1595 (79.04) | 1194 (77.64) | 401 (83.59) | 0.003a |
| Rectum | 423 (20.95) | 344 (22.36) | 79 (16.40) | |
| Extent of liver resection | ||||
| Partial hepatectomy | 1541 (76.46) | 1204 (78.39) | 337 (70.19) | <0.0001a |
| Hepatic lobectomy | 477 (23.54) | 334 (21.60) | 143 (29.81) | |
| Laparoscopic procedure | ||||
| No | 1971 (97.64) | 1498 (9737.) | 473 (98.52) | 0.15 |
| Yes | 47 (2.36) | 40 (2.63) | 7 (1.48) | |
| Robotic-assisted | ||||
| No | 2010 (99..59) | 14532 (99.59) | 478 (99.56) | 0.91 |
| Yes | 8 (0.41) | 6 (0.40) | 2 (0.43) | |
| Comorbidity | ||||
| Chronic anemia | 422 (20.71) | 247 (15.87) | 175 (36.37) | <0.0001a |
| Congestive heart failure | 59 (2.95) | 35 (2.31) | 24 (5.02) | 0.002a |
| Chronic pulmonary disease | 188 (9.26) | 135 (8.72) | 53 (11.02) | 0.12 |
| Diabetes | 293 (14.32) | 221 (14.16) | 72 (14.84) | 0.70 |
| Hypertension | 848 (41.82) | 625 (40.43) | 223 (46.32) | 0.02a |
| Obesity | 118 (5.85) | 89 (5.80) | 29 (6.02) | 0.86 |
| Renal failure | 39 (1.89) | 30 (1.936) | 9 (1.79) | 0.86 |
| Hospital data | ||||
| Hospital bed size | ||||
| Small | 212 (10.21) | 162 (10.28) | 50 (9.97) | 0.007a |
| Medium | 327 (16.58) | 227 (15.15) | 100 (21.12) | |
| Large | 1453 (73.22) | 1125 (74.56) | 328 (68.91) | |
| Location of hospital | ||||
| Rural | 77 (3.71) | 62 (3.89) | 15 (3.14) | 0.34 |
| Urban | 1915 (96.29) | 1452 (96.10) | 463 (96.87) | |
| Teaching status of hospital | ||||
| Non-teaching | 419 (20.65) | 284 (18.46) | 135 (27.64) | <0.0001a |
| Teaching | 1573 (79.35) | 1230 (81.54) | 343 (72.36) | |
| Region of hospital | ||||
| Northeast | 437 (22.65) | 351 (23.79) | 86 (18.97) | 0.11 |
| Midwest | 480 (23.71) | 360 (23.27) | 120 (25.11) | |
| South | 737 (35.65) | 566 (35.99) | 171 (34.53) | |
| West | 364 (17.98) | 261 (16.94) | 103 (21.39) |
Data are presented as unweighted counts (weighted proportion). Percentages may not add up to 100% due to missing data. Q1: 0-25th percentile; Q2: 26th to 50th percentile; Q3: 51st to 75th percentile; Q4: 76th to 100th percentile.
1
χ2 test.
a
P < 0.05, non-transfusion group vs transfusion group.