Table 1

Patient characteristics

CharacteristicOverallVolatileTotal intravenousCombinedP value
N=1184N=386 (33%)N=349 (29%)N=449 (38%)
Age0.055
 Mean (SD)57.03 (12.92)58.28 (12.91)56.60 (12.40)56.29 (13.26)
 Median (min, max)58.0 (18.0, 87.0)60.0 (20.0, 86.0)58.0 (18.0, 80.0)58.0 (18.0, 87.0)
BMI (kg/m2)0.214
 Mean (SD)29.58 (7.68)29.79 (7.78)28.90 (7.20)29.93 (7.92)
 Median (min, max)28.0 (14.8, 66.1)28.5 (16.1, 63.5)27.4 (14.8, 62.7)28.3 (15.8, 66.1)
ASA score0.872
 I/II110 (9.5%)38 (9.9%)30 (8.8%)42 (9.5%)
 III/IV1,054 (90.5%)345 (90.1%)311 (91.2%)398 (90.5%)
Charlson Comorbidity Index0.202
 0120 (10.1%)36 (9.3%)33 (9.5%)51 (11.4%)
 1–2451 (38.1%)132 (34.2%)143 (41.0%)176 (39.2%)
 3+613 (51.8%)218 (56.5%)173 (49.6%)222 (49.4%)
Ethnicity0.081
 Hispanic or Latino190 (16.0%)67 (17.4%)53 (15.2%)70 (15.6%)
 Not Hispanic or Latino948 (80.1%)308 (79.8%)274 (78.5%)366 (81.5%)
 Unknown46 (3.9%)11 (2.8%)22 (6.3%)13 (2.9%)
Race0.096
 White or Caucasian809 (68.4%)264 (68.4%)253 (72.7%)292 (65.2%)
 Black or African American138 (11.7%)43 (11.1%)34 (9.8%)61 (13.6%)
 Asian64 (5.4%)18 (4.7%)12 (3.4%)34 (7.6%)
 Native Hawaiian/Other Pacific Islander2 (0.2%)1 (0.3%)1 (0.3%)0 (0%)
 American Indian/Alaskan Native4 (0.3%)2 (0.5%)1 (0.3%)1 (0.2%)
 Other132 (11.2%)52 (13.5%)35 (10.1%)45 (10.0%)
 Unknown33 (2.8%)6 (1.6%)12 (3.4%)15 (3.3%)
Any previous abdominal surgery (yes)874 (73.8%)284 (73.6%)257 (73.6%)333 (74.2%)0.978
Prior chemotherapy (yes)456 (38.5%)143 (37.0%)147 (42.1%)166 (37.0%)0.258
Prior radiotherapy (yes)33 (2.8%)13 (3.4%)7 (2.0%)13 (2.9%)0.527
Tumor type0.249
 Malignant primary735 (62.1%)234 (60.6%)226 (64.8%)275 (61.2%)
 Malignant recurrent146 (12.3%)38 (9.8%)48 (13.8%)60 (13.4%)
 Neoplasm primary61 (5.2%)19 (4.9%)19 (5.4%)23 (5.1%)
 Neoplasm recurrent1 (0.1%)0 (0%)0 (0%)1 (0.2%)
 Benign220 (18.6%)85 (22.0%)52 (14.9%)83 (18.5%)
 None21 (1.8%)10 (2.6%)4 (1.1%)7 (1.6%)
Estimated blood loss (mL)0.248
 Mean (SD)427.09 (550.22)437.73 (525.85)383.12 (462.73)452.23 (627.16)
 Median (min, max)250 (5, 5550)250 (5, 3000)250.0 (10, 3500)250 (10, 5550)
OR time (minutes)0.005
 Mean (SD)242.03 (106.16)229.27 (92.06)234.79 (96.45)258.62 (121.62)
 Median (min, max)218.5 (33.0, 885.0)212 (72, 619)216 (33, 722)230 (55, 885)
Surgical complexity0.011
 Low415 (68.7%)133 (76.4%)121 (61.4%)161 (69.1%)
 Intermediate174 (28.8%)37 (21.3%)73 (37.1%)64 (27.5%)
 High15 (2.5%)4 (2.3%)3 (1.5%)8 (3.4%)
  • ASA, American Society of Anesthesiologists ; BMI, body mass index; OR, operating room.