Factors | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
P-values | HR (95%CI) | P-values | HR (95%CI) | |
Age | 0.185 | 1.02 (0.99—1.04) | ||
BMI | 0.605 | 0.98 (0.91—1.06) | ||
Surgical duration | 0.346 | 1.00 (1.00—1.01) | ||
Length of postoperative hospital stay | 0.101 | 1.01 (1.00—1.03) | ||
Tumor size | ||||
 <4 | Ref | |||
 ≧4 | 0.641 | 1.14 (0.67—1.94) | ||
Gender | ||||
 Male | Ref | |||
 Female | 0.520 | 0.84 (0.49—1.44) | ||
Tumor location | ||||
 Rectum | Ref | |||
 Colon | 0.611 | 0.88 (0.53—1.45) | ||
TNM | ||||
 I | Ref | Ref | ||
 II | 0.291 | 1.78 (0.61—5.18) | 0.678 | 1.26 (0.42—3.75) |
 III | 0.009** | 4.02 (1.41—11.44) | 0.027* | 3.39 (1.15—10.00) |
 IV | 0.001** | 7.57 (2.21—25.89) | 0.046* | 4.20 (1.03—17.16) |
Histologic type | ||||
 Differentiateda | Ref | |||
 Undifferentiatedb | 0.859 | 0.84 (0.12—6.03) | ||
Anemia | ||||
 No | Ref | |||
 Yes | 0.561 | 1.16 (0.70—1.92) | ||
Radiotherapy and chemotherapy | ||||
 No | Ref | |||
 Yes | 0.945 | 0.98 (0.55—1.73) | ||
Previous abdominal surgery | ||||
 No | Ref | |||
 Yes | 0.066 | 1.75 (0.96—3.18) | ||
Epidural anesthesia | ||||
 No | Ref | |||
 Yes | 0.171 | 0.49 (0.18—1.36) | ||
Laparoscopy-assisted operation | ||||
 No | Ref | Ref | ||
 Yes | 0.006** | 0.46 (0.27—0.81) | 0.037* | 0.53 (0.29—0.96) |
Enterostomy | ||||
 No | Ref | |||
 Yes | 0.430 | 1.30 (0.68—2.50) | ||
Combined resection | ||||
 No | Ref | |||
 Yes | 0.529 | 1.29 (0.59—2.83) | ||
WBC > 10 G/L | ||||
 No | Ref | |||
 Yes | 0.052 | 1.96 (0.99—3.86) | ||
Hypoalbuminemia | ||||
 No | Ref | Ref | ||
 Yes | 0.068 | 1.70 (0.96—3.01) | 0.121 | 1.62 (0.88—2.97) |
CEA > 9.7 ng/mL | ||||
 No | Ref | Ref | ||
 Yes | 0.004** | 2.15 (1.27—3.65) | 0.103 | 1.66 (0.90—3.05) |
CA199 > 37 U/mL | ||||
 No | Ref | Ref | ||
 Yes |  < 0.001** | 2.88 (1.66—5.01) | 0.010* | 2.17 (1.20—3.94) |
ASA score | ||||
 ≦2 | Ref | Ref | ||
 >2 | 0.002** | 2.29 (1.36—3.85) | 0.010* | 2.02 (1.19—3.45) |
NSR2002 score | ||||
 <3 | Ref | |||
 ≧3 | 0.134 | 1.77 (0.84—3.72) | ||
CCI score | ||||
 0 | Ref | |||
 ≧1 | 0.009** | 1.97 (1.18—3.28) | ||
Estimated blood loss > 300 ml | ||||
 No | Ref | |||
 Yes | 0.972 | 1.02 (0.41—2.54) | ||
Clavien-Dindo classification | ||||
 0-II | Ref | |||
 III-V | 0.001** | 2.29 (1.38—3.79) | ||
Spleen density | ||||
 non-DROSD | Ref | Ref | ||
 DROSD |  < 0.001** | 3.51 (1.96—6.31) | 0.003** | 2.58 (1.39—4.79) |