Factors | Univariate analysis | Multivariate analysis | ||
---|---|---|---|---|
P-values | HR (95%CI) | P-values | HR (95%CI) | |
Age | 0.155 | 1.02 (0.99—1.05) | ||
BMI | 0.304 | 0.95 (0.87—1.04) | ||
Surgical duration | 0.367 | 1.00 (1.00—1.01) | ||
Length of postoperative hospital stay | 0.143 | 1.01 (1.00—1.03) | ||
Tumor size | ||||
 <4 | Ref | |||
 ≧4 | 0.159 | 1.58 (0.84—2.98) | ||
Gender | ||||
 Male | Ref | |||
 Female | 0.691 | 0.89 (0.49—1.61) | ||
Tumor location | ||||
 Rectum | Ref | |||
 Colon | 0.743 | 1.10 (0.63—1.93) | ||
TNM | ||||
 I | Ref | Ref | ||
 II | 0.104 | 5.35 (0.71—40.39) | 0.156 | 4.33 (0.57—32.79) |
 III | 0.010* | 13.81 (1.87—101.79) | 0.012* | 13.16 (1.75—98.99) |
 IV | 0.002** | 26.80 (3.21—223.45) | 0.004** | 23.69 (2.71—206.94) |
Histologic type | ||||
 Differentiateda | Ref | |||
 Undifferentiatedb | 0.894 | 0.87 (0.12—6.34) | ||
Anemia | ||||
 No | Ref | |||
 Yes | 0.262 | 1.38 (0.79—2.42) | ||
Radiotherapy and chemotherapy | ||||
 No | Ref | |||
 Yes | 0.980 | 1.01 (0.53—1.90) | ||
Previous abdominal surgery | ||||
 No | Ref | |||
 Yes | 0.327 | 1.42 (0.71—2.84) | ||
Epidural anesthesia | ||||
 No | Ref | |||
 Yes | 0.125 | 0.33 (0.08—1.36) | ||
Laparoscopy-assisted operation | ||||
 No | Ref | Ref | ||
 Yes | 0.006** | 0.40 (0.21—0.76) | 0.040* | 0.47 (0.23—0.97) |
Enterostomy | ||||
 No | Ref | |||
 Yes | 0.518 | 1.27 (0.62—2.62) | ||
Combined resection | ||||
 No | Ref | |||
 Yes | 0.804 | 1.12 (0.45—2.84) | ||
WBC > 10 G/L | ||||
 No | Ref | |||
 Yes | 0.118 | 1.83 (0.86—3.91) | ||
Hypoalbuminemia | ||||
 No | Ref | Ref | ||
 Yes | 0.034* | 1.96 (1.05—3.64) | 0.036* | 2.05 (1.05—4.00) |
CEA > 9.7 ng/mL | ||||
 No | Ref | |||
 Yes | 0.012* | 2.13 (1.18—3.84) | ||
CA199 > 37 U/mL | ||||
 No | Ref | Ref | ||
 Yes |  < 0.001** | 3.25 (1.78—5.91) | 0.008** | 2.36 (1.25—4.46) |
ASA score | ||||
 ≦2 | Ref | Ref | ||
 >2 | 0.002** | 2.48 (1.39—4.41) | 0.025* | 1.95 (1.09—3.50) |
NSR2002 score | ||||
 <3 | Ref | |||
 ≧3 | 0.078 | 2.06 (0.92—4.59) | ||
CCI score | ||||
 0 | Ref | |||
 ≧1 | 0.013* | 2.07 (1.16—3.66) | ||
Estimated blood loss > 300 ml | ||||
 No | Ref | |||
 Yes | 0.598 | 0.73 (0.23—2.35) | ||
Clavien-Dindo classification | ||||
 0-II | Ref | |||
 III-V | 0.001** | 2.56 (1.46—4.49) | ||
Spleen density | ||||
 non-DROSD | Ref | Ref | ||
 DROSD |  < 0.001** | 3.70 (1.96—6.98) | 0.012* | 2.36 (1.21—4.63) |