Skip to main content

Table 2 Factors associated with 90-day mortality for all patients admitted with colon cancer in 1980–2016; n = 1530

From: Octogenarian patients with colon cancer – postoperative morbidity and mortality are the major challenges

Factors Unadjusted odds ratio
(95% CI)
P value Adjusted odds ratio
(95% CI)
P value
Age (years)
  < 65 1 (reference)   1 (reference)  
  65—74 1.44 (0.84 to 2.44) 0.18 1.41 (0.74 to 2.69) 0.30
  75 – 79 1.78 (1.01 to 3.13) 0.045 1.92 (0.95 to 3.88) 0.070
  80—84 3.69 (2.20 to 6.18)  < 0.001 2.64 (1.35 to 6.16) 0.005
  85 – 89 5.20 (2.91 to 9.30)  < 0.001 2.42 (1.11 to 5.29) 0.027
  ≥ 90 11.38 (5.70 to 22.72)  < 0.001 5.85 (2.30 to 14.87)  < 0.001
Calendar year 0.97 (0.96 to 0.98)  < 0.001 0.94 (0.92 to 0.96)  < 0.001
Female sex 0.76 (0.57 to 1.03) 0.072 0.76 (0.52 to 1.13) 0.18
CCI 1.65 (1.39 to 1.95)  < 0.001 1.39 (1.10 to 1.77) 0.006
ASA score
  1–2 1 (reference)   1 (reference)  
  3 2.82 (1.98 to 4.05)  < 0.001 1.92 (1.21 to 3.06) 0.006
  4–5 21.59 (13.26 to 35.14)  < 0.001 6.94 (3.69 to 13.05)  < 0.001
Anaemiaa 1.44 (1.06 to 1.96) 0.019 1.19 (0.78 to 1.83) 0.42
Emergency surgery 3.12 (2.23 to 4.35)  < 0.001 4.90 (2.99 to 8.05)  < 0.001
Localization (left vs. right) 0.87 (0.64 to 1.17) 0.35 0.78 (0.52 to 1.18) 0.24
TNM-stage
  I 1 (reference)   1 (reference)  
  II 2.72 (1.06 to 6.99) 0.038 1.60 (0.54 to 4.74) 0.39
  III 1.17 (0.63 to 4.89) 0.29 1.30 (0.40 to 4.23) 0.67
  IV 17.61 (7.06 to 43.92)  < 0.001 5.29 (1.57 to 17.80) 0.007
  Unknown 32.71 (11.51 to 92.99)  < 0.001 1.78 (0.46 to 6.86) 0.40
Treatment intent categories
  Curative intent
    Major resection 1 (reference)   1 (reference)  
    Polypectomy 0.59 (0.08 to 4.43) 0.59 1.59 (0.18 to 13.92) 0.68
  Non-curative intent
    Major resection 5.03 (3.20 to 7.91)  < 0.001 1.28 (0.55 to 9.98) 0.56
    Bypass/stoma 28.80 (16.22 to 50.83)  < 0.001 10.23 (4.03 to 26.00)  < 0.001
  Best supportive care 19.78 (12.95 to 30.21)  < 0.001 9.56 (4.21 to 21.71)  < 0.001
  1. Results are from a logistic regression analysis, with death within 90 days as dependent variable; unadjusted: analysis performed with one covariate at a time; adjusted: analysis performed with all listed covariates included simultaneously. CCI Charlson Comorbidity Index, classified in three levels: 0, 1 and 2 + ; aAnaemia was defined as < 13 g/dL in males and < 12 g/dL in women (based on WHO recommendations)