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Table 4 Association of IR signs and overall mortality and disease-specific mortality after controlling for clinicopathological variables

From: The association of infrared imaging findings of the breast with prognosis in breast cancer patients: an observational cohort study

   Overall mortality Disease-specific mortality
Variable n HR 95 % CI p HR 95 % CI p
IR parametera
 IR1     0.01    0.02
  IR1 = 0 109 1   1  
  IR1 = 1 34 3.85 1.37–10.81 3.91 1.22–12.59
 IR2     0.65    0.30
  IR2 = 0 61 1   1  
  IR2 = 1 82 0.80 0.30–2.15 0.56 0.18–1.68
 IR3     0.88    0.93
  IR3 = 0 12 1   1  
  IR3 = 1 131 0.85 0.10–6.96 1.11 0.13–9.44
 IR4     0.98    0.16
  IR4 = 0 114 1   1  
  IR4 = 1 29 1.01 0.33–3.10 2.26 0.74–6.93
 IR5     0.85    0.60
  IR5 = 0 26 1   1  
  IR5 = 1 117 1.14 0.31–4.17 0.69 0.18–2.66
  1. Estimated by multivariate Cox proportional hazards model
  2. Clinicopathological variables: age, clinical tumor staging, pathological tumor grade, molecular subtypes
  3. HR hazard ratio, 95 % CI 95 % confidence interval
  4. aIR imaging signs are defined in Table 1; 0 = negative, 1 = positive