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Table 5 Association of IR findings with mortality in patients with clinical stage I and II tumors

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

Variable   Overall mortality Disease-specific mortality
n HR 95 % CI p HR 95 % CI p
IR signsa
 IR1     0.03    0.03
  IR1 = 0 81 1   1  
  IR1 = 1 20 3.76 1.15–12.31 4.59 1.15–18.37
 IR2     0.93    0.62
  IR2 = 0 46 1   1  
  IR2 = 1 55 1.06 0.32–3.46 1.43 0.34–6.00
 IR3     0.45    0.93
  IR3 = 0 10 1   1  
  IR3 = 1 91 0.68 0.45–1.68 0.92 0.11–7.45
 IR4     0.94    0.22
  IR4 = 0 83 1   1  
  IR4 = 1 18 0.95 0.20–4.39 2.45 0.58–10.25
 IR5     0.72    0.53
  IR5 = 0 19 1   1  
  IR5 = 1 82 0.91 0.55–1.51 1.96 0.24–15.95
  1. Total number of patients with clinical stage I and II tumors = 101
  2. Estimated by Cox proportional hazards model
  3. HR hazard ratio, 95 % CI 95 % confidence interval
  4. aIR imaging signs are defined in Table 1; 0 = negative, 1 = positive