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Table 2 Multi-factorial analysis by three conceptual groups and final model

From: Survival analysis of 1148 women diagnosed with breast cancer in Southern Iran

Variables from the other three multifactorial analyses Result of final model
  Hazard ratio (95%CI) P ** Hazard ratio (95%CI) p
Family income      
   Low & poor 1 0.039 99%   
   Moderate 0.90 (0.70–1.15)     
   Good 0.46 (0.23–0.90)     
Smoking      
   Non-smoker 1 0.016 99%   
   Smoker 1.40 (1.07–1.86)     
Metastasis to bone      
   No 1 0.000 100%   
   Yes 2.25 (1.43–3.52)     
Metastasis to lung      
   No 1 0.000 100%   
   Yes 3.21 (1.70–6.05)     
Tumour size      
   ≤ 2 cm 1 0.000 88% 1 0.000
   >2 & <5 cm 1.43 (0.97–2.09)    1.43 (0.97–2.09)  
   ≥ 5 cm 2.07 (1.39–3.09)    2.07 (1.39–3.10)  
Tumour grade      
   Well-differentiated 1 0.000 88% 1 0.000
   Moderately-differentiated 1.30 (0.88–1.93)    1.30 (0.88–1.93)  
   Poorly-differentiated 2.33 (1.52–3.37)    2.33 (1.52–3.57)  
No. of involved lymph nodes      
   0 1 0.000 88% 1 0.000
   1–5 2.96 (1.78–4.94)    2.96 (1.78–4.94)  
   6–10 5.29 (3.11–9.01)    5.29 (3.11–9.01)  
   11–15 8.29 (4.98–13.80)    8.29 (4.98–13.80)  
   >15 14.96 (8.83–25.33)    14.96 (8.83–25.33)  
Lymph node ratio      
   0 1 0.000 88% 1 0.000
   > 0 &≤ .3 2.02(1.30–3.13)    2.03 (1.09–3.76)  
   > .3 &≤ .6 4.84 (2.72–8.60)    4.84 (2.72–8.60)  
   > .6 &< 1 9.30 (5.48–15.80)    9.30 (5.48–15.80)  
   1 15.31 (8.89–26.33)    15.31 (8.90–26.34)  
  1. ** Proportion of subjects in multifactorial analysis