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["Table 3  Multivariate Analysis of Prognostic Factors"]
["Characteristics","P value","HR","95%CI for HR"]
["Age at diagnosis"]
["40-44 years",null,"Reference"]
["45-49 years",0.542,0.932,"0.741-1.170"]
["50-54 years",0.878,1.017,"0.821-1.260"]
["55-59 years",0.024,{"v":1.27,"d":"1.270"},"1.032-1.562"]
["Race"]
["White",null,"Reference"]
["Black",0.001,1.317,"1.127-1.540"]
["Other a",0.128,1.192,"0.951-1.495"]
["Marital status"]
["Single",null,"Reference"]
["Married",0.008,0.819,"0.707-0.949"]
["Other b",{"v":0.13,"d":"0.130"},0.871,"0.728-1.042"]
["Insurance(yes vs no)","<0.001",0.587,"0.459-0.751"]
["Histology"]
["Ductal",null,"Reference"]
["Lobular",0.744,1.041,"0.820-1.321"]
["Others",0.356,1.105,"0.894-1.365"]
["Laterality"]
["Right",null,"Reference"]
["Left",0.506,1.043,"0.921-1.182"]
["Bilateral, single primary",0.177,{"v":2.21,"d":"2.210"},"0.894-1.365"]
["Grade"]
["I",null,"Reference"]
["II",0.309,1.147,"0.881-1.492"]
["III or IV","<0.001",{"v":1.96,"d":"1.960"},"1.491-2.577"]
["Tumour subtype"]
["HR+/HER2-",null,"Reference"]
["HR+/HER2+",0.002,0.631,"0.474-0.839"]
["HR-/HER2-","<0.001",2.808,"2.169-3.634"]
["HR-/HER2+",0.258,0.716,"0.401-1.277"]
["Site of metastases"]
["Lung(yes vs no)",{"v":0.02,"d":"0.020"},1.378,"1.188-1.598"]
["Live(yes vs no)","<0.001",2.085,"1.795-2.422"]
["Brain(yes vs no)","<0.001",1.903,"1.542-2.248"]
["Surgery(yes vs no)","<0.001",0.504,"0.431-0.590"]
["HR+/HER2- * multi-metastases",null,"Reference"]
["HR+/HER2+ * multi-metastases",0.045,0.694,"0.485-0.992"]
["HR-/HER2- * multi-metastases",0.717,0.941,"0.675-1.310"]
["HR-/HER2+ * multi-metastases",0.564,0.828,"0.437-1.572"]
["Next step"]
["White*HR+/HER2-",null,"Reference"]
["Black*HR+/HER2+",0.366,0.821,"0.536-1.258"]
["Other a*HR+/HER2+",0.652,0.862,"0.453-1.641"]
["Black*HR-/HER2-",0.323,0.817,"0.546-1.220"]
["Other a*HR-/HER2-",0.299,1.508,"0.695-3.271"]
["Black*HR-/HER2+",0.696,0.881,"0.466-1.664"]
["Other a*HR-/HER2+",0.368,0.701,"0.323-1.521"]
["Other a (American Indian/AK Native, Asian/Pacific Islander)"]
["Other b (Divorced/Widowed/Separated)"]

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