<qa>  What is the hazard rate of breast cancer patients?Comorbidity at breast cancer diagnosis is an independent adverse prognostic factor. In Denmark, comorbidity was present in 26 of breast cancer patients diagnosed 2006-2008, and the presence of comorbidity increased the risk of dying from breast cancer as well as from other causes with adjusted hazard ratios for all-cause mortality of 1.45 and breast cancer-specific mortality 1.30. Most studies have, however, used a summary measure of comorbidity such as the Charlson Comorbidity Index Score, and only few studies have assessed the individual effects of specific comorbidities on the mortality among breast cancer patients. These few studies universally demonstrate that CVD and diabetes are associated with decreased overall survival. Thus, Patnaik et al showed that among breast cancer patients, women with the following comorbidities were more likely to die as a result of other causes: CVD 59.2, COPD 52.2, diabetes 47.8 and previous cancer 43.8 Fully adjusted relative hazards of the effects of comorbidities on breast cancer-specific mortality was 1.24 for CVD and 1.10 for diabetes, and among the total study population of breast cancer patients, CVD was the primary cause of death 15.9, followed closely by breast cancer 15.1. In a meta-analysis of studies of overall survival in breast cancer patients with preexisting diabetes, Barone et al found that preexisting diabetes was associated with an increased mortality with a hazard rate HR of 1.61; 95 CI, 1.46-1.78. 