Table 1 Demographic and clinical characteristics of study subjects with metastatic breast cancer receiving chemotherapy
Parameter | Value | |
|---|---|---|
| Â | n = 1444 | |
Age (n, %) | Â | Â |
   18-34 | 20 | 1.4 |
   35-44 | 139 | 9.6 |
   45-54 | 358 | 24.8 |
   55-64 | 473 | 32.8 |
   ≥65 | 453 | 31.4 |
Geographic region (n, %) | Â | Â |
   Northeast | 176 | 12.2 |
   Northcentral | 399 | 27.6 |
   South | 784 | 54.3 |
   West | 85 | 5.9 |
Payer type (n, %) | Â | Â |
   HMO | 56 | 3.9 |
   Indemnity | 524 | 36.3 |
   PPO | 459 | 31.8 |
   POS | 393 | 27.2 |
   Other | 12 | 0.8 |
Comborbidities (n,%) | Â | Â |
   Cerebrovascular disease | 77 | 5.3 |
   Coronary heart disease | 152 | 10.5 |
   Heart failure | 26 | 1.8 |
   Peripheral arterial disease | 22 | 1.5 |
   Diabetes | 241 | 16.7 |
   Kidney disease | 29 | 2.0 |
   Liver disease | 100 | 6.9 |
   Respiratory disease | 547 | 37.9 |
   None of above | 634 | 43.9 |