Table 1.
Demographic and clinical characteristics of study subjects with metastatic breast cancer receiving chemotherapy
| Parameter | Value | |
|---|---|---|
| n = 1444 | ||
| Age (n, %) | ||
| 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, %) | ||
| Northeast | 176 | 12.2 |
| Northcentral | 399 | 27.6 |
| South | 784 | 54.3 |
| West | 85 | 5.9 |
| Payer type (n, %) | ||
| HMO | 56 | 3.9 |
| Indemnity | 524 | 36.3 |
| PPO | 459 | 31.8 |
| POS | 393 | 27.2 |
| Other | 12 | 0.8 |
| Comborbidities (n,%) | ||
| 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 |