Table 1.
Patient population demographics and clinical characteristics.
| Clinical characteristic | Patient n and percentage (total n = 126) |
|---|---|
| Male | 61 (48.4) |
| Female | 65 (51.6) |
| Caucasian | 80 (63.5) |
| African-American | 43 (34.1) |
| Other | 3 (2.4) |
| Medicare | 64 (50.8) |
| Commercial insurance | 41 (32.5) |
| Medicaid | 19 (15.1) |
| Uninsured | 2 (1.6) |
| Single metastasis | 48 (38.1) |
| Multiple metastases | 78 (61.9) |
| Controlled extracranial disease | 68 (54.0) |
| Uncontrolled extracranial disease | 58 (46.0) |
| NSCLC | 63 (50.0) |
| Breast | 16 (12.7) |
| Melanoma | 15 (11.9) |
| Other | 32 (24.4) |
| ECOG 0 | 36 (28.6) |
| ECOG 1 | 53 (42.1) |
| ECOG 2 | 37 (29.3) |
| RPA Stage I | 40 (31.7) |
| RPA Stage II | 53 (42.1) |
| RPA Stage III | 33 (26.2) |
| GPA Score 0.0–1.0 | 13 (10.3) |
| GPA Score 1.5–2.0 | 50 (39.7) |
| GPA Score 2.5–3.0 | 47 (37.3) |
| GPA Score 3.5–4.0 | 16 (12.7) |
| 1 brain lesion | 45 (35.7) |
| 2 or 3 lesions | 56 (44.4) |
| 4 or more lesions | 25 (19.9) |
| Multiple GKRS sessions | 13 (10.3) |
| One GKRS session | 113 (89.7) |
| Prior brain surgery | 18 (14.3) |
| No prior brain surgery | 108 (85.7) |
| Median age (range) | 62 years (range 28–86) |
| Median survival (range) | 5.8 months (range 0.1–64.1) |
Data are frequency (%) unless otherwise stated.
NSCLC, non-small cell lung carcinoma; RPA, recursive partitioning analysis; GKRS, Gamma Knife® Radiosurgery.