TABLE 3.
CHARACTERISTICS OF UNRESECTED PATIENTS WITH STAGE I OR II NON–SMALL CELL LUNG CANCER ACCORDING TO THE AREA OF RESIDENCE
| Characteristic | Low RT Utilization Areas | High RT Utilization Area |
|---|---|---|
| Age, years (%) | ||
| ≤69 | 20 | 19 |
| 70–75 | 26 | 25 |
| >75 | 54 | 56 |
| Female (%) | 46 | 48 |
| Race (%) | ||
| White | 83 | 81 |
| African American | 11 | 10 |
| Hispanic | 2 | 5 |
| Other | 4 | 4 |
| Median income in ZIP code of residence (%) | ||
| Highest three quartiles | 80 | 82 |
| Lowest quartile | 20 | 18 |
| Stage | ||
| I | 92 | 93 |
| II | 8 | 7 |
| Tumor size, mm (%) | ||
| ≤20 | 20 | 19 |
| 21–30 | 26 | 28 |
| 31–50 | 35 | 34 |
| 51–70 | 13 | 13 |
| >70 | 6 | 6 |
| Histology (%) | ||
| Adenocarcinoma | 31 | 32 |
| Squamous cell carcinoma | 44 | 43 |
| Large cell carcinoma | 8 | 9 |
| Other | 17 | 16 |
| Charlson comorbidity score (%) | ||
| 0 | 34 | 35 |
| 1 | 33 | 32 |
| ≥2 | 33 | 33 |
Definition of abbreviation: RT = radiation therapy.