Table 1.
Characteristics of continuously enrolled Medicare Fee-for-service beneficiaries with incident lung cancer diagnosis in the United States, July-2003 through December-2006.
Source: Surveillance, Epidemiology and End Results-Medicare linked data files, 2002–2007.
| Characteristics | Proportion (%) | |
|---|---|---|
|
|
||
| Non-small cell lung cancer | Small cell lung cancer | |
| Overall, n (%) | 36,417 (86.0) | 5906 (14.0) |
| AJCC-TNM Stagea | ||
| I | 20.6 | 5.1 |
| II | 4.7 | 2.2 |
| III | 28.4 | 29.8 |
| IV | 46.2 | 62.9 |
| Age (years)a | ||
| 66–69 | 19.2 | 24 |
| 70–74 | 25.8 | 28.8 |
| 75–79 | 25.9 | 26.2 |
| ≥80 | 29.1 | 21 |
| Gendera | ||
| Male | 51.9 | 47.4 |
| Female | 48.1 | 52.6 |
| Racea | ||
| Non-white | 13.3 | 9.2 |
| White | 86.7 | 90.8 |
| Urban–rural residencea | ||
| Metro | 83.1 | 80.2 |
| Urban | 14.9 | 17.2 |
| Rural | 2 | 2.6 |
| Comorbidity, Charlson scorea | ||
| 0 | 31.7 | 29.7 |
| 1 | 28.5 | 28.8 |
| ≥2 | 39.8 | 41.5 |
AJCC = American Joint Committee on Cancer; TNM = Tumor Node Metastasis.
a
Association between characteristic and cancer type among beneficiaries; Chi-square tests (p ≤ 0.05).