Table 2.
Demographic and Disease Variables of Total Sample (N = 1149)
| Variable | Value |
|---|---|
| Age at diagnosis, y | |
| Mean (SD) | 65.2 (9.47) |
| Median | 66.0 |
| Range | 35.0–89.0 |
| Sex | |
| Women | 540 (47%) |
| Men | 609 (53%) |
| Pathologic cell type | |
| Adenocarcinoma | 525 (45.7%) |
| Squamous | 260 (22.6%) |
| Small cell | 146 (12.7%) |
| Nonsmall cell | 60 (5.2%) |
| Other | 157 (13.7%) |
| Missing | 1 (0.01%) |
| Stage | |
| Unknown | 8 (0.01%) |
| Limited | 91 (8%) |
| Extensive | 53 (4.6%) |
| IA | 285 (25%) |
| IB | 208 (18.2%) |
| IIA | 30 (2.6%) |
| IIB | 80 (7%) |
| IIIA | 129 (11.3%) |
| IIIB | 95 (8.3%) |
| IV | 170 (14.9%) |
| Treatment modality | |
| Only surgery | 526 (45.77%) |
| Both surgery and chemotherapy | 117 (10.18%) |
| Both surgery and radiotherapy | 40 (3.48%) |
| Surgery, chemotherapy, and radiotherapy | 126 (10.96%) |
| Only chemotherapy | 105 (9.13%) |
| Both chemotherapy and radiotherapy | 204 (17.75%) |
| Only radiotherapy | 10 (0.87%) |
| No chemotherapy, surgery, or radiotherapy | 19 (1.65%) |
| Cigarette smoking status | |
| Never | 194 (16.9%) |
| Former | 580 (50.5%) |
| Current | 369 (32.1%) |
| Missing | 6 (0.5%) |
SD indicates standard deviation.