Table 1.
Univariate descriptive statistics of The Cancer Genome Atlas lung adenocarcinoma tissue study sample.
| Covariate | Analytic sample (n = 390) |
|---|---|
| Smoking status N(%) | |
| Never | 61 (15.6) |
| Current | 91 (23.3) |
| Former (≤15 years) | 135 (34.6) |
| Former (>15 years) | 103 (26.4) |
| Sex N(%) | |
| Male | 176 (45.1) |
| Female | 214 (54.9) |
| Age Mean(IQR) | 65.3 (14) |
| Smoking pack years Mean(IQR) | 42.2 (27.5) |
| Missing N(%) | 113 (29.0) |
| Race N(%) | |
| White | 321 (82.3) |
| Black | 35 (9.0) |
| Asian | 6 (1.5) |
| Unknown | 28 (7.2) |
| Cancer stage N(%) | |
| I | 216 (55.4) |
| II | 93 (23.8) |
| III | 62 (15.9) |
| IV | 19 (4.9) |
We report mean(IQR) for continuous covariates and frequency (percent) for categorical covariates.