Characteristic | No cytology available | Cytology available | ||
---|---|---|---|---|
 | N = 57 | N = 182 | ||
Age | (N) | (%) | (N) | (%) |
   Range | 18-91 |  | 20-89 |  |
   Median | 63 |  | 60 |  |
Sex | Â | Â | Â | Â |
M/F | 36/21 | 63/37 | 92/90 | 51/49* |
Race | Â | Â | Â | Â |
   Caucasian | 35 | 61 | 113 | 62 |
   African American | 16 | 29 | 59 | 32 |
   Other | 6 | 11 | 10 | 6 |
Tobacco use | 22 | 39 | 110 | 60* |