Table 1.

Demographics of study subjects

GroupSample sizeMales, n (%)Median age (y)Median age (y)Range age (y)
Healthy smokers11779 (67.5)60.058.537-86
Active SCCHN11679 (68.1)59.958.537-86
NED >3 y10379 (76.7)62.66439-82