Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Demographic data of the patients in the control and study groups.
| Group | Total, n | Mean age ± standard deviation, years | Male/female | No. of smokers |
|---|---|---|---|---|
| Patients | 40 | 67.35±6.439 | 33/7 | 37 |
| Transitional tumor | 30 | 67.57±5.823 | ||
| Invasive tumor | 10 | 66.70±7.056 | ||
| Controls | 7 | 64.57±4.117 | 5/2 | 7 |
| Total | 47 | 66.94±5.870 | 38/9 | 40 |
