Table 1.
Demographic and clinical characteristics of the study population
| N | % | |
|---|---|---|
| Total Subjects | 464 | 100 |
| Age, mean (SD) | 64.87 | 10.99 |
| Gender | ||
| Male | 368 | 79.31 |
| Female | 96 | 20.69 |
| Race | ||
| White | 432 | 93.1 |
| Hispanic | 15 | 3.23 |
| Black | 15 | 3.23 |
| Other | 2 | 0.44 |
| Smoking status* | ||
| Never | 133 | 28.66 |
| Former | 199 | 42.89 |
| Current | 132 | 28.45 |
| Pack years*, mean (SD) | 79.64 | 78.67 |
| Non-muscle invasive bladder cancer | ||
| No | 202 | 46.33 |
| Yes | 234 | 53.67 |
| Survival status | ||
| Alive | 353 | 80.05 |
| Dead | 88 | 19.95 |
| Recurrence | ||
| No | 317 | 71.88 |
| Yes | 124 | 28.12 |
| Progression | ||
| No | 366 | 83.37 |
| Yes | 73 | 16.63 |
Note: SD=Standard Deviation;
*
Never smoker=Individuals who never smoked or had smoked less than 100 cigarettes in his or her lifetime; Former smoker= Individuals who had quit smoking at least 1 year prior to diagnosis were defined as former smokers; Current smoker= Individuals who were currently smoking or who had stopped less than one year prior to diagnosis were defined as current smokers. Pack year of smoking was defined as number of cigarettes per day divided by 20 (20 cigarettes per pack) and then multiplied by years of smoking.