Table 1.
Distribution of patients with NMIBC by risk status in the US National Cancer Institute’s Surveillance, Epidemiology, and End Results registries, 1988-2006 (n=29 326)
| Variables | n (%) | Risk group (%)1 |
p-value | ||
|---|---|---|---|---|---|
| Low | Intermediate | High | |||
| Sex | <0.013 | ||||
| Male | 21 740 (74.1) | 37.0 | 45.2 | 17.8 | |
| Female | 7586 (25.9) | 39.2 | 43.7 | 17.1 | |
| Race/ethnicity | <0.013 | ||||
| Non-Latino white | 25 133 (86.7) | 37.7 | 44.7 | 17.6 | |
| Non-Latino black | 1039 (3.6) | 33.5 | 46.7 | 19.8 | |
| Latino | 1456 (5.0) | 37.2 | 46.8 | 16.0 | |
| Other | 1374 (4.7) | 36.5 | 42.9 | 20.7 | |
| Marital status | <0.0013 | ||||
| Married | 19 219 (67.8) | 38.5 | 44.3 | 17.2 | |
| Unmarried2 | 9140 (32.2) | 35.4 | 45.9 | 18.7 | |
| Age (mean±SD) | 67.74±13.14 | 66.19±13.32 | 67.85±13.06 | 70.78±12.41 | <0.0014 |
NMIBC, non–muscle-invasive bladder cancer; SD, standard deviation.
1
Low risk: stage Ta (grade I or II) and tumor size <3 cm; Intermediate risk: stage Ta, T1 (grade III/IV) and tumor size <3 cm; and High risk: carcinoma in situ (grade III or IV) and tumor size ≥3 cm.
2
The category of unmarried included single, separated, divorced, and widowed participants.
3
Chi-square test.
4
Student t-test.