Table 3.
Adjusteda associations of current and former smoking and demographic factors with kidney cancer histology, data only from year and registry combinations with <25% cigarette smoking data missing.
| Adjusteda prevalence ratio relative to clear cellb (95% CI; P) | |||
|---|---|---|---|
|
|
|||
| Histologyc | Current cigarette smokers | Former cigarette smokers | Never smokers |
|
| |||
| Papillary | 1.12 (1.04–1.20) [0.002] | 0.97 (0.92–1.01) [0.166] | Referent |
| Chromophobe | 0.58 (0.50–0.67) [<0.001] | 0.88 (0.81–0.95) [0.002] | Referent |
| Cyst-associated | 1.17 (0.86–1.60) [0.326] | 0.98 (0.76–1.26) [0.880] | Referent |
| Collecting duct/medullary | 1.09 (0.68–1.73) [0.723] | 1.25 (0.95–1.65) [0.107] | Referent |
| Unclassified | 1.10 (1.04–1.17) [0.001] | 0.93 (0.89–0.97) [<0.001] | Referent |
a
Adjusted for age, sex, and race/ethnicity.
b
Clear cell RCC was chosen as the referent histologic category because it is the most common.
c
This table contains results from individual models for papillary RCC, chromophobe RCC, cyst-associated RCC, collecting duct/medullary carcinoma, and unclassified RCC.