TY - JOUR
T1 - Understanding racial disparities in renal cell carcinoma incidence
T2 - estimates of population attributable risk in two US populations
AU - Callahan, Catherine L.
AU - Schwartz, Kendra
AU - Corley, Douglas A.
AU - Ruterbusch, Julie J.
AU - Zhao, Wei K.
AU - Shuch, Brian
AU - Graubard, Barry I.
AU - Rothman, Nathaniel
AU - Chow, Wong Ho
AU - Silverman, Debra T.
AU - Purdue, Mark P.
AU - Hofmann, Jonathan N.
N1 - Publisher Copyright:
© 2019, This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply .
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Purpose: Renal cell carcinoma (RCC) incidence is higher among black than white Americans. The reasons for this disparity remain unclear. Methods: We calculated race- and sex-specific population attributable risk percentages (PAR%) and their 95% confidence intervals (CI) for hypertension and chronic kidney disease (CKD) among black and white subjects ≥ 50 years of age from the US Kidney Cancer Study (USKC; 965 cases, 953 controls), a case–control study in Chicago and Detroit, and a nested case–control study in the Kaiser Permanente Northern California health care network (KPNC; 2,162 cases, 21,484 controls). We also estimated PAR% for other modifiable RCC risk factors (cigarette smoking, obesity) in USKC. Results: In USKC, the PAR% for hypertension was 50% (95% CI 24–77%) and 44% (95% CI 25–64%) among black women and men, respectively, and 29% (95% CI 13–44%) and 27% (95% CI 14–39%) for white women and men, respectively. In KPNC, the hypertension PAR% was 40% (95% CI 18–62%) and 23% (95% CI 2–44%) among black women and men, and 27% (95% CI 20–35%) and 19% (95% CI 14–24%) among white women and men, respectively. The PAR% for CKD in both studies ranged from 7 to 10% for black women and men but was negligible (<1%) for white subjects. In USKC, the PAR% for current smoking was 20% and 8% among black and white men, respectively, and negligible and 8.6% for black and white women, respectively. The obesity PAR% ranged from 12 to 24% across all race/sex strata. Conclusions: If the associations found are causal, interventions that prevent hypertension and CKD among black Americans could potentially eliminate the racial disparity in RCC incidence (hypothetical black:white RCC incidence ratio of 0.5).
AB - Purpose: Renal cell carcinoma (RCC) incidence is higher among black than white Americans. The reasons for this disparity remain unclear. Methods: We calculated race- and sex-specific population attributable risk percentages (PAR%) and their 95% confidence intervals (CI) for hypertension and chronic kidney disease (CKD) among black and white subjects ≥ 50 years of age from the US Kidney Cancer Study (USKC; 965 cases, 953 controls), a case–control study in Chicago and Detroit, and a nested case–control study in the Kaiser Permanente Northern California health care network (KPNC; 2,162 cases, 21,484 controls). We also estimated PAR% for other modifiable RCC risk factors (cigarette smoking, obesity) in USKC. Results: In USKC, the PAR% for hypertension was 50% (95% CI 24–77%) and 44% (95% CI 25–64%) among black women and men, respectively, and 29% (95% CI 13–44%) and 27% (95% CI 14–39%) for white women and men, respectively. In KPNC, the hypertension PAR% was 40% (95% CI 18–62%) and 23% (95% CI 2–44%) among black women and men, and 27% (95% CI 20–35%) and 19% (95% CI 14–24%) among white women and men, respectively. The PAR% for CKD in both studies ranged from 7 to 10% for black women and men but was negligible (<1%) for white subjects. In USKC, the PAR% for current smoking was 20% and 8% among black and white men, respectively, and negligible and 8.6% for black and white women, respectively. The obesity PAR% ranged from 12 to 24% across all race/sex strata. Conclusions: If the associations found are causal, interventions that prevent hypertension and CKD among black Americans could potentially eliminate the racial disparity in RCC incidence (hypothetical black:white RCC incidence ratio of 0.5).
KW - African Americans
KW - Chronic kidney disease
KW - Hypertension
KW - Kidney cancer
KW - Population attributable risk
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U2 - 10.1007/s10552-019-01248-1
DO - 10.1007/s10552-019-01248-1
M3 - Article
C2 - 31782041
AN - SCOPUS:85075870239
SN - 0957-5243
VL - 31
SP - 85
EP - 93
JO - Cancer Causes and Control
JF - Cancer Causes and Control
IS - 1
ER -