TY  - JOUR
T1  - PRospective evaluation of analgesic use and risk of renal cell cancer
AU  - Cho E, Curhan G, Hankinson SE, et al
Y1  - 2011/09/12
N1  - 10.1001/archinternmed.2011.356
JO  - Archives of Internal Medicine
SP  - 1487
EP  - 1493
VL  - 171
IS  - 16
N2  - Background 
                  Epidemiologic data suggest that analgesic use increases the risk of renal cell cancer (RCC), but few prospective studies have been published. We investigated the association between analgesic use and RCC in 2 large prospective studies.Methods 
                  We examined the relationship between analgesic use and RCC risk in the Nurses' Health Study and the Health Professionals Follow-up Study. Use of aspirin, other nonsteroidal anti-inflammatory drugs (NSAIDs), and acetaminophen was ascertained in 1990 in the Nurses' Health Study and in 1986 in the Health Professionals Follow-up Study, and every 2 years thereafter. We evaluated baseline and duration of use of analgesics.Results 
                  During follow-up of 16 years among 77 525 women and 20 years among 49 403 men, we documented 333 RCC cases. Aspirin and acetaminophen use were not associated with RCC risk. However, regular use of nonaspirin NSAIDs was associated with an increased RCC risk; the pooled multivariate relative risk was 1.51 (95% confidence interval, 1.12-2.04) at baseline. The absolute risk differences for users vs nonusers of nonaspirin NSAIDs were 9.15 per 100 000 person-years in women and 10.92 per 100 000 person-years in men. There was a dose-response relationship between duration of nonaspirin NSAID use and RCC risk; compared with nonregular use, the pooled multivariate relative risks were 0.81 (95% confidence interval, 0.59-1.11) for use less than 4 years, 1.36 (0.98-1.89) for 4 to less than 10 years, and 2.92 (1.71-5.01) for use for 10 or more years (P < .001 for trend).Conclusion 
                  Our prospective data suggest that longer duration of use of nonaspirin NSAIDs may increase the risk of RCC.
SN  - 0003-9926
M3  - doi: 10.1001/archinternmed.2011.356
UR  - http://dx.doi.org/10.1001/archinternmed.2011.356
ER  -