caa a22 4500 477129293 CHVBK 20180405111700.0 cr unu---uuuuu 170330e19970901xx s 000 0 eng 10.1023/A:1018427320658 doi (NATIONALLICENCE)springer-10.1023/A:1018427320658 Marijuana use and cancer incidence (California, United States) [Elektronische Daten] [S. Sidney, C. Quesenberry Jr., G. Friedman, I. Tekawa] The purpose of this retrospective cohort study was to examine therelationship of marijuana use to cancer incidence. The study populationconsisted of 64,855 examinees in the Kaiser Permanente multiphasic healthcheckup in San Francisco and Oakland (California, United States), between1979-85, aged 15 to 49 years, who completed self-ad-ministered questionnairesabout smoking habits, including marijuana use. Follow-up for cancer incidencewas conducted through 1993 (mean length 8.6 years). Compared withnonusers/experimenters (lifetime use of less than seven times), ever- andcurrent use of marijuana were not associated with increased risk of cancer ofall sites (relative risk [RR] = 0.9, 95 percent confidence interval [CI] =0.7-1.2 for ever-use in men; RR = 1.0, CI = 0.8-1.1 in women) in analysesadjusted for sociodemographic factors, cigarette smoking, and alcohol use.Marijuana use also was not associated with tobacco-related cancers or withcancer of the following sites: co lorectal, lung, melanoma, prostate, breast,cervix. Among nonsmokers of tobacco cigarettes, ever having used marijuanawas associated with increased risk of prostate cancer (RR = 3.1, CI =1.0-9.5) and nearly significantly increased risk of cervical cancer (RR =1.4, CI = 1.0-2.1). We conclude that, in this relatively young study cohort,marijuana use and cancer were not associated in overall analyses, but thatassociations in nonsmokers of tobacco cigarettes suggested that marijuana usemight affect certain site-specific cancer risks. Chapman and Hall, 1997 Cancer incidence nationallicence marijuana nationallicence retrospective cohort study nationallicence United States nationallicence Sidney S. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut Quesenberry Jr. C. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut Friedman G. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut Tekawa I. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut Cancer Causes & Control Kluwer Academic Publishers 8/5(1997-09-01), 722-728 0957-5243 8:5<722 1997 8 10552 https://doi.org/10.1023/A:1018427320658 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1018427320658 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sidney S. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut NATIONALLICENCE 700 1- Quesenberry Jr C. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut NATIONALLICENCE 700 1- Friedman G. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut NATIONALLICENCE 700 1- Tekawa I. Division of Research, Kaiser Permanente Medical Care Program, Oakland, USA aut NATIONALLICENCE 773 0- Cancer Causes & Control Kluwer Academic Publishers 8/5(1997-09-01), 722-728 0957-5243 8:5<722 1997 8 10552 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer