Relations between previous lactation experience and risks of cancer of the breast and other sites were investigated after follow-up of 50,274 parous women from 1961 through 1980. Among women with complete information on lactation, 5102 developed cancer and, of these, 1136 were diagnosed with breast cancer. Analyses of associations with mean duration of lactation per birth and duration for each ...

BACKGROUND Data on cancer mortality in North African migrants to France (the largest foreign-born community in the country) are presented, providing useful insights both into cancer patterns in North Africa and their changes following migration. METHODS The cancer mortality in migrants from North Africa (Algeria, Morocco, Tunisia and Egypt) resident in France relative to that of the local-bor...

INTRODUCTION We sought to evaluate the effects of diabetes disease management through a diabetes pay-for-performance (P4P) program in Taiwan on risks of incident cancer and mortality among patients with type 2 diabetes. METHODS We conducted a longitudinal observational cohort study using 3 population-based databases in Taiwan. Using propensity score matching, we compared patients with type 2 ...

BACKGROUND First-degree relatives of patients with breast or ovarian cancer have increased risks for these cancers. Little is known about how their risks vary with the patient's cancer site, carrier status for predisposing genetic mutations, or age at cancer diagnosis. METHODS We evaluated breast and ovarian cancer incidence in 2,935 female first-degree relatives of non-Hispanic White female ...

There is increasing concern regarding radiation-related second-cancer risks in long-term radiotherapy survivors and a corresponding need to be able to predict cancer risks at high radiation doses. Although cancer risks at moderately low radiation doses are reasonably understood from atomic bomb survivor studies, there is much more uncertainty at the high doses used in radiotherapy. It has gener...

BACKGROUND Some epidemiologic and laboratory studies have suggested that total joint arthroplasty could increase the risk of cancer. In this meta-analysis, we attempt to clarify the association of joint arthroplasty with subsequent cancer incidence. METHODS We identified population-based studies reporting standardized incidence ratios (SIR) for cancer following large joint arthroplasty. After...