Leon F. Burmeister

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Data from an in-person interview study of 622 white men with newly diagnosed non-Hodgkin's lymphoma and 1245 population-based controls in Iowa and Minnesota were used to measure the risk associated with farming occupation and specific agricultural exposures. Men who ever farmed were at slightly elevated risk of non-Hodgkin's lymphoma (odds ratio = 1.2, 95%(More)
Mortality surveys and death certificate studies have suggested an association between leukemia and farming. To investigate whether exposure to carcinogens in an agricultural setting is related to risk of leukemia, the authors conducted a population-based case-control interview study of 578 white men with leukemia and 1245 controls living in Iowa and(More)
BACKGROUND An increased rate of non-Hodgkin's lymphoma (NHL) has been repeatedly observed among farmers, but identification of specific exposures that explain this observation has proven difficult. METHODS During the 1980s, the National Cancer Institute conducted three case-control studies of NHL in the midwestern United States. These pooled data were(More)
The etiology of non-Hodgkin's lymphoma (NHL) is not well understood. To develop hypotheses on causes of this tumor, data from a population-based case-control interview study of 1,867 white men (622 cases and 1,245 controls) in Iowa and Minnesota conducted during 1980-1983 were examined. Subjects, or their next of kin, were interviewed to obtain information(More)
A population-based case-control study of 173 White men with multiple myeloma (MM) and 650 controls was conducted in Iowa (United States), an area with a large farming population, to evaluate the association between MM, agricultural risk factors, and exposure to individual pesticides. A slight nonsignificantly elevated risk for MM was seen among farmers(More)
Objective: Data from three population-based case–control studies conducted in Kansas, Nebraska, Iowa, and Minnesota were pooled to evaluate the relationship between the use of organophosphate pesticides and non-Hodgkin's lymphoma (NHL) among white male farmers. Methods: The data set included 748 cases of non-Hodgkin's lymphoma and 2236 population-based(More)
The Keokuk County Rural Health Study (KCRHS) was designed as a 20-year, prospective cohort study focusing on chronic disease and injury in an agricultural southeastern Iowa county. The goals of the KCRHS are to prospectively describe, measure, and analyze prevalent rural and agriculturally related adverse health outcomes and their respective risk factors(More)
PURPOSE The purpose of this study was to better define the toxicity of low dose (less than or equal to 15 mg/d prednisone or equivalent) long-term (greater than 1 year) corticosteroids in the treatment of rheumatoid arthritis (RA). PATIENTS AND METHODS We examined an historical cohort of 112 RA patients on low dose (6.1 +/- 3.1 mg/d, mean +/- SD)(More)
Population-based case-control interview studies of 622 White men with non-Hodgkin's lymphoma and 820 controls from Iowa and Minnesota (United States) and 173 White men with multiple myeloma and 452 controls from Iowa offered the opportunity to investigate the relationship of these cancers with smoking. Risks were significantly elevated for all lymphoma(More)
Studies describing respiratory health hazards for workers in swine production facilities have been published in the United States, Sweden, Canada, the Netherlands, and Denmark. Up to 50% of these workers experience bronchitis, organic dust toxic syndrome, hyper-reactive airways disease, chronic mucous membrane irritation, and other respiratory effects.(More)