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Michael J. Symons

Researcher at University of North Carolina at Chapel Hill

Publications -  24
Citations -  1843

Michael J. Symons is an academic researcher from University of North Carolina at Chapel Hill. The author has contributed to research in topics: Population & Environmental exposure. The author has an hindex of 17, co-authored 24 publications receiving 1786 citations.

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A comparison of the logistic risk function and the proportional hazards model in prospective epidemiologic studies.

TL;DR: The conditions under which results from the two models approximate one another are described and it is shown that where the follow-up period is short and the disease is generally rare, the regression coefficients of the logistic model approximate those of the proportional hazards model with a constant underlying hazard rate.
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Contrasting Socioeconomic Profiles Related to Healthier Lifestyles in China and the United States

TL;DR: The contrasting relation between socioeconomic status and lifestyle depicts different phases of the lifestyle transition (changes in lifestyles accompanying economic development), which may in part explain why nutrition-related noncommunicable diseases are more prevalent in the developing world among people with a high socioeconomic status, whereas often the opposite is found in developed societies.
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Racial differences in mortality among Medicare recipients after treatment for localized prostate cancer.

TL;DR: Black patients' poorer overall survival from localized prostate cancer varies by initial treatment, with the survival gap being largest among patients undergoing surgery.
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Exposures and mortality among chrysotile asbestos workers. Part II: mortality.

TL;DR: Chrysotile textile workers were found to experience significantly greater lung cancer mortality at lower lifetime cumulative exposure levels than miners and millers, and factors such as differences in airborne fiber characteristics may partially account for the large differences in exposure response.