Rodolfo Valdez

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BACKGROUND We present a potentially useful alternative approach based on support vector machine (SVM) techniques to classify persons with and without common diseases. We illustrate the method to detect persons with diabetes and pre-diabetes in a cross-sectional representative sample of the U.S. population. METHODS We used data from the 1999-2004 National(More)
  • Colin F Quinn, Karl A Wyant, Ami L Wangeline, Jeremy Shulman, Miriam L Galeas, Jose +13 others
  • 2010
Selenium (Se) hyperaccumulation, when plant species accumulate upwards of 1,000 mg Se kg −1 dry weight (DW), protects plants from a variety of herbivores and pathogens. The objective of this study was to determine the effect of plant Se concentration on the rate of litter decomposition by invertebrates and microbes in a seleniferous habitat. Decomposition,(More)
Family history is an independent risk factor for diabetes, but it is not clear how much adding family history to other known risk factors would improve detection of undiagnosed diabetes in a population. Using the National Health and Nutrition Examination Survey for 1999-2004, the authors compared logistic regression models with established risk factors(More)
A family history of diabetes is a major risk factor for the disease. As such, it is often included in a variety of tools designed to detect either people at risk of diabetes or people with undiagnosed diabetes. One of the reasons to screen for diabetes is that it has a prolonged asymptomatic phase, which includes impaired fasting glucose, impaired glucose(More)
OBJECTIVE To test the association of family history of diabetes with the adoption of diabetes risk-reducing behaviors and whether this association is strengthened by physician advice or commonly known factors associated with diabetes risk. RESEARCH DESIGN AND METHODS We used cross-sectional data from the 2005-2008 National Health and Nutrition Examination(More)
T ype 2 diabetes is a leading cause of morbidity and mortality worldwide (1). In the last 15 years, the number of people in the U.S. with diagnosed diabetes has more than doubled. Strong risk factors for type 2 diabetes include age, sex, obesity, physical inactivity, and family history (2). Several measured genetic variants have recently emerged as risk(More)
The mission of public health has been succinctly stated as " the fulfillment of society's interest in assuring conditions in which people can be healthy " (1). Public and private institutions charged with this mission monitor population health and respond when threats arise. These may be sudden health crises (eg, infectious outbreaks), persistent health(More)
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