Chris Hyson

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BACKGROUND Financial incentive designs to increase physical activity have not been well-examined. OBJECTIVE To test the effectiveness of 3 methods to frame financial incentives to increase physical activity among overweight and obese adults. DESIGN Randomized, controlled trial. ( NCT 02030119). SETTING University of Pennsylvania. (More)
OBJECTIVE To compare the clinical and imaging characteristics of those PRECEPT (Parkinson Research Examination of CEP-1347 Trial) subjects with a scan without evidence of dopaminergic deficit (SWEDD) to those with dopamine transporter (DAT) deficit scans at study baseline and during a 22-month follow-up. METHODS Baseline (n = 799) and 22-month follow-up(More)
Transfusion of a bacterially contaminated blood product can have serious consequences. We undertook an electronic survey of representative Canadian hospitals to determine current clinical and laboratory practices for investigating such reactions, prior to the development of national guidelines. There was considerable variability in symptoms and signs that(More)
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