Jorge Villegas

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BACKGROUND Tobacco cessation among Latinos is a public health priority in the United States, particularly given the relatively high growth of this population segment. Although a substantial percentage of American Latinos use the Internet, they have not engaged in Web-based cessation programs as readily as other racial/ethnic subgroups. A lack of culturally(More)
This article summarizes research published over the past decade and identifies areas where future research is needed to increase our knowledge of the media's role in fostering or reducing mental illness stigma. The following questions are addressed: (1) How is mental illness portrayed by the media? (2) How do media images of mental illness impact(More)
INTRODUCTION The objective is to identify whether epidemiologic differences in burns in the elderly lead to worse outcomes. METHODS Case control study. Patients admitted between October 2006 and September 2009, comparing over 65 years old (n=66) with under 65 (n=235). Studied variables: agent, inhalation injury, total burn surface area (%TBSA), deep TBSA,(More)
Anti-smoking Public Service Announcements (PSAs) typically emphasize the negative consequences of failing to quit smoking (negative frame), as opposed to emphasizing the benefits of quitting (positive frame). However, stressing the benefits of quitting sometimes produces better communication outcomes. Previous research on message framing has tried to(More)
OBJECTIVE We compared the effects of an arginine-supplemented diet with those of an isocaloric isonitrogenous diet on immune and metabolic response of children with burns. METHODS This was a double-blind, randomized, placebo-controlled trial in a burn treatment center of a pediatric hospital in Santiago, Chile. All children (1-5 y of age) admitted within(More)
Unlike previous emotional studies using functional neuroimaging that have focused on either locating discrete emotions in the brain or linking emotional response to an external behavior, this study investigated brain regions in order to validate a three-dimensional construct--namely pleasure, arousal, and dominance (PAD) of emotion induced by marketing(More)
INTRODUCTION Amputation is a rare procedure among burned patients. However, it has significant physical and psychological consequences which impact quality of life. OBJECTIVE To study the incidence, etiology and prognostic factors associated with amputation among burned patients in Chile. METHODS Cohort study of patients admitted to the Reference Burn(More)
Sodium, potassium, and chloride concentrations were determined in the sheath cells and axoplasm of the nerve fiber of the squid Sepioteuthis sepioidea. The sheaths were obtained by slitting the nerve fiber, the extracellular electrolytes were washed out in isotonic sucrose solution, and the concentrations in the cells were determined after different soaking(More)
The purpose of this study was to understand the effect that individual characteristics have on consumer advertising processing under high- and low-interactivity circumstances on the Web. Tests on the relationship between individual differences and advertising responses form the basis of this empirical study on the Web. The results indicated that consumers(More)
The penetration of (14)C-labeled erythritol, mannitol, and sucrose through the axolemma was determined in medium sized paired axons, one at rest and the other stimulated 25 times per sec. The resting permeabilities, in 10(-7) cm/sec, are erythritol, 2.9 +/- 0.3 (mean +/- SEM); mannitol, 2.3 +/- 0.4; and sucrose 0.9 +/- 0.1. In the stimulated axons they are:(More)