Perceptions of Sports and Energy Drinks: Factors Associated with Adolescent Beliefs.

PURPOSE: To understand what factors are associated with adolescents' perceived healthfulness of sports drinks (SD) and of energy drinks (ED), with a focus on health risk, athletics, and media-related variables. DESIGN: Cross-sectional survey. SETTING: Online. SUBJECTS: U.S. adolescents ages 14-18 years (n = 501) recruited from a combination of non-probability and probability-based panels. MEASURES: Outcome variables were perceived healthfulness of SDs and of EDs. Independent variables included adolescents' health background (oral health, diabetes risk, self-reported weight); behaviors (SD and ED consumption, athletic identity, sports participation, physical activity), and media items (media literacy, exposure to advertisements on TV, YouTube, social media). RESULTS: Regression results indicated that adolescents' increased perception that SDs are healthy was significantly associated (P<.05 level) with casual sports participation (b=.56, se=.27), athletic identification (b=.28, se= .11), exposure to SD advertisements on social media (b=.55, s =.25), and higher consumption (b=.28, se= .13). For adolescents' perceptions of EDs, significantly related correlates included athletic identification (b=.26, se=10), having an increased risk of diabetes (b= -.79, s =.26), poorer oral health (b=.33, se=.16), and consumption (b=.76, s =.16); increased media literacy was associated with more accurate perceptions (b=-.35, se=.14). CONCLUSIONS: Adolescents' hold different perceptions about the healthfulness of sports and energy drink, and their beliefs about each drink are related to different types of factors that may have implications for public health interventions. Cross-sectional survey design and adolescent self-reports are limitations.

Bilateral posterior cerebral artery infarction.

We report the case of a 70-year-old man who presented with short-term memory impairment and a homonymous left inferior quadrantanopia secondary to simultaneous bilateral posterior cerebral artery (PCA) territory infarction. As in more than a quarter of cases of PCA infarction, no aetiological cause was identified. Unlike the transient nature of symptoms in some cases following unilateral infarction, his deficits persisted on 2-month follow-up.

Confidence limits and sample size for determining nonhost status of fruits and vegetables to tephritid fruit flies as a quarantine measure.

Quarantine measures including treatments are applied to exported fruit and vegetable commodities to control regulatory fruit fly pests and to reduce the likelihood of their introduction into new areas. Nonhost status can be an effective measure used to achieve quarantine security. As with quarantine treatments, nonhost status can stand alone as a measure if there is high efficacy and statistical confidence. The numbers of insects or fruit tested during investigation of nonhost status will determine the level of statistical confidence. If the level of confidence of nonhost status is not high, then additional measures may be required to achieve quarantine security as part of a systems approach. Certain countries require that either 99.99 or 99.9968% mortality, as a measure of efficacy, at the 95% confidence level, be achieved by a quarantine treatment to meet quarantine security. This article outlines how the level of confidence in nonhost status can be quantified so that its equivalency to traditional quarantine treatments may be demonstrated. Incorporating sample size and confidence levels into host status testing protocols along with efficacy will lead to greater consistency by regulatory decision-makers in interpreting results and, therefore, to more technically sound decisions on host status.

World Trade Center human identification project: experiences with individual body identification cases.

AIM: To present individual body identification efforts, as part of the World Trade Center (WTC) mass disaster identification project. METHODS: More than 500 samples were tested by using polymerase chain reaction (PCR) amplification and short tandem repeat (STR) typing. The extent to which the remains were fragmented and affected by taphonomic factors complicated the identification project. Anthropologists reviewed 19,000 samples, and detected inconsistencies in 69, which were further split into 239 new cases and re-sampled by DNA specialists. RESULTS: The severity and nature of the disaster required an interdisciplinary effort. DNA profiling of 500 samples was successful in 75% of the cases. All discrepancies, which occurred between bone and tissue samples taken from the same body part, were resolved by re-sampling and re-testing of preferably bone tissue. Anthropologists detected inconsistencies in 69 cases, which were then split into 239 new cases. Out of 125 "split" cases, 65 were excluded from their original case. Of these 65 cases, 37 did not match any profiles in M-FISys, probably because profiles were incomplete or no exemplar for the victim was available. Out of the 60 remains not excluded from their original case, 30 were partial profiles and did not reach the statistical requirement to match their original case, because the population frequency of the DNA profile had to be