Does PIN Affect Equity Prices around the World?

This study examines the empirical controversy over the pricing effect of the Easley, Hvidkjaer, and O׳Hara (2002) probability of information-based trading, PIN, on a sample of 30,095 firms from 47 countries worldwide. Contrary to the empirical evidence of Easley, Hvidkjaer, and O׳Hara, but consistent with that of Duarte and Young (2009), we do not find that PIN exhibits a positive effect on a cross section of expected stock returns in international markets. Alternative information-based trading measures also display no effect on expected stock returns, corroborating our finding that information risk proxied by PIN, in general, has no pricing effect in world markets.postprin

Real Effects of Stock Underpricing

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Portuguese self-reported oral-hygiene habits and oral status

Background: Good oral health is essential for good general health and quality of life. In Portugal, there are few studies on oral-health habits and the population's perceptions of this behaviour. Objective: The main purpose of this study was to characterise the Portuguese population's self-reported oral-health status, habits and perceptions, as well as their demands regarding national oral health-care services. Methods: A randomised group of 1,395 individuals, > 15 years of age, was selected as a representative sample of the Portuguese population. Face-to-face interviews were conducted, based on a structured questionnaire with closed and semi-closed questions. The data were submitted for statistical analysis using SPSS. Results and discussion: A sample of 1,102 individuals answered the questionnaire. The great majority of the sample (97.6%) brushed their teeth daily, 70.3% had lost permanent teeth and 6.4% were edentulous. The loss of permanent teeth was statistically associated with poor oral-hygiene habits (P < 0.01). Moreover, 50.1% of the participants had experienced difficulty eating and/or drinking, 18% had felt ashamed of the appearance of their teeth and 69.3% had experienced toothache or gingival pain. A reduction in visits to a dentist in the previous 12 months was identified mainly for people from a lower social class (31.2%) and older people (29.4%). Conclusion: Evidence suggests that oral diseases might be more prevalent in Portuguese adults than the European average. Efforts should be made to promote good oral-hygiene habits among older people and people from lower social classes

The Legacy of Leaded Gasoline in Bottom Sediment of Small Rural Reservoirs

The historical and ongoing lead (Pb) contamination caused by the 20th-century use of leaded gasoline was investigated by an analysis of bottom sediment in eight small rural reservoirs in eastern Kansas, USA. For the reservoirs that were completed before or during the period of maximum Pb emissions from vehicles (i.e., the 1940s through the early 1980s) and that had a major highway in the basin, increased Pb concentrations reflected the pattern of historical leaded gasoline use. For at least some of these reservoirs, residual Pb is still being delivered from the basins. There was no evidence of increased Pb deposition for the reservoirs completed after the period of peak Pb emissions and (or) located in relatively remote areas with little or no highway traffic. Results indicated that several factors affected the magnitude and variability of Pb concentrations in reservoir sediment including traffic volume, reservoir age, and basin size. The increased Pb concentrations at four reservoirs exceeded the U.S. Environmental Protection Agency threshold-effects level (30.2 mg kg-1) and frequently exceeded a consensus-based threshold-effects concentration (35.8 mg kg-1) for possible adverse biological effects. For two reservoirs it was estimated that it will take at least 20 to 70 yr for Pb in the newly deposited sediment to return to baseline (pre-1920s) concentrations (30 mg kg-1) following the phase out of leaded gasoline. The buried sediment with elevated Pb concentrations may pose a future environmental concern if the reservoirs are dredged, the dams are removed, or the dams fail

Spinal cord stimulation for chronic non-cancer pain: a review of current evidence and practice

Spinal cord stimulation provides analgesia through electrical stimulation of the dorsal column of the spinal cord via electrode leads placed into the epidural space. In traditional tonic stimulation, a painful sensation is replaced with paraesthesia. Spinal cord stimulation is effective in reducing neuropathic pain, enhancing function, and improving quality of life in different chronic pain conditions. Currently, there is most evidence to support its use for failed back surgery syndrome when multidisciplinary conventional management is unsuccessful. Temporary trial leads are inserted in carefully selected patients to test their responsiveness prior to permanent implantation. Newer neuromodulation modalities are now available. These include burst stimulation, high-frequency stimulation, and dorsal root ganglion stimulation. Results are encouraging to date, and they may provide superior analgesia and cover for deficiencies of traditional tonic stimulation. Although complications are not uncommon, they are rarely life threatening or permanently disabling. Nonetheless, device removal is occasionally needed.link_to_OA_fulltex

Is Early Sport Specialization Harming Our Children?

Sports and physical activity in children are healthy and have numerous positive mental and physical health benefits. Recently, there has been a shift away from deliberate play and focusing on specializing in a single sport from a young age. Participating in rigorous training and competition schedules 8 months out of the year for prepubescent athletes has garnered attention from the medical community. It is assumed that this type of early specialization has the potential to cause negative effects, especially in terms of overuse injuries, nutritional deficiencies, poor sleep hygiene, and mental health concerns. While there appears to be a consensus among the sports medicine community regarding the potential for deleterious effects and anecdotal correlation between early sport specialization and a variety of injury risks, there is a current gap in the literature and a lack of useful data for evidence-based guidelines and recommendations. Youth sports is a multi-billion dollar industry and the pediatric sports medicine healthcare community needs to address the trend towards early sport specialization to protect the health of our children now and as they grow into adulthood

Impact of macro-socioeconomic determinants on perinatal healthcare quality for very preterm infants

The WHO identified the importance of macro-socioeconomic determinants and the political context as interlinked key factors affecting health equity. The 2008 economic crisis was associated with a significant low-birth-weight increase in Portugal, 2007-2014. The Economic Adjustment Programme (EAP), implemented to economize non-essential health care costs (2011-2014), substantially affected healthcare delivery and occupational environment of Healthcare Professionals (HCPs). This study aims to analyse the impact observed by HCPs of the economic crisis and EAP on equitable quality of perinatal healthcare for very preterm infants in Portugal. A Qualitative study design with 21 HCPs in clinical settings equally distributed among Portuguese mainland were selected according to their response. Semi-structured interviews were conducted between October 2018-April 2019 until saturation point was achieved. A content analysis was performed using Nvivo2011 software. Preliminary results on macro-socioeconomic determinants, classified and conceptualized into a three-stage-effect framework, disclosed an interrelation between factors impacting perinatal healthcare quality, according to HCPs. Primary-stage: increase in working hours and patient-ratio per HCPs, cuts in salaries and investment, increasing waiting time and HCPs demotivation. Secondary-stage: burnout, work-absence, time constraints, decreasing quality and consultation availability. Tertiary-stage: HCPs Brain-drain to private sector, double-shifts in public-private sector, increasing inadequacy of transmissivity within sector communication. The economic crisis and EAP were perceived to have modified equitable perinatal healthcare quality for very preterm infants in Portugal. Increased private-public sector transparency to maximise quality assurance, equal HCP wage distribution to sustain capability, strengthening of social maternity protection strategies to enhance socioeconomic equity in perinatal healthcare, is recommended

Efficacy of Pregabalin in Acute Postoperative Pain Under Different Surgical Categories: a meta-analysis

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Feasibility Randomized Controlled Trial of ImpulsePal: Smartphone App–Based Weight Management Intervention to Reduce Impulsive Eating in Overweight Adults

This is the final version. Available from JMIR Publications via the DOI in this record.Background: ImpulsePal is a theory-driven (dual-process), evidence-informed, and person-centered smartphone app intervention designed to help people manage impulsive processes that prompt unhealthy eating to facilitate dietary change and weight loss. Objective: The aims of this study were to (1) assess the feasibility of trial procedures for evaluation of the ImpulsePal intervention, (2) estimate standard deviations of outcomes, and (3) assess usability of, and satisfaction with, ImpulsePal. Methods: We conducted an individually randomized parallel two-arm nonblinded feasibility trial. The eligibility criteria included being aged ≥16 years, having a body mass index of ≥25 kg/m2, and having access to an Android-based device. Weight was measured (as the proposed primary outcome for a full-scale trial) at baseline, 1 month, and 3 months of follow-up. Participants were randomized in a 2:1 allocation ratio to the ImpulsePal intervention or a waiting list control group. A nested action-research study allowed for data-driven refinement of the intervention across 2 cycles of feedback. Results: We screened 179 participants for eligibility, and 58 were randomized to the intervention group and 30 to the control group. Data were available for 74 (84%, 74/88) participants at 1 month and 67 (76%, 67/88) participants at 3 months. The intervention group (n=43) lost 1.03 kg (95% CI 0.33 to 1.74) more than controls (n=26) at 1 month and 1.01 kg (95% CI −0.45 to 2.47) more than controls (n=43 and n=24, respectively) at 3 months. Feedback suggested changes to intervention design were required to (1) improve receipt and understanding of instructions and (2) facilitate further engagement with the app and its strategies. Conclusions: The evaluation methods and delivery of the ImpulsePal app intervention are feasible, and the trial procedures, measures, and intervention are acceptable and satisfactory to the participants. Trial Registration: International Standard Randomized Controlled Trial Number (ISRCTN): 14886370; http://www.isrctn.com/ISRCTN14886370 (Archived by WebCite at http://www.webcitation.org/76WcEpZ51)University of ExeterNational Institute for Health Research (NIHR