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1.
Am J Infect Control ; 52(1): 125-128, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37544513

RESUMO

In this online survey of 1,733 US adults in December 2021, respondents believed COVID-19 vaccines are less beneficial and less safe for someone who had already had COVID-19. Those who experienced COVID-19 after being vaccinated believed that the vaccines are less beneficial and less safe than those who had not. Findings highlight the need to better communicate evolving evidence of COVID-19 vaccine benefit and safety and to tailor communications to peoples' COVID-19 history and vaccination status.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Vacinas , Adulto , Humanos , Comunicação , COVID-19/prevenção & controle , Vacinas contra COVID-19/efeitos adversos , Vacinação/efeitos adversos
2.
Nat Commun ; 14(1): 2713, 2023 05 11.
Artigo em Inglês | MEDLINE | ID: mdl-37169763

RESUMO

Metal ions are essential cofactors for many proteins and play a crucial role in many applications such as enzyme design or design of protein-protein interactions because they are biologically abundant, tether to the protein using strong interactions, and have favorable catalytic properties. Computational design of metalloproteins is however hampered by the complex electronic structure of many biologically relevant metals such as zinc . In this work, we develop two tools - Metal3D (based on 3D convolutional neural networks) and Metal1D (solely based on geometric criteria) to improve the location prediction of zinc ions in protein structures. Comparison with other currently available tools shows that Metal3D is the most accurate zinc ion location predictor to date with predictions within 0.70 ± 0.64 Å of experimental locations. Metal3D outputs a confidence metric for each predicted site and works on proteins with few homologes in the protein data bank. Metal3D predicts a global zinc density that can be used for annotation of computationally predicted structures and a per residue zinc density that can be used in protein design workflows. Currently trained on zinc, the framework of Metal3D is readily extensible to other metals by modifying the training data.


Assuntos
Aprendizado Profundo , Metaloproteínas , Sítios de Ligação , Metais/química , Zinco/metabolismo , Metaloproteínas/metabolismo , Íons/química
3.
JAMA Netw Open ; 6(3): e231587, 2023 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-36877524

RESUMO

This survey study assesses whether parents had ever engaged in specific misrepresentation and nonadherence behaviors regarding public health measures for preventing COVID-19 transmission among children.


Assuntos
COVID-19 , Pais , Cooperação do Paciente , Criança , Humanos , COVID-19/prevenção & controle
4.
J Chem Inf Model ; 63(5): 1406-1412, 2023 03 13.
Artigo em Inglês | MEDLINE | ID: mdl-36811959

RESUMO

MiMiC is a highly flexible, extremely scalable multiscale modeling framework. It couples the CPMD (quantum mechanics, QM) and GROMACS (molecular mechanics, MM) codes. The code requires preparing separate input files for the two programs with a selection of the QM region. This can be a tedious procedure prone to human error, especially when dealing with large QM regions. Here, we present MiMiCPy, a user-friendly tool that automatizes the preparation of MiMiC input files. It is written in Python 3 with an object-oriented approach. The main subcommand PrepQM can be used to generate MiMiC inputs directly from the command line or through a PyMOL/VMD plugin for visually selecting the QM region. Many other subcommands are also provided for debugging and fixing MiMiC input files. MiMiCPy is designed with a modular structure that allows seamless extensions to new program formats depending on the requirements of MiMiC.


Assuntos
Teoria Quântica , Software , Humanos , Simulação de Dinâmica Molecular
5.
JAMA Netw Open ; 5(10): e2235837, 2022 10 03.
Artigo em Inglês | MEDLINE | ID: mdl-36215070

RESUMO

Importance: The effectiveness of public health measures implemented to mitigate the spread and impact of SARS-CoV-2 relies heavily on honesty and adherence from the general public. Objective: To examine the frequency of, reasons for, and factors associated with misrepresentation and nonadherence regarding COVID-19 public health measures. Design, Setting, and Participants: This survey study recruited a national, nonprobability sample of US adults to participate in an online survey using Qualtrics online panels (participation rate, 1811 of 2260 [80.1%]) from December 8 to 23, 2021. The survey contained screening questions to allow for a targeted sample of one-third who had had COVID-19, one-third who had not had COVID-19 and were vaccinated, and one-third who had not had COVID-19 and were unvaccinated. Main Outcomes and Measures: The survey assessed 9 different types of misrepresentation and nonadherence related to COVID-19 public health measures and the reasons underlying such behaviors. Additional questions measured COVID-19-related beliefs and behaviors and demographic characteristics. Results: The final sample included 1733 participants. The mean (SD) participant age was 41 (15) years and the sample predominantly identified as female (1143 of 1732 [66.0%]) and non-Hispanic White (1151 of 1733 [66.4%]). Seven hundred twenty-one participants (41.6%) reported misrepresentation and/or nonadherence in at least 1 of the 9 items; telling someone they were with or about to be with in person that they were taking more COVID-19 preventive measures than they actually were (420 of 1726 [24.3%]) and breaking quarantine rules (190 of 845 [22.5%]) were the most common manifestations. The most commonly endorsed reasons included wanting life to feel normal and wanting to exercise personal freedom. All age groups younger than 60 years (eg, odds ratio for those aged 18-29 years, 4.87 [95% CI, 3.27-7.34]) and those who had greater distrust in science (odds ratio, 1.14 [95% CI, 1.05-1.23]) had significantly higher odds of misrepresentation and/or nonadherence for at least 1 of the 9 items. Conclusions and Relevance: In this survey study of US adults, nearly half of participants reported misrepresentation and/or nonadherence regarding public health measures against COVID-19. Future work is needed to examine strategies for communicating the consequences of misrepresentation and nonadherence and to address contributing factors.


Assuntos
COVID-19 , Adulto , COVID-19/epidemiologia , COVID-19/prevenção & controle , Feminino , Humanos , Saúde Pública , Quarentena , SARS-CoV-2 , Inquéritos e Questionários
6.
Nanoscale ; 13(30): 13000-13013, 2021 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-34477783

RESUMO

Inorganic nanoparticles are gaining increasing attention as drug carriers because they respond to external physical stimuli, allowing therapy to be combined with diagnosis. Their drawback is low drug loading capacity, which can be improved by proper and efficacious functionalization. In this computational study, we take TiO2 spherical nanoparticles as prototype photoresponsive inorganic nanoparticles and we fully decorate them with two different types of bifunctional ligands: TETTs and DOPACs, which present different surface anchoring groups (silanol or catechol) but the same drug tethering COOH group, although in different concentrations (3 vs. 1), thus causing different steric hindrances. Then, we put these two types of nanocarriers in bulk water and in the presence of several DOX molecules and let the systems evolve through molecular dynamics (MD) simulations, clearly observing drug loading on the nanocarriers. This comparative MD study allows the investigation of the loading mechanism, performance of a conformational analysis and establishment of the guiding interactions through an energy decomposition analysis. We learn that DOX mostly interacts with the functionalized NPs through electrostatics, as a consequence of the protonated amino group, although several H-bonds are also established both with the ligands and with the oxide surface. Different ligands induce a different electrostatic potential around the NP; therefore, those which lead to the formation of more negative hotspots (here TETTs) are found to favour DOX binding. The leading role of electrostatics can provide a rational explanation for a pH-dependent drug release mechanism that is often invoked for DOX when reaching diseased cells because under anomalous acidic conditions both the NP surface and the carboxylate groups of the ligands are expected to get protonated, which of course would weaken, if not totally quench, the interaction of the nanocarrier with protonated DOX.


Assuntos
Doxorrubicina , Nanopartículas , Portadores de Fármacos , Liberação Controlada de Fármacos , Concentração de Íons de Hidrogênio , Simulação de Dinâmica Molecular
7.
JAMA Netw Open ; 2(8): e199277, 2019 08 02.
Artigo em Inglês | MEDLINE | ID: mdl-31411716

RESUMO

Importance: Patient disclosure to their clinician about experiencing an imminent threat is a critical step toward receiving support or assistance. Objective: To examine the frequency of patients not disclosing their experience of imminent threats to their clinician and their reasons for doing so. Design, Setting, and Participants: Survey study incorporating results from 2 national, nonprobability samples of 2011 US adults recruited from Amazon's Mechanical Turk (MTurk) from March 16 to 30, 2015, and 2499 recruited from Survey Sampling International (SSI) from November 6 to 17, 2015. Data analysis was conducted from December 20 to 28, 2018. Main Outcomes and Measures: Self-reported nondisclosure of 4 types of imminent threats (depression, suicidality, abuse, and sexual assault) to their clinician and reasons for nondisclosure. Results: There were 2011 participants in the MTurk sample (1210 [60.3%] female; 1696 [60.2%] white; mean [SD] age, 35.7 [12.4] years; age range, 18-79 years) and 2499 participants (1273 [51.0%] female; 1968 [78.8%] white; mean [SD] age, 61.0 [7.6] years; age range, 50-91 years) in the SSI sample. Among those who reported experiencing at least 1 of the 4 imminent threats, 613 of 1292 MTurk participants (47.5%) and 581 of 1453 SSI participants (40.0%) withheld information from their clinician. The most commonly endorsed reasons for withholding this information included being embarrassed (MTurk: 72.7%; SSI: 70.9%), not wanting to be judged or lectured (MTurk: 66.4%; SSI: 53.4%), and not wanting to engage in a difficult follow-up behavior (MTurk: 62.4%; SSI: 51.1%). Respondents who experienced at least 1 of the 4 imminent threats had significantly higher odds of nondisclosure in both samples if they were female (MTurk: odds ratio [OR], 1.66 [95% CI, 1.30-2.11]; and SSI: OR, 1.33 [95% CI, 1.07-1.67]) or younger (MTurk: OR, 0.99 [95% CI, 0.98-1.00]; and SSI: OR, 0.98 [95% CI, 0.97-1.00]). Worse self-rated health was also associated with nondisclosure, but only in the SSI sample (OR, 0.85 [95% CI, 0.74-0.96]). Conclusions and Relevance: This study suggests that many people withhold information from their clinicians about imminent health threats that they face. A better understanding of how to increase patients' comfort with reporting this information is critical to allowing clinicians to help patients mitigate these potentially life-threatening risks.


Assuntos
Depressão/psicologia , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Relações Médico-Paciente , Autorrevelação , Delitos Sexuais/psicologia , Maus-Tratos Conjugais/psicologia , Ideação Suicida , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Crowdsourcing , Depressão/diagnóstico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Autorrelato , Inquéritos e Questionários , Estados Unidos , Adulto Jovem
8.
JAMA Netw Open ; 1(7): e185293, 2018 11 02.
Artigo em Inglês | MEDLINE | ID: mdl-30646397

RESUMO

Importance: Patient failure to disclose medically relevant information to clinicians can undermine patient care or even lead to patient harm. Objective: To examine the frequency of patients failing to disclose to their clinicians information that is relevant to their care and their reasons for doing so. Design, Setting, and Participants: Two national nonprobability samples were recruited to participate in an online survey, one using Amazon's Mechanical Turk (MTurk) from March 16 to 30, 2015 (2096 respondents), followed by one using Survey Sampling International (SSI) from November 6 to 17, 2015 (3011 respondents). Data analysis was conducted from September 28 to October 8, 2018. After dropping respondents meeting the exclusion criteria, the final sample sizes were 2011 (MTurk) and 2499 (SSI). Main Outcomes and Measures: The primary outcome measures were self-reported nondisclosure of 7 types of information to their clinician (eg, did not understand instructions, medication use) and reasons for nondisclosure (eg, embarrassment, not wanting to be judged). Results: There was a total of 4510 overall respondents. Of 2096 respondents, 2013 completed the MTurk survey (96.0% completion rate) and 2011 were included in the analysis. Of 3011 respondents, 2685 completed the SSI survey (89.2% completion rate) and 2499 were included in the analysis. The mean (SD) age of the participants was 36 (12.4) years for MTurk and 61 (7.59) years for SSI. Both samples were predominantly white (MTurk: 1696 [84.3%]; SSI: 1968 [78.8%]). A total of 1630 MTurk participants (81.1%) and 1535 SSI participants (61.4%) avoided disclosing at least 1 type of information. Disagreeing with the clinician's recommendation (MTurk: 918 of 2010 respondents [45.7%]; SSI: 785 of 2497 respondents [31.4%]) and not understanding the clinician's instructions (MTurk: 638 of 2009 respondents [31.8%]; SSI: 607 of 2497 respondents [24.3%]) were the most common occurrences. The most commonly reported reasons for nondisclosure included not wanting to be judged or lectured (MTurk: 81.8% [95% CI, 79.8%-83.9%]; SSI: 64.1% [95% CI, 61.5%-66.7%]), not wanting to hear how harmful the behavior is (MTurk: 75.7% [95% CI, 73.5%-78.0%]; SSI: 61.1% [95% CI, 58.5%-63.8%]), and being embarrassed (MTurk: 60.9% [95% CI, 58.9%-62.9%]; SSI: 49.9% [95% CI, 47.8%-52.1%]). In both samples, participants who were women (MTurk: odds ratio [OR], 1.88 [95% CI, 1.49-2.37]; SSI: OR, 1.38 [95% CI, 1.17-1.64]), younger (MTurk: OR, 0.98 [95% CI, 0.97-0.99]; SSI: OR, 0.98 [95% CI, 0.97-0.99]), and with worse self-rated health (MTurk: OR, 0.87 [95% CI, 0.76-0.99]; SSI: OR, 0.80 [95% CI, 0.72-0.88]) were more likely to report withholding information. Conclusions and Relevance: Many respondents in these surveys intentionally withhold important information from their clinicians and were most likely to do so when they disagreed with or misunderstood their clinician's instructions. A better understanding of how to increase patients' comfort with reporting this information may improve the clinician-patient relationship and patient care.


Assuntos
Autorrelato/estatística & dados numéricos , Revelação da Verdade , Adolescente , Adulto , Idoso , Crowdsourcing , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Internet , Masculino , Pessoa de Meia-Idade , Modelos Teóricos , Relações Médico-Paciente , Prevalência , Inquéritos e Questionários , Adulto Jovem
9.
Womens Health Issues ; 22(5): e473-82, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22818247

RESUMO

BACKGROUND: Many women with coronary artery disease (CAD), commonly referred to as coronary heart disease, do not receive an annual office visit to manage their disease. We set out to determine what barriers factor into women not receiving an office visit to manage their disease. METHODS: A purposive sample of 26 eligible women (≥65 years of age) diagnosed with CAD completed in-depth, qualitative interviews. Systematic analysis of the content of interviews was performed on transcripts from these interviews. Participants with an AARP Medicare Supplement Insurance Plan insured by UnitedHealthcare insurance company that did not receive an annual office visit were eligible. In addition, we surveyed 100 physicians to obtain their thoughts about why women may not schedule at least one annual visit to manage their CAD. RESULTS: The most common barriers identified were skepticism of heart problems, having to take the initiative to schedule the appointment, and dealing with seemingly more pressing health problems. Many of these barriers identified were substantiated in a survey of physicians that treat women with CAD, but the relative rankings of the importance of these problems differed somewhat. CONCLUSIONS: Many women were skeptical about their heart health and often lacked the initiative to schedule a follow-up appointment. Most agreed that they would make an appointment if contacted by their doctor's office. Many of these women were receptive to the idea of receiving educational information by mail. Active involvement by doctors' offices to schedule appointments may help improve care, as might mail-based reminders.


Assuntos
Agendamento de Consultas , Atitude Frente a Saúde , Doença da Artéria Coronariana/diagnóstico , Doença da Artéria Coronariana/terapia , Visita a Consultório Médico/estatística & dados numéricos , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Atenção à Saúde/organização & administração , Feminino , Seguimentos , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Humanos , Entrevistas como Assunto , Medicare , Pessoa de Meia-Idade , Relações Médico-Paciente , Médicos , Pesquisa Qualitativa , Índice de Gravidade de Doença , Telefone , Estados Unidos
10.
J Prosthodont ; 21(6): 460-71, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22469330

RESUMO

PURPOSE: Health-related quality of life (HRQOL) is an important treatment outcome for head and neck cancer (HNC) patients. By ascertaining the most important HNC HRQOL issues, research and practice can be directed toward enhancing patient QOL. MATERIALS AND METHODS: A cross-sectional study of 46 ENT clinic HNC patients in Puerto Rico (PR) was completed. The European Organization for Research and Treatment of Cancer (EORTC) QLQ-C30 (general QOL), and the QLQ-H&N35 (HNC QOL) instruments were administered. Correlations and multivariable regressions were separately conducted for QLQ-H&N35 variables on the three QLQ-C30 outcome variables: overall health, overall QOL, and the global health/QOL domain. RESULTS: Correlation findings included statistically significant negative correlations between the three QLQ-C30 outcome variables and the QLQ-H&N35 variables pain, swallowing, social eating, social contact, and sexuality. Multivariable linear regression identified statistically significant inverse indicators of the outcomes: (1) "lessening of sexuality" with "overall health" (p= 0.02), (2) "problem with social eating" (p= 0.023), "taking pain killers" (p= 0.025), and "problem with social contact" (p= 0.035) with "overall QOL," and (3) "problems with social eating" (p < 0.009) and "taking pain killers" (p= 0.016) with the "global health/QOL" domain. CONCLUSIONS: We conclude that problems with pain, social eating, social interactions, and loss of sexuality are critical indicators of degraded HRQOL in HNC patients living in Puerto Rico. Our results add to the overall knowledge base regarding QOL among HNC patients. The promise of improved QOL for the HNC patient is attainable through additional research in conjunction with advances in clinical treatments and patient management protocols.


Assuntos
Neoplasias de Cabeça e Pescoço/psicologia , Qualidade de Vida , Idoso , Estudos Transversais , Deglutição , Dor Facial/tratamento farmacológico , Dor Facial/psicologia , Feminino , Saúde Global , Nível de Saúde , Humanos , Relações Interpessoais , Masculino , Mastigação , Pessoa de Meia-Idade , Porto Rico , Análise de Regressão , Comportamento Sexual
11.
Bull World Health Organ ; 89(9): 648-56, 2011 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-21897485

RESUMO

OBJECTIVE: To examine the feasibility of using community health workers (CHWs) to implement cardiovascular disease (CVD) prevention programmes within faith-based organizations in Accra, Ghana. METHODS: Faith-based organization capacity, human resources, health programme sustainability/barriers and community members' knowledge were evaluated. Data on these aspects were gathered through a mixed method design consisting of in-depth interviews and focus groups with 25 church leaders and health committee members from five churches, and of a survey of 167 adult congregants from two churches. FINDINGS: The delivery of a CVD prevention programme in faith-based organizations by CHWs is feasible. Many faith-based organizations already provide health programmes for congregants and involve non-health professionals in their health-care activities, and most congregants have a basic knowledge of CVD. Yet despite the feasibility of the proposed approach to CVD prevention through faith-based organizations, sociocultural and health-care barriers such as poverty, limited human and economic resources and limited access to health care could hinder programme implementation. CONCLUSION: The barriers to implementation identified in this study need to be considered when defining CVD prevention programme policy and planning.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Agentes Comunitários de Saúde , Promoção da Saúde/organização & administração , Religião e Medicina , Adulto , Estudos de Viabilidade , Feminino , Grupos Focais , Gana , Humanos , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade
12.
BMC Cancer ; 11: 165, 2011 May 11.
Artigo em Inglês | MEDLINE | ID: mdl-21569345

RESUMO

BACKGROUND: Partnership for Health-2 (PFH-2) is a web-based version of Partnership for Health, an evidence-based smoking cessation intervention for childhood cancer survivors. This paper describes the PFH-2 intervention and baseline data collection. METHODS: 374 childhood and young adult cancer survivors were recruited from five cancer centers and participated in the baseline assessment. At baseline, participants completed measures of their smoking behavior, self-efficacy and stage of change for quitting smoking as well as psychological and environmental factors that could impact their smoking behavior. RESULTS: At baseline, 93% of survivors smoked in the past seven days; however, 89% smoked a pack or less during this period. Forty-seven percent were nicotine dependent, and 55% had made at least one quit attempt in the previous year. Twenty-two percent of survivors were in contemplation for quitting smoking; of those 45% were somewhat or very confident that they could quit within six months. Sixty-three percent were in preparation for quitting smoking; however, they had relatively low levels of confidence that they could quit smoking in the next month. In multivariate analyses, stage of change, self-efficacy, social support for smoking cessation, smoking policy at work and home, fear of cancer recurrence, perceived vulnerability, depression, BMI, and contact with the healthcare system were associated with survivors' smoking behavior. DISCUSSIONS/CONCLUSIONS: A large proportion of the sample was nicotine dependent, yet motivated to quit. Individual- interpersonal- and environmental-level factors were associated with survivors' smoking behavior. Smoking is particularly dangerous for childhood and young adult cancer survivors. This population may benefit from a smoking cessation intervention designed to build self-efficacy and address other known predictors of smoking behavior.


Assuntos
Neoplasias , Projetos de Pesquisa , Abandono do Hábito de Fumar , Fumar/epidemiologia , Fumar/psicologia , Sobreviventes/psicologia , Sobreviventes/estatística & dados numéricos , Adulto , Terapia Comportamental/estatística & dados numéricos , Feminino , Promoção da Saúde/estatística & dados numéricos , Humanos , Internet , Masculino , Modelos Estatísticos , Análise Multivariada , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores de Risco , Autoeficácia , Abandono do Hábito de Fumar/métodos , Abandono do Hábito de Fumar/psicologia , Tabagismo/epidemiologia , Tabagismo/psicologia
14.
Psychooncology ; 18(1): 71-8, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18613299

RESUMO

BACKGROUND: While much is now known about breast cancer survivors' long-term health, quality of life, and psychological state, relatively little is known about the period immediately following completion of treatment, when women transition out of the role of breast cancer 'patient' to life as 'survivor'. OBJECTIVE: To explore women's fears regarding risk of cancer recurrence, sense of loss of medical monitoring, and social support from health-care providers and other patients, and the strategies they use to cope with these issues. METHOD: Focus group interviews were conducted with women who had completed adjuvant chemotherapy or radiation for new stage I or II breast cancer in the prior 12 months. Interviews were audio-taped, transcribed, and analyzed using a constant comparative analysis approach. RESULTS: Of 216 women identified as eligible, over half (155) were reached by telephone and invited to participate. Of those invited, 47 (30%) agreed. Findings suggest that while women acknowledge positive life changes as a result of the cancer experience, emotional and physical stresses are prevalent following the completion of treatment. CONCLUSION: The period of time when women who have been treated for breast cancer transition to life without treatment presents numerous emotional and physical challenges. By illuminating patients' experience during this transition period, this study provides insights into the development of interventions to support women after treatment.


Assuntos
Adaptação Psicológica , Neoplasias da Mama/reabilitação , Sobreviventes/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Boston , Neoplasias da Mama/psicologia , Feminino , Grupos Focais , Humanos , Acontecimentos que Mudam a Vida , Pessoa de Meia-Idade , Ajustamento Social , Apoio Social
15.
Risk Anal ; 28(6): 1531-8, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18795998

RESUMO

Conflict frequently occurs between community members and environmental/public health officials when an unusual number of cancer cases is reported. This conflict may result from different ways in which laypeople and experts interpret facts to judge whether there is an environmental cause of the cancer cases, but little is known about this issue. Volunteer laypeople (N= 551) and epidemiologists (N= 105) read a hypothetical scenario about cases of cancer on one neighborhood block. Participants judged whether each of the 23 facts about the situation made it "much more likely" to "much less likely" that something in town was causing the cancer cases (7-point scale). The facts were designed to be "alarming,""reassuring," or "neutral" (i.e., according to epidemiological principles, should increase, decrease, or have no impact on the likelihood of an environmental cause). The laypeople were alarmed by most of the facts (mean response significantly greater than the scale midpoint), including all of the neutral facts and over half of the reassuring facts. The experts were more balanced: they were alarmed by none of the neutral or reassuring facts. Their responses showed significantly less alarm than the laypeople's responses (p < 0.0001 for all comparisons). This study reveals that laypeople are not reassured by information that substantially lowers the chance of an environmental cause for cancer cases. Lay responses differ significantly and systematically from experts who are far less alarmed by relevant facts. These findings may help explain the conflicts between the two groups in situations where concern about cases of cancer arises in a community.


Assuntos
Neoplasias/epidemiologia , Neoplasias/etiologia , Adulto , Análise por Conglomerados , Comunicação , Epidemiologia , Feminino , Educação em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Saúde Pública , Projetos de Pesquisa , Risco , Inquéritos e Questionários
16.
Med Decis Making ; 28(2): 269-76, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18349431

RESUMO

BACKGROUND: People who exhibit value-induced bias- distorting relevant probabilities to justify medical decisions- may make suboptimal decisions. OBJECTIVE: The authors examined whether and in what conditions people exhibit value-induced bias. DESIGN: Volunteers on the Web imagined having a serious illness with 2 possible diagnoses and a treatment with the same "small probability'' of success for each diagnosis. The more serious diagnosis was designed as a clear-cut decision to motivate most subjects to choose treatment; the less serious diagnosis was designed to make the treatment a close-call choice. Subjects were randomized to estimate the probability of treatment success before or after learning their diagnosis. The "after group'' had the motivation and ability to distort the probability of treatment success to justify their treatment preference. In study 1, subjects learned they had the more serious disease. Consistent with value-induced bias, the after group was expected to give higher probability judgments than the ;;before group.'' In study 2, subjects learned they had the less serious disease, and the after group was expected to inflate the probability if they desired treatment and to reduce it if they did not, relative to the before group. RESULTS: In study 1, there was no difference in the mean probability judgment between groups, suggesting no distortion of probability. In study 2, the slope of probability judgment regressed on desire for treatment was steeper for the after group, indicating that distortion of probability did occur. CONCLUSION: In close-call but not clear-cut medical decisions, people may distort relevant probabilities to justify their preferred choices.


Assuntos
Tomada de Decisões , Julgamento , Adulto , Viés , Feminino , Humanos , Masculino , Medição de Risco
17.
J Gen Intern Med ; 23(3): 229-35, 2008 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-18188653

RESUMO

OBJECTIVE: Cancer risk calculators on the internet have the potential to provide users with valuable information about their individual cancer risk. However, the lack of oversight of these sites raises concerns about low quality and inconsistent information. These concerns led us to evaluate internet cancer risk calculators. DESIGN: After a systematic search to find all cancer risk calculators on the internet, we reviewed the content of each site for information that users should seek to evaluate the quality of a website. We then examined the consistency of the breast cancer risk calculators by having 27 women complete 10 of the breast cancer risk calculators for themselves. We also completed the breast cancer risk calculators for a hypothetical high- and low-risk woman, and compared the output to Surveillance Epidemiology and End Results estimates for the average same-age and same-race woman. RESULTS: Nineteen sites were found, 13 of which calculate breast cancer risk. Most sites do not provide the information users need to evaluate the legitimacy of a website. The breast cancer calculator sites vary in the risk factors they assess to calculate breast cancer risk, how they operationalize each risk factor and in the risk estimate they provide for the same individual. CONCLUSIONS: Internet cancer risk calculators have the potential to provide a public health benefit by educating individuals about their risks and potentially encouraging preventive health behaviors. However, our evaluation of internet calculators revealed several problems that call into question the accuracy of the information that they provide. This may lead the users of these sites to make inappropriate medical decisions on the basis of misinformation.


Assuntos
Internet , Informática Médica/métodos , Neoplasias/epidemiologia , Educação de Pacientes como Assunto , Estudos Transversais , Feminino , Humanos , Armazenamento e Recuperação da Informação , Masculino , Informática Médica/estatística & dados numéricos , Oncologia/normas , Oncologia/tendências , Neoplasias/diagnóstico , Reprodutibilidade dos Testes , Medição de Risco , Estados Unidos/epidemiologia
18.
Health Psychol ; 26(5): 545-53, 2007 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17845106

RESUMO

OBJECTIVE: It is unclear why nonmental healthcare utilization is greater among those with psychological problems. The authors examined healthcare utilization in HMO patients to determine whether greater utilization in anxiety disorder (AD) patients was explained by anxiety symptoms (increasing sensitivity to physical symptoms) or comorbid illness (causing greater need for services). DESIGN: Patients were randomly selected from the database of a multi-specialty practice and 1,041 completed a survey assessing psychological symptoms, health behaviors, and demographics. Anxiety symptoms were assessed by questionnaire and the presence of an AD was determined from the medical chart. Healthcare encounters and medication use were abstracted from medical charts and HMO claims data. MAIN OUTCOME MEASURES: Healthcare utilization. RESULTS: Both AD and anxiety symptoms predicted utilization, but symptoms were not associated with utilization in a model that also included AD. Comorbid illness was significantly associated with utilization independent of AD and somewhat reduced the strength of the AD-utilization association. The results were replicated in comparison of those with any psychiatric disorder to those without. CONCLUSION: Among those with AD, greater utilization is not explained by anxiety symptoms but is partly explained by greater comorbid illness. Further study is needed to understand excess healthcare utilization among AD patients.


Assuntos
Transtornos de Ansiedade , Serviços de Saúde/estatística & dados numéricos , Idoso , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Revisão da Utilização de Seguros , Masculino , Auditoria Médica , Pessoa de Meia-Idade , Estados Unidos
19.
Obes Surg ; 17(4): 445-51, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17608254

RESUMO

BACKGROUND: Binge-eating disorder (BED) may be associated with unsatisfactory weight loss in obese patients submitted to bariatric procedures. This study aims to investigate whether the presence of binge eating before Roux-en-Y gastric bypass (RYGBP) influences weight outcomes. METHODS: In a prospective design, 216 obese patients (37 males, 178 females, BMI=45.9 +/- 6.0 kg/m2) were assessed for the lifetime prevalence of BED and classified at structured interview into 3 subgroups: no binge eating (NBE=43), sub-threshold binge eating (SBE=129), and binge-eating disorder (BED=44). All patients were encouraged to take part in a multidisciplinary program following surgery, and weight loss at follow-up was used as the outcome variable. RESULTS: At 1-year follow-up, NBE patients (n=41) showed percent excess BMI loss (%EBL) significantly higher than SBE patients (n=112) (P=0.027), although this effect was not significantly different between NBE and BED patients (n=44). At 2-year follow-up, NBE patients (n=33) showed %EBL higher than SBE (n=64) (P=-0.003) and BED patients (n=34) (P<0.001). Nevertheless, we found no significant weight loss differences between SBE (subclinical) and BED (full criteria) patients at any period of follow-up. Preliminary results at 3-year follow-up suggest that such an effect may be enduring. CONCLUSION: The presence of a history of binge eating prior to treatment is associated with poorer weight loss in obese patients submitted to RYGBP. Because BED is highly prevalent in obese patients seeking bariatric surgery, its early recognition and treatment may be of important clinical value.


Assuntos
Bulimia/complicações , Derivação Gástrica , Obesidade/psicologia , Obesidade/cirurgia , Redução de Peso , Adulto , Imagem Corporal , Índice de Massa Corporal , Bulimia/epidemiologia , Bulimia/psicologia , Estudos de Casos e Controles , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prevalência , Resultado do Tratamento
20.
Cancer Epidemiol Biomarkers Prev ; 16(5): 998-1003, 2007 May.
Artigo em Inglês | MEDLINE | ID: mdl-17507628

RESUMO

BACKGROUND: A substantial proportion of US adults hold fatalistic beliefs about cancer prevention. Although evidence suggests that fatalistic beliefs discourage people from engaging in screening behaviors that can reduce their cancer risk, far less is known about associations between cancer fatalism and other prevention behaviors. We examined sociodemographic correlates of these beliefs and their associations with regular exercise, smoking, and fruit and vegetable consumption with a national sample of American adults. METHODS: Data were analyzed from the first wave of the Health Information National Trends Survey (HINTS 2003). HINTS used random-digit dialing to complete phone interviews with adult Americans (N = 6,369). RESULTS: Nearly half of respondents (47.1%) agreed that "It seems like almost everything causes cancer," 27.0% agreed that "There's not much people can do to lower their chances of getting cancer," and 71.5% agreed that "There are so many recommendations about preventing cancer, it's hard to know which ones to follow." These beliefs were stronger in subjects who were less educated but generally weaker among both African Americans and Hispanics relative to Whites. Fatalistic beliefs about cancer prevention were negatively associated with exercising weekly, not smoking, and eating five or more fruits and vegetables daily in multivariate analysis controlling for sociodemographic characteristics. CONCLUSIONS: Americans who hold fatalistic beliefs about cancer prevention may be at greater risk of cancer because they are less likely to engage in various prevention behaviors. Results have notable implications for future cancer communication and education efforts.


Assuntos
Medo , Comportamentos Relacionados com a Saúde , Conhecimentos, Atitudes e Prática em Saúde , Neoplasias/prevenção & controle , Neoplasias/psicologia , Dieta/psicologia , Escolaridade , Exercício Físico/psicologia , Feminino , Frutas , Inquéritos Epidemiológicos , Humanos , Entrevistas como Assunto , Modelos Logísticos , Masculino , Estado Civil , Pessoa de Meia-Idade , Análise Multivariada , Fatores de Risco , Fumar/psicologia , Fatores Socioeconômicos , Estados Unidos , Verduras
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