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1.
Ann Intern Med ; 175(3): JC32, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-35226529

RESUMEN

SOURCE CITATION: Senore C, Riggi E, Armaroli P, et al. Long-term follow-up of the Italian flexible sigmoidoscopy screening trial. Ann Intern Med. 2022;175:36-45. 34748376.


Asunto(s)
Neoplasias Colorrectales , Detección Precoz del Cáncer , Neoplasias Colorrectales/epidemiología , Neoplasias Colorrectales/mortalidad , Humanos , Incidencia , Tamizaje Masivo , Sigmoidoscopía
2.
J Infect Dis ; 226(10): 1743-1752, 2022 11 11.
Artículo en Inglés | MEDLINE | ID: mdl-35543272

RESUMEN

BACKGROUND: Laboratory screening for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a key mitigation measure to avoid the spread of infection among recruits starting basic combat training in a congregate setting. Because viral nucleic acid can be detected persistently after recovery, we evaluated other laboratory markers to distinguish recruits who could proceed with training from those who were infected. METHODS: Recruits isolated for coronavirus disease 2019 (COVID-19) were serially tested for SARS-CoV-2 subgenomic ribonucleic acid (sgRNA), and viral load (VL) by reverse-transcriptase polymerase chain reaction (RT-PCR), and for anti- SARS-CoV-2. Cluster and quadratic discriminant analyses of results were performed. RESULTS: Among 229 recruits isolated for COVID-19, those with a RT-PCR cycle threshold >30.49 (sensitivity 95%, specificity 96%) or having sgRNA log10 RNA copies/mL <3.09 (sensitivity and specificity 96%) at entry into isolation were likely SARS-CoV-2 uninfected. Viral load >4.58 log10 RNA copies/mL or anti-SARS-CoV-2 signal-to-cutoff ratio <1.38 (VL: sensitivity and specificity 93%; anti-SARS-CoV-2: sensitivity 83%, specificity 79%) had comparatively lower sensitivity and specificity when used alone for discrimination of infected from uninfected. CONCLUSIONS: Orthogonal laboratory assays used in combination with RT-PCR may have utility in determining SARS-CoV-2 infection status for decisions regarding isolation.


Asunto(s)
COVID-19 , Humanos , COVID-19/diagnóstico , SARS-CoV-2 , Prueba de COVID-19 , Sensibilidad y Especificidad , ARN , ARN Viral/genética , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa
3.
Ann Behav Med ; 56(4): 381-392, 2022 04 02.
Artículo en Inglés | MEDLINE | ID: mdl-34964460

RESUMEN

BACKGROUND: Coping via empathic responding may play a role in preventive behavior engagement during the COVID-19 pandemic, and unlike trait empathy, is a potentially alterable target for changing health behavior. PURPOSE: Our goal was to examine the role of empathic responding in preventive behavior engagement during the COVID-19 pandemic, independent of trait empathy and perceived threat of COVID-19. METHODS: Participants (N = 2,841) completed a baseline survey early in the pandemic, and a follow-up survey approximately 2 weeks later (M = 13.50 days, SD = 5.61). Preventive health behaviors, including physical distancing and hygiene practices, were assessed at both timepoints. Hierarchical linear regression examined the contributions of trait empathy, perceived threat of COVID-19, and empathic responding at baseline to preventive behaviors at follow-up. RESULTS: Controlling for baseline levels of preventive behaviors and demographic covariates, trait empathy and threat of COVID-19 at baseline were each independently associated with preventive behaviors at follow-up. An interaction between perceived threat and empathic responding indicated that those perceiving high threat of COVID-19 at baseline tended to report engaging in preventive behaviors at follow-up regardless of their levels of empathic responding, whereas for those reporting low levels of perceived threat, higher levels of empathic responding were associated with higher engagement in preventive behavior. CONCLUSIONS: When perceived threat of COVID-19 was low, higher empathic responding was associated with increased engagement in preventive behaviors regardless of trait empathy, suggesting that empathic responding can serve as an actionable target for intervention to promote preventive behavior during the pandemic.


Asunto(s)
COVID-19 , Adaptación Psicológica , COVID-19/prevención & control , Empatía , Estado de Salud , Humanos , Pandemias/prevención & control
4.
BMC Endocr Disord ; 20(1): 31, 2020 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-32131811

RESUMEN

BACKGROUND: Growing evidence suggests that leptin is critical for glycemic control. Impaired leptin signaling may also contribute to low adiponectin expression in obese individuals. We assessed the association of leptin and adiponectin with incident type 2 diabetes (T2D), their interactions with sex and obesity status, and mediation by insulin resistance. METHODS: We included study participants from the Jackson Heart Study, a prospective cohort of adult African Americans in Jackson, Mississippi, that were free of T2D at the baseline Exam 1. Incident T2D was defined as new cases at Exam 2 or Exam 3. We created separate Cox regression models (hazard ratios per log-transformed ng/mL of leptin and adiponectin) with and without insulin resistance, HOMA-IR. Mediation by insulin resistance was analyzed. Several interactions were assessed, including by sex, HbA1c, and obesity. RESULTS: Among our 3363 participants (mean age 53 years, 63% women), 584 developed incident T2D. Leptin was directly associated with incident T2D when modeled without HOMA-IR (HR = 1.29, 95% CI = 1.05-1.58). This direct association between leptin and T2D was significant among men (HR = 1.33, 95% CI = 1.05-1.69), but nonsignificant among women (HR = 1.24, 95% CI = 0.94-1.64); statistical interaction with sex was nonsignificant (p = 0.65). The associations in all participants and in men were nullified by HOMA-IR (HR = 0.99, 95% CI = 0.80-1.22; HR = 1.00, 95% CI = 0.78-1.28, respectively), indicating mediation through insulin resistance (proportion mediated: 1.04), and were not observed in abdominally obese participants. Adiponectin was inversely associated with T2D even after adjustment for HOMA-IR in women (HR = 0.68, 95% CI = 0.55-0.84), but not in men (HR = 0.80, 95% CI = 0.62-1.04). The inverse association was present only among abdominally obese participants, and persisted after adjustment for HOMA-IR. CONCLUSIONS: Among African Americans in the Jackson Heart Study the association of leptin with incident type 2 diabetes was mediated by insulin resistance. This association was present only among abdominally non-obese participants. Differences by sex appeared: men showed a significant association mediated by insulin resistance. Among abdominally obese participants, adiponectin was inversely associated with incident T2D even after adjustment for HOMA-IR. Our results should inform future clinical trials that aim to reduce the burden of type 2 diabetes through the modification of serum levels of leptin and adiponectin.


Asunto(s)
Adiponectina/sangre , Biomarcadores/sangre , Negro o Afroamericano/estadística & datos numéricos , Diabetes Mellitus Tipo 2/epidemiología , Resistencia a la Insulina , Leptina/sangre , Obesidad/fisiopatología , Adulto , Anciano , Anciano de 80 o más Años , Glucemia/análisis , Índice de Masa Corporal , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/patología , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos , Factores de Riesgo , Estados Unidos/epidemiología , Adulto Joven
5.
Aging Ment Health ; 23(2): 246-254, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-29110517

RESUMEN

OBJECTIVE: Research has repeatedly shown that reminiscence affects the mental health and well-being of older adults contemporaneously and over time. Cross-sectional research also points to a link between reminiscence and physical health. The direction of this relationship is unclear, however. Does physical health affect how and why older adults think of themselves in the past? Or conversely, do various functions of reminiscence affect both mental and physical health now, and in future? METHODS: Online responses were collected from a primarily Canadian sample of 411 older adults at three time points, separated by eight months on average. Participants responded to the Reminiscence Functions Scale at baseline and reported their health conditions, perceived state of health, life satisfaction, and psychological distress at subsequent points of measurement. A structural equation model was computed to identify direct and indirect associations between reminiscence functions and health over time. RESULTS: Self-negative reminiscence functions at baseline (T1) predicted physical health 8 months later (T2), whereas self-positive reminiscence functions at T1 predicted both physical health and psychological distress at T2. The associations among self-positive functions and subsequent physical and mental health were maintained over time. Additionally, longitudinal crossover was observed in which psychological distress at T2 predicted physical health at T3, controlling for physical and mental health at T2. CONCLUSIONS: Findings confirm longitudinal associations among reminiscence functions and subsequent indicators of health. For older adults, this extends to both physical and mental health. Future research should examine the physiological mechanisms by which autobiographical memory affects health over time.


Asunto(s)
Ansiedad/fisiopatología , Depresión/fisiopatología , Estado de Salud , Memoria Episódica , Recuerdo Mental/fisiología , Satisfacción Personal , Distrés Psicológico , Anciano , Canadá , Femenino , Humanos , Estudios Longitudinales , Masculino
6.
Aging Ment Health ; 22(6): 794-801, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-28436681

RESUMEN

OBJECTIVES: Across age groups, bipolar disorder (BD) carries the greatest risk of death by suicide of all psychiatric conditions; 25%-50% of those with BD will make one or more suicide attempt. Psychometrically sound instruments are required to reliably measure suicide ideation and risk of self-harm for older adults with BD. For this study, we validate the geriatric suicide ideation scale (GSIS) with adults 50+ years with BD. METHODS: We recruited a global sample of 220 older adults with BD (M = 58.50 years of age) over 19 days using socio-demographically targeted, social media advertising and online data collection. To demonstrate the construct validation of GSIS responses by older adults with BD, we computed correlations and performed regression analyses to identify predictors of suicide ideation. RESULTS: Our analyses support a four-factor model of responses to the GSIS (ideation, death ideation, loss of personal and social worth, and perceived meaning in life) measuring a higher order latent construct. Older adults with BD reporting low satisfaction with life and current depressive symptoms, and who misuse alcohol, report significantly higher levels of suicide ideation. Sleep quality and cognitive failures are also correlated with GSIS responses. CONCLUSIONS: Results support the factorial validity of the GSIS with older adults with BD. Similar to other populations, the GSIS measures a four-factor structure of suicide ideation. Across BD subtypes, the GSIS appears to reliably measure suicide ideation among older adults with BD.


Asunto(s)
Trastorno Bipolar , Evaluación Geriátrica , Escalas de Valoración Psiquiátrica/normas , Psicometría/normas , Ideación Suicida , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados
7.
Memory ; 25(3): 403-411, 2017 03.
Artículo en Inglés | MEDLINE | ID: mdl-27145425

RESUMEN

The current study examines the temporal stability of the tripartite model of reminiscence functions in which eight separate reminiscence functions map onto three second-order factors which contribute significantly to measurement of an overarching reminiscence latent construct. We collected online responses from 411 adults 50+ years of age. Confirmatory factor analytic models were computed at three points of data collection over 16 months. Invariance analyses were next undertaken to simultaneously compare the measurement properties to assess within-person stability of reminiscence functions over time. The tripartite structure of reminiscence functions was replicated at each point of data collection. As hypothesised, self-positive and self-negative functions are consistent across points of data collection, whereas prosocial functions vary over time. The temporal stability of the self functions may be attributed to enduring characteristics of the individual such as personality traits and life attitudes, as well as their solitary nature. Previous research indicates that consistency of self-positive reminiscence functions has ensuing benefits for physical health and psychological well-being; the opposite is true for self-negative functions. The temporal variation of prosocial functions may be due to the varying availability of others to share memories and their responsiveness to the emotional context.


Asunto(s)
Emociones/fisiología , Memoria Episódica , Modelos Psicológicos , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Psicometría , Encuestas y Cuestionarios
8.
Aging Ment Health ; 21(6): 668-675, 2017 06.
Artículo en Inglés | MEDLINE | ID: mdl-26891338

RESUMEN

OBJECTIVES: Subjective well-being (SWB) has become an important concept in evaluating older adults' quality of life. The cognitive and emotional evaluations which are used to appraise it differ in structure, characteristics, and effects on life. The purpose of this study was to support hypotheses regarding expected Holocaust survivors-specific effects and cross-cultural differences on three indicators of SWB. METHOD: We recruited samples of 50 male and female Israeli Holocaust survivors, other older Israelis, and older Canadians (N = 300) for allowing us to distinguish survivors-specific effects from cross-national differences. State anxiety, depressive symptoms, and life-satisfaction were compared across groups of men and women. Where univariate differences were detected, post hoc comparisons were computed to determine which of the groups significantly differed. RESULTS: In general, a higher level of SWB was found among Canadians in comparison to both comparative Israeli groups. Level of depressive symptoms was significantly higher among women survivors than in the other two groups. Both groups of Israeli women had higher scores on anxiety than Canadian Women; less apparent were differences across groups of men. Life-satisfaction did not differ among the groups. CONCLUSIONS: Our findings regarding depression support the survivor-specific effect hypothesis for women, and a national effect on anxiety, but not any effect on life-satisfaction. These findings suggest significant differences in impacts of traumatic life events on cognitive versus emotional indicators of SWB. This issue should be further investigated due to its practical implications in use of various measures of SWB with people who experienced traumatic events.


Asunto(s)
Holocausto/psicología , Calidad de Vida , Factores Sexuales , Sobrevivientes/psicología , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Ansiedad/psicología , Canadá , Estudios de Casos y Controles , Depresión/psicología , Femenino , Humanos , Israel , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios
9.
J Environ Manage ; 168: 16-26, 2016 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-26692413

RESUMEN

Model studies were conducted to investigate the potential coral reef sediment exposure from dredging associated with proposed development of a deepwater wharf in Apra Harbor, Guam. The Particle Tracking Model (PTM) was applied to quantify the exposure of coral reefs to material suspended by the dredging operations at two alternative sites. Key PTM features include the flexible capability of continuous multiple releases of sediment parcels, control of parcel/substrate interaction, and the ability to efficiently track vast numbers of parcels. This flexibility has facilitated simulating the combined effects of sediment released from clamshell dredging and chiseling within Apra Harbor. Because the rate of material released into the water column by some of the processes is not well understood or known a priori, the modeling approach was to bracket parameters within reasonable ranges to produce a suite of potential results from multiple model runs. Sensitivity analysis to model parameters is used to select the appropriate parameter values for bracketing. Data analysis results include mapping the time series and the maximum values of sedimentation, suspended sediment concentration, and deposition rate. Data were used to quantify various exposure processes that affect coral species in Apra Harbor. The goal of this research is to develop a robust methodology for quantifying and bracketing exposure mechanisms to coral (or other receptors) from dredging operations. These exposure values were utilized in an ecological assessment to predict effects (coral reef impacts) from various dredging scenarios.


Asunto(s)
Arrecifes de Coral , Monitoreo del Ambiente , Sedimentos Geológicos , Contaminantes del Agua/efectos adversos , Animales , Guam , Modelos Teóricos
10.
J Environ Manage ; 168: 111-22, 2016 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-26704453

RESUMEN

Coral reefs are in decline worldwide due to anthropogenic stressors including reductions in water and substratum quality. Dredging results in the mobilization of sediments, which can stress and kill corals via increasing turbidity, tissue damage and burial. The Particle Tracking Model (PTM) was applied to predict the potential impacts of dredging-associated sediment exposure on the coral reef ecosystems of Apra Harbor, Guam. The data were interpreted using maps of bathymetry and coral abundance and distribution in conjunction with impact parameters of suspended sediment concentration (turbidity) and sedimentation using defined coral response thresholds. The results are presented using a "stoplight" model of negligible or limited impacts to coral reefs (green), moderate stress from which some corals would be expected to recover while others would not (yellow) and severe stress resulting in mortality (red). The red conditions for sediment deposition rate and suspended sediment concentration (SSC) were defined as values exceeding 25 mg cm(-2) d(-1) over any 30 day window and >20 mg/l for any 18 days in any 90 day period over a column of water greater than 2 m, respectively. The yellow conditions were defined as values >10 mg cm(-2) d(-1) and <25 mg cm(-2) d(-1) over any 30 day period, and as 20% of 3 months' concentration exceeding 10 mg/l for the deposition and SSC, respectively. The model also incorporates the potential for cumulative effects on the assumption that even sub-lethal stress levels can ultimately lead to mortality in a multi-stressor system. This modeling approach can be applied by resource managers and regulatory agencies to support management decisions related to planning, site selection, damage reduction, and compensatory mitigation.


Asunto(s)
Arrecifes de Coral , Monitoreo del Ambiente , Sedimentos Geológicos/análisis , Contaminantes del Agua/toxicidad , Animales , Ecosistema , Guam , Modelos Teóricos
11.
Risk Anal ; 34(4): 735-50, 2014 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-24117921

RESUMEN

The use of thimerosal preservative in childhood vaccines has been largely eliminated over the past decade in the United States because vaccines have been reformulated in single-dose vials that do not require preservative. An exception is the inactivated influenza vaccines, which are formulated in both multidose vials requiring preservative and preservative-free single-dose vials. As part of an ongoing evaluation by USFDA of the safety of biologics throughout their lifecycle, the infant body burden of mercury following scheduled exposures to thimerosal preservative in inactivated influenza vaccines in the United States was estimated and compared to the infant body burden of mercury following daily exposures to dietary methylmercury at the reference dose established by the USEPA. Body burdens were estimated using kinetic parameters derived from experiments conducted in infant monkeys that were exposed episodically to thimerosal or MeHg at identical doses. We found that the body burden of mercury (AUC) in infants (including low birth weight) over the first 4.5 years of life following yearly exposures to thimerosal was two orders of magnitude lower than that estimated for exposures to the lowest regulatory threshold for MeHg over the same time period. In addition, peak body burdens of mercury following episodic exposures to thimerosal in this worst-case analysis did not exceed the corresponding safe body burden of mercury from methylmercury at any time, even for low-birth-weight infants. Our pharmacokinetic analysis supports the acknowledged safety of thimerosal when used as a preservative at current levels in certain multidose infant vaccines in the United States.


Asunto(s)
Vacunas contra la Influenza/administración & dosificación , Mercurio/farmacocinética , Timerosal/administración & dosificación , Área Bajo la Curva , Carga Corporal (Radioterapia) , Humanos , Lactante , Vacunas contra la Influenza/química , Timerosal/análisis , Incertidumbre , Estados Unidos
12.
Health Secur ; 21(4): 310-318, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37294940

RESUMEN

The National Disaster Medical System (NDMS) Pilot Program was authorized by Congress to improve the interoperability, capabilities, and capacity of the NDMS. To develop a roadmap for planning and research, the mixed methods Military-Civilian NDMS Interoperability Study (MCNIS) was conducted in 2020-2021. The initial qualitative phase of the study identified critical themes for improvement: (1) coordination, collaboration, and communication; (2) funding and incentives to increase private sector preparedness; (3) staffing capacity and competencies; (4) clinical and support surge capacity; (5) training, education, and exercises between federal and private sector partners; and (6) metrics, benchmarks, and modeling to track NDMS performance. These qualitative findings were subsequently refined, validated, and prioritized through a quantitative survey. Expert respondents ranked 64 statements based on weaknesses and opportunities identified during the qualitative phase. Data were collected using Likert scales, and multivariate proportions and confidence intervals were estimated to compare and prioritize each statement's level of support. Pairwise tests were conducted for each item-to-item pair to determine statistically significant differences. The survey results corroborated the earlier qualitative findings, with all weaknesses and opportunities ranked as important by a majority of respondents. Survey results also pointed to specific priorities for interventions within the 6 previously identified themes. As with the qualitative study, the survey found that the most common weaknesses and opportunities were related to coordination, collaboration, and communication, especially regarding information technology and planning at the federal and regional levels. These priority interventions are now being developed, implemented, and validated at 5 pilot partner sites.


Asunto(s)
Planificación en Desastres , Desastres , Personal Militar , Humanos , Encuestas y Cuestionarios
13.
PLoS One ; 18(12): e0296054, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38153953

RESUMEN

BACKGROUND: The evidence for an increased incidence of sexually transmitted infections (STIs) among patients utilizing HIV pre-exposure prophylaxis (PrEP) has been inconsistent. We assessed the risk of incident STI while on PrEP compared to periods off PrEP among military service members starting PrEP. METHODS: Incidence rates of chlamydia, gonorrhea, syphilis, hepatitis C virus, and HIV were determined among military service members without HIV prescribed daily oral tenofovir disoproxil fumarate and emtricitabine for HIV PrEP from February 1, 2014 through June 10, 2016. Hazard ratios for incident STIs were calculated using an Anderson-Gill recurrent event proportional hazard regression model. RESULTS: Among 755 male service members, 477 (63%) were diagnosed with incident STIs (overall incidence 21.4 per 100 person-years). Male service members had a significantly lower risk of any STIs (adjusted hazard ratio (aHR) 0.21, 95% CI 0.11-0.40) while using PrEP compared to periods off PrEP after adjustment for socio-demographic characteristics, reasons for initiating PrEP, surveillance period prior to PrEP initiation, and the effect of PrEP on site and type of infection in multivariate analysis. However, when stratifying for anatomical site and type of infection, the risk of extragenital gonorrhea infection (pharyngeal NG: aHR 1.84, 95% CI 0.82-4.13, p = 0.30; rectal NG: aHR 1.23, 95% CI 0.60-2.51, p = 1.00) and extragenital CT infection (pharyngeal CT: aHR 2.30, 95% CI 0.46-11.46, p = 0.81; rectal CT: aHR 1.36, 95% CI 0.81-2.31, p = 0.66) was greater on PrEP compared to off PrEP although these values did not reach statistical significance. CONCLUSIONS: The data suggest entry into PrEP care reduced the overall risk of STIs following adjustment for anatomical site of STI and treatment. Service members engaged in PrEP services also receive more STI prevention counseling, which might contribute to decreases in STI risk while on PrEP.


Asunto(s)
Gonorrea , Infecciones por VIH , Personal Militar , Profilaxis Pre-Exposición , Minorías Sexuales y de Género , Enfermedades de Transmisión Sexual , Humanos , Masculino , Gonorrea/epidemiología , Gonorrea/prevención & control , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Homosexualidad Masculina , Enfermedades de Transmisión Sexual/epidemiología , Enfermedades de Transmisión Sexual/prevención & control
14.
Gastro Hep Adv ; 1(5): 844-852, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35765598

RESUMEN

Background and Aims: Recent evidence suggests that the gut is an additional target for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, whether SARS-CoV-2 spreads via gastrointestinal secretions remains unclear. To determine the prevalence of gastrointestinal SARS-CoV-2 infection in asymptomatic subjects, we analyzed gastrointestinal biopsy and liquid samples from endoscopy patients for the presence of SARS-CoV-2. Methods: We enrolled 100 endoscopic patients without known SARS-CoV-2 infection (cohort A) and 12 patients with a previous COVID-19 diagnosis (cohort B) in a cohort study performed at a regional hospital. Gastrointestinal biopsies and fluids were screened for SARS-CoV-2 by polymerase chain reaction (PCR), immunohistochemistry, and virus isolation assay, and the stability of SARS-CoV-2 in gastrointestinal liquids in vitro was analyzed. Results: SARS-CoV-2 ribonucleic acid was detected by PCR in the colonic tissue of 1/100 patients in cohort A. In cohort B, 3 colonic liquid samples tested positive for SARS-CoV-2 by PCR and viral nucleocapsid protein was detected in the epithelium of the respective biopsy samples. However, no infectious virions were recovered from any samples. In vitro exposure of SARS-CoV-2 to colonic liquid led to a 4-log-fold reduction of infectious SARS-CoV-2 within 1 hour (P ≤ .05). Conclusion: Overall, the persistent detection of SARS-CoV-2 in endoscopy samples after resolution of COVID-19 points to the gut as a long-term reservoir for SARS-CoV-2. Since no infectious virions were recovered and SARS-CoV-2 was rapidly inactivated in the presence of colon liquids, it is unlikely that performing endoscopic procedures is associated with a significant infection risk due to undiagnosed asymptomatic or persistent gastrointestinal SARS-CoV-2 infections.

15.
JMIR Form Res ; 5(9): e30472, 2021 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-34473069

RESUMEN

BACKGROUND: The World Health Organization ranks bipolar disorder (BD) as the 7th leading cause of disability. Although the effects on those with BD are well described, less is reported on the impact of BD on cohabiting partners or any interactions between the two; this requires in vivo data collection measured each day over several months. OBJECTIVE: We set out to demonstrate the utility of ecological momentary assessment with BD couples measured using yoked smartphone apps. When randomly prompted over time, we assumed distinct patterns of association would emerge between BD symptoms (both depression and hypo/mania) and partner mood (positive and negative affect). METHODS: For this pilot study, we recruited an international sample of young and older adults with BD and their cohabiting partners where available. Both participants and partners downloaded separate apps onto their respective smartphones. Within self-specified "windows of general availability," participants with BD were randomly prompted to briefly report symptoms of depression and hypo/mania (ie, BDSx), positive and negative mood (ie, POMS-15; partners), and any important events of the day (both). The partner app was yoked to the participant app so that the former was prompted roughly 30 minutes after the participant with BD or the next morning if outside the partner's specified availability. RESULTS: Four couples provided 312 matched BD symptom and partner mood responses over an average of 123 days (range 65-221 days). Both were GPS- and time-stamped (mean 3:11 hrs between questionnaires, SD 4:51 hrs). Total depression had a small but significant association with positive (r=-.14; P=.02) and negative partner affect (r=.15; P=.01]. Yet total hypo/mania appeared to have no association with positive partner affect (r=-.01; P=.87); instead, negative partner affect was significantly correlated with total hypo/mania (r=.26; P=.01). However, when we look specifically at BD factors, we see that negative partner affect is associated only with affrontive symptoms of hypo/mania (r=.38; P=.01); elation or loss of insight appears unrelated to either positive (r=.10; P=.09) or negative partner affect (r=.02; P=.71). Yet affrontive symptoms of hypo/mania were significantly correlated with negative affect, but only when couples were together (r=.41; P=.01), not when apart (r=.22; P=.12). That is, these angry interpersonal symptoms of hypo/mania appear to be experienced most negatively by spouses when couples are together. CONCLUSIONS: These initial findings demonstrate the utility of in vivo ambulatory data collection in longitudinal mental health research. Preliminary analyses suggest different BD symptoms are associated with negative and positive partner mood. These negative effects appear greater for hypo/mania than depressive symptoms, but proximity to the person with BD is important.

16.
Am J Clin Nutr ; 113(3): 517-524, 2021 03 11.
Artículo en Inglés | MEDLINE | ID: mdl-33515017

RESUMEN

The use of classic nonparametric tests (cNPTs), such as the Kruskal-Wallis and Mann-Whitney U tests, in the presence of unequal variance for between-group comparisons of means and medians may lead to marked increases in the rate of falsely rejecting null hypotheses and decreases in statistical power. Yet, this practice remains prevalent in the scientific literature, including nutrition and obesity literature. Some nutrition and obesity studies use a cNPT in the presence of unequal variance (i.e., heteroscedasticity), sometimes because of the mistaken rationale that the test corrects for heteroscedasticity. Herein, we discuss misconceptions of using cNPTs in the presence of heteroscedasticity. We then discuss assumptions, purposes, and limitations of 3 common tests used to test for mean differences between multiple groups, including 2 parametric tests: Fisher's ANOVA and Welch's ANOVA; and 1 cNPT: the Kruskal-Wallis test. To document the impact of heteroscedasticity on the validity of these tests under conditions similar to those used in nutrition and obesity research, we conducted simple simulations and assessed type I error rates (i.e., false positives, defined as incorrectly rejecting the null hypothesis). We demonstrate that type I error rates for Fisher's ANOVA, which does not account for heteroscedasticity, and Kruskal-Wallis, which tests for differences in distributions rather than means, deviated from the expected significance level. Greater deviation from the expected type I error rate was observed as the heterogeneity increased, especially in the presence of an imbalanced sample size. We provide brief tutorial guidance for authors, editors, and reviewers to identify appropriate statistical tests when test assumptions are violated, with a particular focus on cNPTs.


Asunto(s)
Interpretación Estadística de Datos , Ciencias de la Nutrición/estadística & datos numéricos , Obesidad/dietoterapia , Estadísticas no Paramétricas , Humanos , Reproducibilidad de los Resultados
18.
J Gerontol B Psychol Sci Soc Sci ; 73(3): 363-371, 2018 03 02.
Artículo en Inglés | MEDLINE | ID: mdl-26869547

RESUMEN

Objectives: This study was undertaken to examine bidirectional effects of well-being over time in long-wed couples. Method: We recruited 125 couples 50+ years of age who had been married 20+ years. Both spouses reported life satisfaction and depressive symptoms independently at three annual points over 2 years. We computed actor-partner interdependence models (APIMs) to identify concomitant and longitudinal bidirectional effects between long-wed spouses. Where parallel associations were found between models of life satisfaction and depressive symptoms, we undertook invariance analyses to compare the relative strength of associations. Results: We observed a significant association between wives' and their husbands' life satisfaction at baseline; a concomitant crossover effect was also evident from wives to husbands at 1- and 2-year follow-up, such that wives' life satisfaction predicted changes in their husbands' life satisfaction beyond that previously and concomitantly reported. Discussion: Our findings suggest that older wives influence their husbands after decades of marriage; the relative effect of this crossover on older husbands is comparatively equivalent for life satisfaction and depressive symptoms. These findings stand in contrast to prior research with younger couples suggesting that long-wed couples may be a distinct subset of the population of all married couples (i.e., those who have not divorced).


Asunto(s)
Depresión/epidemiología , Matrimonio/psicología , Satisfacción Personal , Anciano , Anciano de 80 o más Años , Depresión/etiología , Depresión/psicología , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Escalas de Valoración Psiquiátrica , Esposos/psicología , Esposos/estadística & datos numéricos , Encuestas y Cuestionarios , Factores de Tiempo
19.
J Occup Health Psychol ; 22(1): 71-85, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26866412

RESUMEN

Given evidence suggesting a detrimental effect of occupational stress on sleep, it is important to identify protective factors that may ameliorate this effect. We followed 87 paramedics upon waking and after work over 1 week using a daily diary methodology. Multilevel modeling was used to examine whether the detrimental effects of daily occupational stress on sleep quality were buffered by perceived social support availability. Paramedics who reported more support availability tended to report better quality sleep over the week. Additionally, perceived support availability buffered postworkday sleep from average occupational stress and days of especially high occupational stress. Perceived support availability also buffered off-workday sleep from the cumulative amount of occupational stress experienced over the previous workweek. Those with low levels of support displayed poor sleep quality in the face of high occupational stress; those high in support did not show significant effects of occupational stress on sleep. (PsycINFO Database Record


Asunto(s)
Técnicos Medios en Salud/psicología , Enfermedades Profesionales/psicología , Trastornos del Sueño-Vigilia/psicología , Apoyo Social , Estrés Psicológico/psicología , Adulto , Canadá/epidemiología , Femenino , Humanos , Estudios Longitudinales , Masculino , Registros Médicos , Persona de Mediana Edad , Análisis Multinivel , Enfermedades Profesionales/epidemiología , Trastornos del Sueño-Vigilia/epidemiología , Estrés Psicológico/epidemiología , Encuestas y Cuestionarios , Tolerancia al Trabajo Programado
20.
Gerontologist ; 57(6): 1158-1165, 2017 11 10.
Artículo en Inglés | MEDLINE | ID: mdl-27927727

RESUMEN

Purpose of the Study: The ability to integrate traumatic memories into a coherent life narrative is one factor associated with the mental health and well-being of Holocaust survivors. In the present study, reminiscences reported by survivors in Israel were collected to identify themes arising in positive and negative memories and experience. Design and Methods: Participants (M = 80.4 years; SD = 6.87) were asked to describe memories that typify a reminiscence function in which they frequently or very frequently engage. Open-ended responses were collected from 269 Holocaust survivors and thematic analyses were conducted in English (translated) and Hebrew. Results: Thematic analyses of these data suggest three overarching themes related to bridging the past and present, rebuilding families and the Jewish state, and the duty to share. These suggest how integral endurance, survival, and resilience were to participants during the war and how these themes defined their choices and understanding of their lives. Implications: The results of this study demonstrate how reminiscence serves many functions. Participants appear to have integrated memories of horror and loss as part of coherent life narratives. Resilience and memory are ongoing and intertwined processes whereby survivors juxtapose their early lives to the present.


Asunto(s)
Holocausto/psicología , Salud Mental , Recuerdo Mental , Resiliencia Psicológica , Sobrevivientes/psicología , Anciano , Anciano de 80 o más Años , Canadá , Estudios de Evaluación como Asunto , Femenino , Humanos , Israel , Acontecimientos que Cambian la Vida , Masculino , Memoria Episódica
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