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1.
Ophthalmic Res ; 67(1): 311-321, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38679018

RESUMEN

INTRODUCTION: Understanding patient perspectives of treatment may improve adherence and outcomes. This study explored real-world patient experiences with anti-vascular endothelial growth factor (anti-VEGF) treatment for diabetic macular edema (DME) and neovascular age-related macular degeneration (nAMD). METHODS: This multinational, non-interventional, quantitative, cross-sectional, observational survey assessed treatment barriers/burden, patient-reported visual functioning, and treatment satisfaction in DME and nAMD patients in the USA, the UK, Canada, France, Italy, and Spain. Treatment patterns and visual outcomes were extracted from medical charts. Regression models evaluated relationships between adherence, total missed visits, number of anti-VEGF injections, and clinical and patient-reported outcomes for visual functioning. Association between treatment satisfaction and aspects of burden were assessed. RESULTS: The survey was completed by 183 DME and 391 nAMD patients. Patients had moderately high vision-related functioning (25-item National Eye Institute Visual Functioning Questionnaire score: mean = 74.8) and were satisfied with their current treatment (mean total score: Macular Disease Treatment Satisfaction Questionnaire = 59.2; Retinopathy Treatment Satisfaction Questionnaire = 61.3). Treatment satisfaction scores were worse with higher time-related impacts of treatment (nAMD/DME), higher impacts on finances and daily life (nAMD), negative impacts on employment and lower expectations for treatment effectiveness (DME). Most patients reported ≥1 barrier (66.1% DME, 49.2% nAMD patients) related to treatment (35.0%), clinic (32.6%), and COVID-19 (21.1%). Moreover, 44.9% of patients reported some impairment in activities of daily living. Work absenteeism was observed among >60% of working patients. Nearly one-quarter (24.2%) of patients needed ≥1 day to recover from intravitreal injections; most reported ≥30 min of travel time (73.7%) and clinic wait time (54.2%). In unadjusted univariable analyses, treatment adherence (vs. nonadherence) was related to higher most recent visual acuity (ß = 8.98 letters; CI, 1.34-16.62) and lower odds of visual acuity below driving vision (≤69 letters) (OR = 0.50; CI, 0.25-1.00). CONCLUSION: More durable treatments with reduced frequency of injections/visits may reduce treatment burden and improve patient satisfaction, which may enhance adherence and visual outcomes.


Asunto(s)
Inhibidores de la Angiogénesis , Retinopatía Diabética , Inyecciones Intravítreas , Edema Macular , Satisfacción del Paciente , Factor A de Crecimiento Endotelial Vascular , Agudeza Visual , Degeneración Macular Húmeda , Humanos , Masculino , Inhibidores de la Angiogénesis/administración & dosificación , Inhibidores de la Angiogénesis/uso terapéutico , Femenino , Edema Macular/tratamiento farmacológico , Estudios Transversales , Anciano , Retinopatía Diabética/tratamiento farmacológico , Factor A de Crecimiento Endotelial Vascular/antagonistas & inhibidores , Degeneración Macular Húmeda/tratamiento farmacológico , Degeneración Macular Húmeda/fisiopatología , Encuestas y Cuestionarios , Ranibizumab/administración & dosificación , Persona de Mediana Edad , Anciano de 80 o más Años , Tomografía de Coherencia Óptica , Bevacizumab/administración & dosificación , Bevacizumab/uso terapéutico , Resultado del Tratamiento
2.
Int J Aging Hum Dev ; : 914150231219011, 2023 Dec 12.
Artículo en Inglés | MEDLINE | ID: mdl-38086748

RESUMEN

Age-related microaggressions are forms of ageist discrimination that occur in day-to-day interactions. This study aimed to validate the findings of a previous study, to identify common age-related microaggressions, and determine how affect influences emotional reactions to microaggressions. Using an online survey, participants (n = 200) were asked about their experience with age-related microaggressions, their affect, and their physical health. Participants were familiar with these microaggressions 53% of the time and had negative reactions to 43% of these microaggressions. The frequency of negative reactions to microaggressions was significantly correlated with scores of negative affect (r = .34, P < .001) and with ratings of perceived physical health (r = -.32, P = .002). The results of the study provide further insight into the topography of, and how older adults experience microaggressions. This information should be used as an educational tool to reduce the prevalence of ageism.

3.
PLoS Med ; 19(11): e1004107, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36355774

RESUMEN

BACKGROUND: Our understanding of the global scale of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection remains incomplete: Routine surveillance data underestimate infection and cannot infer on population immunity; there is a predominance of asymptomatic infections, and uneven access to diagnostics. We meta-analyzed SARS-CoV-2 seroprevalence studies, standardized to those described in the World Health Organization's Unity protocol (WHO Unity) for general population seroepidemiological studies, to estimate the extent of population infection and seropositivity to the virus 2 years into the pandemic. METHODS AND FINDINGS: We conducted a systematic review and meta-analysis, searching MEDLINE, Embase, Web of Science, preprints, and grey literature for SARS-CoV-2 seroprevalence published between January 1, 2020 and May 20, 2022. The review protocol is registered with PROSPERO (CRD42020183634). We included general population cross-sectional and cohort studies meeting an assay quality threshold (90% sensitivity, 97% specificity; exceptions for humanitarian settings). We excluded studies with an unclear or closed population sample frame. Eligible studies-those aligned with the WHO Unity protocol-were extracted and critically appraised in duplicate, with risk of bias evaluated using a modified Joanna Briggs Institute checklist. We meta-analyzed seroprevalence by country and month, pooling to estimate regional and global seroprevalence over time; compared seroprevalence from infection to confirmed cases to estimate underascertainment; meta-analyzed differences in seroprevalence between demographic subgroups such as age and sex; and identified national factors associated with seroprevalence using meta-regression. We identified 513 full texts reporting 965 distinct seroprevalence studies (41% low- and middle-income countries [LMICs]) sampling 5,346,069 participants between January 2020 and April 2022, including 459 low/moderate risk of bias studies with national/subnational scope in further analysis. By September 2021, global SARS-CoV-2 seroprevalence from infection or vaccination was 59.2%, 95% CI [56.1% to 62.2%]. Overall seroprevalence rose steeply in 2021 due to infection in some regions (e.g., 26.6% [24.6 to 28.8] to 86.7% [84.6% to 88.5%] in Africa in December 2021) and vaccination and infection in others (e.g., 9.6% [8.3% to 11.0%] in June 2020 to 95.9% [92.6% to 97.8%] in December 2021, in European high-income countries [HICs]). After the emergence of Omicron in March 2022, infection-induced seroprevalence rose to 47.9% [41.0% to 54.9%] in Europe HIC and 33.7% [31.6% to 36.0%] in Americas HIC. In 2021 Quarter Three (July to September), median seroprevalence to cumulative incidence ratios ranged from around 2:1 in the Americas and Europe HICs to over 100:1 in Africa (LMICs). Children 0 to 9 years and adults 60+ were at lower risk of seropositivity than adults 20 to 29 (p < 0.001 and p = 0.005, respectively). In a multivariable model using prevaccination data, stringent public health and social measures were associated with lower seroprevalence (p = 0.02). The main limitations of our methodology include that some estimates were driven by certain countries or populations being overrepresented. CONCLUSIONS: In this study, we observed that global seroprevalence has risen considerably over time and with regional variation; however, over one-third of the global population are seronegative to the SARS-CoV-2 virus. Our estimates of infections based on seroprevalence far exceed reported Coronavirus Disease 2019 (COVID-19) cases. Quality and standardized seroprevalence studies are essential to inform COVID-19 response, particularly in resource-limited regions.


Asunto(s)
COVID-19 , SARS-CoV-2 , Niño , Adulto , Humanos , COVID-19/epidemiología , Estudios Seroepidemiológicos , Estudios Transversales , Pandemias
4.
Genet Med ; 24(11): 2228-2239, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36053287

RESUMEN

PURPOSE: Effective approaches to communicate genomic information are needed to ensure equitable care. In a randomized controlled superiority trial, we tested a novel practice model that aims to make genetic counseling inclusive, by making the communication accessible, relational, and actionable (ARIA). METHODS: In total, 696 English- and Spanish-speaking patients aged 18 to 49 years, enriched for individuals from historically underserved backgrounds, were randomized in 1:1 ratio to ARIA or usual care. Primary outcomes were accuracy of recall, communication satisfaction, and perceived understanding. In total, 33 participants completed qualitative interviews. RESULTS: Recall and understanding were high for all participants. ARIA participants scored higher on the relationship scale of communication satisfaction (mean difference = 0.09, 95% CI = <0.01 to 0.17). Moderator analyses of communication satisfaction showed that those with lower health literacy reported less communication difficulty in ARIA and those using medical interpreters reported greater communication ease in ARIA. No significant difference was found on other primary and secondary outcomes. Qualitative data enhanced understanding of how and why ARIA can be effective. CONCLUSION: This study provides evidence that a genetic counseling intervention that focuses on specific communication skills to enhance relationship-building, patient engagement, and comprehension can be effective with all patients and may be especially valuable for patients of lower health literacy and Spanish-speakers who use a medical interpreter.


Asunto(s)
Comunicación , Asesoramiento Genético , Alfabetización en Salud , Humanos , Recolección de Datos , Asesoramiento Genético/métodos , Hispánicos o Latinos
5.
Hered Cancer Clin Pract ; 20(1): 22, 2022 Jun 10.
Artículo en Inglés | MEDLINE | ID: mdl-35689290

RESUMEN

BACKGROUND: Risk assessment for hereditary cancer syndromes is recommended in primary care, but family history is rarely collected in enough detail to facilitate risk assessment and referral - a roadblock that disproportionately impacts individuals with healthcare access barriers. We sought to qualitatively assess a literacy-adapted, electronic patient-facing family history tool developed for use in diverse, underserved patient populations recruited in the Cancer Health Assessments Reaching Many (CHARM) Study. METHODS: Interview participants were recruited from a subpopulation of CHARM participants who experienced barriers to tool use in terms of spending a longer time to complete the tool, having incomplete attempts, and/or providing inaccurate family history in comparison to a genetic counselor-collected standard. We conducted semi-structured interviews with participants about barriers and facilitators to tool use and overall tool acceptability; interviews were recorded and professionally transcribed. Transcripts were coded based on a codebook developed using inductive techniques, and coded excerpts were reviewed to identify overarching themes related to barriers and facilitators to family history self-assessment and acceptability of the study tool. RESULTS: Interviewees endorsed the tool as easy to navigate and understand. However, they described barriers related to family history information, literacy and language, and certain tool functions. Participants offered concrete, easy-to-implement solutions to each barrier. Despite experience barriers to use of the tool, most participants indicated that electronic family history self-assessment was acceptable or preferable in comparison to clinician-collected family history. CONCLUSIONS: Even for participants who experienced barriers to tool use, family history self-assessment was considered an acceptable alternative to clinician-collected family history. Barriers experienced could be overcome with minor adaptations to the current family history tool. TRIAL REGISTRATION: This study is a sub-study of the Cancer Health Assessments Reaching Many (CHARM) trial, ClinicalTrials.gov, NCT03426878. Registered 8 February 2018.

6.
Allergy ; 76(4): 1188-1198, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33258114

RESUMEN

BACKGROUND: An objective of the phase 3 HELP Study was to investigate the effect of lanadelumab on health-related quality of life (HRQoL) in patients with hereditary angioedema (HAE). METHODS: Patients with HAE-1/2 received either lanadelumab 150 mg every 4 weeks (q4wks; n = 28), 300 mg q4wks (n = 29), 300 mg every 2 weeks (q2wks; n = 27), or placebo (n = 41) for 26 weeks (days 0-182). The Angioedema Quality of Life Questionnaire (AE-QoL) was administered monthly, consisting of four domain (functioning, fatigue/mood, fears/shame, nutrition) and total scores. The generic EQ-5D-5L questionnaire was administered on days 0, 98, and 182. Comparisons were made between placebo and (a) all lanadelumab-treated patients and (b) individual lanadelumab groups for changes in scores (day 0-182) and proportions achieving the minimal clinically important difference (MCID, -6) in AE-QoL total score. RESULTS: Compared with the placebo group, the lanadelumab total group demonstrated significantly greater improvements in AE-QoL total and domain scores (mean change, -13.0 to -29.3; p < 0.05 for all); the largest improvement was in functioning. A significantly greater proportion of the lanadelumab total group achieved the MCID (70% vs 37%; p = 0.001). The lanadelumab 300 mg q2wks group had the highest proportion (81%; p = 0.001) and was 7.2 times more likely to achieve the MCID than the placebo group. Mean EQ-5D-5L scores at day 0 were high in all groups, indicating low impairment, with no significant changes at day 182. CONCLUSION: Patients with HAE-1/2 experienced significant and clinically meaningful improvements in HRQoL measured by AE-QoL following lanadelumab treatment in the HELP Study.


Asunto(s)
Angioedemas Hereditarios , Calidad de Vida , Angioedemas Hereditarios/tratamiento farmacológico , Anticuerpos Monoclonales Humanizados , Humanos , Encuestas y Cuestionarios
7.
FASEB J ; 33(12): 13660-13668, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31593636

RESUMEN

Olfactomedin-4 (OLFM4) identifies a subset of neutrophils conserved in both mouse and man, associated with worse outcomes in several inflammatory conditions. We investigated the role of OLFM4-positive neutrophils in murine intestinal ischemia/reperfusion (IR) injury. Wild-type (WT) C57Bl/6 and OLFM4 null mice were subjected to intestinal IR injury and then monitored for survival or tissues harvested for further analyses. In vivo intestinal barrier function was determined via functional assay of permeability to FITC-dextran. OLFM4 null mice had a significant 7-d survival benefit and less intestinal barrier dysfunction compared with WT. Early after IR, WT mice had worse mucosal damage on histologic examination. Experiments involving adoptive transfer of bone marrow demonstrated that the mortality phenotype associated with OLFM4-positive neutrophils was transferrable to OLFM4 null mice. After IR injury, WT mice also had increased intestinal tissue activation of NFκB and expression of iNOS, 2 signaling pathways previously demonstrated to be involved in intestinal IR injury. In combination, these experiments show that OLFM4-positive neutrophils are centrally involved in the pathologic pathway leading to intestinal damage and mortality after IR injury. This may provide a therapeutic target for mitigation of intestinal IR injury in a variety of common clinical situations.-Levinsky, N. C., Mallela, J., Opoka, A., Harmon, K., Lewis, H. V., Zingarelli, B., Wong, H. R., Alder, M. N. The olfactomedin-4 positive neutrophil has a role in murine intestinal ischemia/reperfusion injury.


Asunto(s)
Glicoproteínas/fisiología , Intestinos/patología , Neutrófilos/patología , Daño por Reperfusión/etiología , Animales , Apoptosis , Femenino , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , FN-kappa B/metabolismo , Óxido Nítrico Sintasa de Tipo II/metabolismo , Daño por Reperfusión/metabolismo , Daño por Reperfusión/patología , Transducción de Señal
8.
J Med Ethics ; 2020 Oct 06.
Artículo en Inglés | MEDLINE | ID: mdl-33023975

RESUMEN

The ethical principle of 'respect for persons' in clinical research has traditionally focused on protecting individuals' autonomy rights, but respect for participants also includes broader, although less well understood, ethical obligations to regard individuals' rights, needs, interests and feelings. However, there is little empirical evidence about how to effectively convey respect to potential and current participants. To fill this gap, we conducted exploratory, qualitative interviews with participants in a clinical genomics implementation study. We interviewed 40 participants in English (n=30) or Spanish (n=10) about their experiences with respect in the study and perceptions of how researchers in a hypothetical observational study could convey respect or a lack thereof. Most interviewees were female (93%), identified as Hispanic/Latino(a) (43%) or non-Hispanic white (38%), reported annual household income under US$60 000 (70%) and did not have a Bachelor's degree (65%); 30% had limited health literacy. We identified four key domains for demonstrating respect: (1) personal study team interactions, with an emphasis on empathy, appreciation and non-judgment; (2) study communication processes, including following up and sharing results with participants; (3) inclusion, particularly ensuring materials are understandable and procedures are accessible; and (4) consent and authorisation, including providing a neutral informed consent and keeping promises regarding privacy protections. While the experience of respect is inherently subjective, these findings highlight four key domains that may meaningfully demonstrate respect to potential and current research participants. Further empirical and normative work is needed to substantiate these domains and evaluate how best to incorporate them into the practice of research.

12.
Euro Surveill ; 22(45)2017 11.
Artículo en Inglés | MEDLINE | ID: mdl-29162205

RESUMEN

When an increased number of acute gastroenteritis (AG) cases is detected among tourists staying at the same accommodation, outbreak management plans must be activated in a timely manner to prevent large outbreaks. Syndromic surveillance data collected between 1 January 2010 and 31 December 2013 by five seagoing cruise ships were analysed to identify attack rate thresholds for early outbreak detection. The overall incidence rate of AG was 2.81 cases per 10,000 traveller-days (95% confidence interval (CI): 0.00-17.60), while the attack rate was 19.37 cases per 10,000 travellers (95% CI: 0.00-127.69). The probability of an outbreak occurring was 11% if 4 per 1,000 passengers reported symptoms within the first 2 days of the voyage, and this increased to 23 % if 5 per 1,000 passengers reported such within the first 3 days. The risk ratio (RR) for outbreak occurrence was 2.35, 5.66 and 8.63 for 1, 2 and 3 days' delay of symptoms reporting respectively, suggesting a dose-response relationship. Shipping companies' policies and health authorities' efforts may consider these thresholds for initiating outbreak response measures based on the number of cases according to day of cruise. Efforts should focus on ensuring travellers report symptoms immediately and comply with isolation measures.


Asunto(s)
Diarrea/epidemiología , Brotes de Enfermedades/prevención & control , Gastroenteritis/epidemiología , Vigilancia de Guardia , Navíos , Viaje , Adulto , Diarrea/etiología , Notificación de Enfermedades , Diagnóstico Precoz , Femenino , Gastroenteritis/diagnóstico , Humanos , Incidencia , Persona de Mediana Edad , Navíos/estadística & datos numéricos , Viaje/estadística & datos numéricos
13.
Exp Physiol ; 101(2): 282-94, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26585840

RESUMEN

NEW FINDINGS: What is the central question of this study? Rate-pressure product (RPP) is commonly used as an index of cardiac 'effort'. In canine and human hearts (which have a positive force-frequency relationship), RPP is linearly correlated with oxygen consumption and has therefore been widely adopted as a species-independent index of cardiac work. However, given that isolated rodent hearts demonstrate a negative force-frequency relationship, its use in this model requires validation. What is the main finding and its importance? Despite its widespread use, RPP is not correlated with oxygen consumption (or cardiac 'effort') in the Langendorff-perfused isolated rat heart. This lack of correlation was also evident when perfusions included a range of metabolic substrates, insulin or ß-adrenoceptor stimulation. Langendorff perfusion of hearts isolated from rats and mice has been used extensively for physiological, pharmacological and biochemical studies. The ability to phenotype these hearts reliably is, therefore, essential. One of the commonly used indices of function is rate-pressure product (RPP); a rather ill-defined index of 'work' or, more correctly, 'effort'. Rate-pressure product, as originally described in dog or human hearts, was shown to be correlated with myocardial oxygen consumption (MV̇O2). Despite its widespread use, the application of this index to rat or mouse hearts (which, unlike the dog or human, have a negative force-frequency relationship) has not been characterized. The aim of this study was to examine the relationship between RPP and MV̇O2 in Langendorff-perfused rat hearts. Paced hearts (300-750 beats min(-1)) were perfused either with Krebs-Henseleit (KH) buffer (11 mm glucose) or with buffer supplemented with metabolic substrates and insulin. The arteriovenous oxygen consumption (MV̇O2) was recorded. Metabolic status was assessed using (31) P magnetic resonance spectroscopy and lactate efflux. Experiments were repeated in the presence of isoprenaline and in unpaced hearts where heart rate was increased by cumulative isoprenaline challenge. In KH buffer-perfused hearts, MV̇O2 increased with increasing heart rate, but given that left ventricular developed pressure decreased with increases in rate, RPP was not correlated with MV̇O2, lactate production or phosphocreatine/ATP ratio. Although the provision of substrates or ß-adrenoceptor stimulation changed the shape of the RPP-MV̇O2 relationship, neither intervention resulted in a positive correlation between RPP and oxygen consumption. Rate-pressure product is therefore an unreliable index of oxygen consumption or 'cardiac effort' in the isolated rat heart.


Asunto(s)
Corazón/fisiología , Consumo de Oxígeno/fisiología , Oxígeno/metabolismo , Animales , Frecuencia Cardíaca/fisiología , Preparación de Corazón Aislado/métodos , Ácido Láctico/metabolismo , Masculino , Miocardio/metabolismo , Perfusión/métodos , Fosfocreatina/metabolismo , Presión , Ratas , Ratas Wistar , Receptores Adrenérgicos beta/metabolismo
15.
Diabetologia ; 58(9): 2003-12, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26071759

RESUMEN

AIMS/HYPOTHESIS: Gestational diabetes mellitus (GDM) is associated with increased risks to mother and child, but globally agreed diagnostic criteria remain elusive. Identification of women with GDM is important, as treatment reduces adverse outcomes such as perinatal death, shoulder dystocia and neonatal hypoglycaemia. Recently, the UK's National Institute for Health and Care Excellence (NICE) recommended new diagnostic thresholds for GDM which are different from the International Association of the Diabetes and Pregnancy Study Groups (IADPSG) criteria endorsed by the WHO. The study aim was to assess neonatal and obstetric outcomes among women who would test positive for the IADPSG criteria but negative for the NICE 2015 criteria. METHODS: Data from 25,543 consecutive singleton live births (2004-2008) were obtained retrospectively from hospital records. Women were screened with a random plasma glucose (RPG; 12-16 weeks) and a 50 g glucose challenge test (GCT; 26-28 weeks). If RPG >7.0 mmol/l, GCT >7.7 mmol/l or symptoms were present, a 75 g OGTT was offered (n = 3,848). RESULTS: In this study, GDM prevalence was 4.13% (NICE 2015) and 4.62% (IADPSG). Women who 'fell through the net', testing NICE-negative but IADPSG-positive (n = 387), had a higher risk of having a large-for-gestational-age (LGA) infant (birthweight >90th percentile for gestational age; adjusted OR [95% CI] 3.12 [2.44, 3.98]), Caesarean delivery (1.44 [1.15, 1.81]) and polyhydramnios (6.90 [3.94, 12.08]) compared with women with negative screening results and no OGTT (n = 21,695). LGA risk was highest among women with fasting plasma glucose 5.1-5.5 mmol/l (n = 167): the mean birthweight was 350 g above that of the reference population and 37.7% of infants were LGA. CONCLUSIONS/INTERPRETATION: The IADPSG criteria identify women at substantial risk of complications who would not be identified by the NICE 2015 criteria.


Asunto(s)
Diabetes Gestacional/diagnóstico , Adulto , Peso al Nacer , Glucemia/análisis , Cesárea , Femenino , Macrosomía Fetal/diagnóstico , Prueba de Tolerancia a la Glucosa , Humanos , Recién Nacido , Obstetricia/métodos , Oportunidad Relativa , Embarazo , Resultado del Embarazo , Prevalencia , Estudios Retrospectivos
16.
Cochrane Database Syst Rev ; (9): CD011045, 2015 Sep 14.
Artículo en Inglés | MEDLINE | ID: mdl-26368271

RESUMEN

BACKGROUND: Overeating and harmful alcohol and tobacco use have been linked to the aetiology of various non-communicable diseases, which are among the leading global causes of morbidity and premature mortality. As people are repeatedly exposed to varying sizes and shapes of food, alcohol and tobacco products in environments such as shops, restaurants, bars and homes, this has stimulated public health policy interest in product size and shape as potential targets for intervention. OBJECTIVES: 1) To assess the effects of interventions involving exposure to different sizes or sets of physical dimensions of a portion, package, individual unit or item of tableware on unregulated selection or consumption of food, alcohol or tobacco products in adults and children.2) To assess the extent to which these effects may be modified by study, intervention and participant characteristics. SEARCH METHODS: We searched CENTRAL, MEDLINE, EMBASE, PsycINFO, eight other published or grey literature databases, trial registries and key websites up to November 2012, followed by citation searches and contacts with study authors. This original search identified eligible studies published up to July 2013, which are fully incorporated into the review. We conducted an updated search up to 30 January 2015 but further eligible studies are not yet fully incorporated due to their minimal potential to change the conclusions. SELECTION CRITERIA: Randomised controlled trials with between-subjects (parallel-group) or within-subjects (cross-over) designs, conducted in laboratory or field settings, in adults or children. Eligible studies compared at least two groups of participants, each exposed to a different size or shape of a portion of a food (including non-alcoholic beverages), alcohol or tobacco product, its package or individual unit size, or of an item of tableware used to consume it, and included a measure of unregulated selection or consumption of food, alcohol or tobacco. DATA COLLECTION AND ANALYSIS: We applied standard Cochrane methods to select eligible studies for inclusion and to collect data and assess risk of bias. We calculated study-level effect sizes as standardised mean differences (SMDs) between comparison groups, measured as quantities selected or consumed. We combined these results using random-effects meta-analysis models to estimate summary effect sizes (SMDs with 95% confidence intervals (CIs)) for each outcome for size and shape comparisons. We rated the overall quality of evidence using the GRADE system. Finally, we used meta-regression analysis to investigate statistical associations between summary effect sizes and variant study, intervention or participant characteristics. MAIN RESULTS: The current version of this review includes 72 studies, published between 1978 and July 2013, assessed as being at overall unclear or high risk of bias with respect to selection and consumption outcomes. Ninety-six per cent of included studies (69/72) manipulated food products and 4% (3/72) manipulated cigarettes. No included studies manipulated alcohol products. Forty-nine per cent (35/72) manipulated portion size, 14% (10/72) package size and 21% (15/72) tableware size or shape. More studies investigated effects among adults (76% (55/72)) than children and all studies were conducted in high-income countries - predominantly in the USA (81% (58/72)). Sources of funding were reported for the majority of studies, with no evidence of funding by agencies with possible commercial interests in their results.A meta-analysis of 86 independent comparisons from 58 studies (6603 participants) found a small to moderate effect of portion, package, individual unit or tableware size on consumption of food (SMD 0.38, 95% CI 0.29 to 0.46), providing moderate quality evidence that exposure to larger sizes increased quantities of food consumed among children (SMD 0.21, 95% CI 0.10 to 0.31) and adults (SMD 0.46, 95% CI 0.40 to 0.52). The size of this effect suggests that, if sustained reductions in exposure to larger-sized food portions, packages and tableware could be achieved across the whole diet, this could reduce average daily energy consumed from food by between 144 and 228 kcal (8.5% to 13.5% from a baseline of 1689 kcal) among UK children and adults. A meta-analysis of six independent comparisons from three studies (108 participants) found low quality evidence for no difference in the effect of cigarette length on consumption (SMD 0.25, 95% CI -0.14 to 0.65).One included study (50 participants) estimated a large effect on consumption of exposure to differently shaped tableware (SMD 1.17, 95% CI 0.57 to 1.78), rated as very low quality evidence that exposure to shorter, wider bottles (versus taller, narrower bottles) increased quantities of water consumed by young adult participants.A meta-analysis of 13 independent comparisons from 10 studies (1164 participants) found a small to moderate effect of portion or tableware size on selection of food (SMD 0.42, 95% CI 0.24 to 0.59), rated as moderate quality evidence that exposure to larger sizes increased the quantities of food people selected for subsequent consumption. This effect was present among adults (SMD 0.55, 95% CI 0.35 to 0.75) but not children (SMD 0.14, 95% CI -0.06 to 0.34).In addition, a meta-analysis of three independent comparisons from three studies (232 participants) found a very large effect of exposure to differently shaped tableware on selection of non-alcoholic beverages (SMD 1.47, 95% CI 0.52 to 2.43), rated as low quality evidence that exposure to shorter, wider (versus taller, narrower) glasses or bottles increased the quantities selected for subsequent consumption among adults (SMD 2.31, 95% CI 1.79 to 2.83) and children (SMD 1.03, 95% CI 0.41 to 1.65). AUTHORS' CONCLUSIONS: This review found that people consistently consume more food and drink when offered larger-sized portions, packages or tableware than when offered smaller-sized versions. This suggests that policies and practices that successfully reduce the size, availability and appeal of larger-sized portions, packages, individual units and tableware can contribute to meaningful reductions in the quantities of food (including non-alcoholic beverages) people select and consume in the immediate and short term. However, it is uncertain whether reducing portions at the smaller end of the size range can be as effective in reducing food consumption as reductions at the larger end of the range. We are unable to highlight clear implications for tobacco or alcohol policy due to identified gaps in the current evidence base.


Asunto(s)
Consumo de Bebidas Alcohólicas , Utensilios de Comida y Culinaria/normas , Ingestión de Alimentos , Preferencias Alimentarias , Tamaño de la Porción/normas , Embalaje de Productos/normas , Fumar , Adulto , Bebidas/estadística & datos numéricos , Niño , Conducta de Ingestión de Líquido , Humanos , Ensayos Clínicos Controlados Aleatorios como Asunto
19.
Arch Sex Behav ; 43(7): 1373-8, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-24696388

RESUMEN

Women's ability to reproduce is restricted by menarche and menopause. First children are, however, not typically born until some years after the onset of puberty. Other factors therefore contribute towards this delay. In this context, women's hips do not reach full adult form until they are in their mid-20s. Therefore, physiological and morphological factors appear to determine an optimum age-range for reproduction. The following studies were conducted in order to investigate this hypothesis. Study 1 asked nulliparous women questions about ages at which particular life events related to reproduction should ideally occur. This revealed their preferred age at birth of first child to be approximately 27 years old. Study 2 replicated these findings and further showed that women with children actually had their first child at a very similar age (27.93 [±0.79]). Findings from Study 3 were also remarkably consistent (28.15 [±0.39]). Study 4 examined the 1901 U.K. Census record and incorporated an analysis of the influence of wealth. Middle class women were on average 24.88 (±0.22) years old at the birth of their first child. Poor women were on average 23.50 (±0.20) years old. These figures at least approximate to findings from Studies 1-3, which is noteworthy given that modern contraceptive methods were not widely available at the time. It is concluded that female strategies to delay giving birth to their first child until they are of an age that approaches or coincides with their full hip maturation are enduring across time.


Asunto(s)
Edad Materna , Madres/estadística & datos numéricos , Embarazo/estadística & datos numéricos , Adolescente , Adulto , Femenino , Humanos , Persona de Mediana Edad , Paridad , Factores Socioeconómicos , Adulto Joven
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