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Critical feminist research addresses social inequities, encourages equitable partnerships between researchers and participants, and acknowledges that research can be inherently political. Building upon critical feminist research practices, community-based participatory research, and social and structural epidemiology, we propose the approach of critical feminist epidemiology. A critical feminist epidemiology approach can study community and population health inequities with an eye towards identifying interventions that reduce inequities, through research processes that center the lived experiences of people from minoritized genders. We describe how our interdisciplinary, community-led team used a critical feminist epidemiology approach for an applied public health research project. Mujeres Unidas y Activas, a community organizing non-profit led by and for Latina and Indigenous immigrant women, partnered with academic researchers to conduct community-led research around how their approach to building community power affected the health and wellbeing of organization members and their families. Critical feminist epidemiology is a promising approach for conducting research that is grounded in and relevant to the lives of women and gender expansive people. Building upon social epidemiology and community-based participatory research, critical feminist epidemiology can be a useful research approach to generate novel evidence to inform action towards health equity for communities and populations.
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BACKGROUND: Even though considered as studies with high methodological power, many RCTs in paediatric dentistry do not have essential quality items in their design, development, and report, making results' reliability questionable, replication challenging to conduct, wasting time, money, and efforts, and even exposing the participants to research for no benefit. AIM: We addressed the main topics related to transparency in clinical research, with an emphasis in paediatric dentistry. DESIGN: We searched for all controlled clinical trials published from January 2019 up to July 2020 in the three paediatric dentistry journals with high journal Impact Factor, indexed on Medline. These papers were assessed for transparency according to Open Science practices and regarding reporting accuracy using some items required by CONSORT. RESULTS: 53.6% of the studies declared registration, 75% had sample size calculation, 98.2% reported randomisation, and from those, 65.4% explained the randomisation method. Besides that, no study shared their data, and 6.8% were published in open access format. CONCLUSIONS: Unfortunately, a large proportion of RCTs in paediatric dental research show a lack of transparency and reproducibility.
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Investigación Dental , Informe de Investigación , Niño , Humanos , Factor de Impacto de la Revista , Publicaciones , Ensayos Clínicos Controlados Aleatorios como Asunto , Reproducibilidad de los Resultados , Proyectos de InvestigaciónRESUMEN
BACKGROUND: A 6 s spirometry with an inexpensive pocket spirometer efficiently selects individuals for a diagnostic-quality spirometry for airflow limitation, but could also be useful to identify individuals with a restrictive pattern. OBJECTIVES: We evaluated an inexpensive simplified spirometer (chronic obstructive pulmonary disease [COPD]-6) as a screening tool to identify spirometric abnormalities. METHODS: A population-based survey in Mexico City, with 742 participants performing pre- and post-BD spirometry and a three-maneuver 6 s spirometry (pre-BD) with a COPD-6. We evaluated forced expiratory volume in 1 s (FEV1), FEV6, and FEV1/FEV6 from the COPD-6, crude and expressed as the percentage of predicted (%P), to discriminate post-bronchodilator airflow obstruction (FEV1/forced vital capacity [FVC] < 5th percentile) or restriction (FVC or FEV1 <5th percentile with normal FEV1/FVC) through receiver operating characteristics and their area under the curve (AUC). RESULTS: FEV1%P was the best predictor to identify pre- and post-BD ventilatory abnormalities (best cutoff point 87%P, AUC 92% for restrictive pattern, 89% for obstructive pattern, and 91% for any spirometric abnormality). Deriving to clinical spirometry only those with < 87%P (26% of the sample) missed only 12% of spirometric abnormalities most of the latter mild. CONCLUSIONS: An FEV1 < 87%P from a pre-BD 6 s spirometry correctly identified individuals with spirometric ventilatory defects, either obstructive or restrictive.
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Tamizaje Masivo/métodos , Enfermedad Pulmonar Obstructiva Crónica/diagnóstico , Espirometría , Adulto , Volumen Espiratorio Forzado , Humanos , México , Persona de Mediana Edad , Enfermedad Pulmonar Obstructiva Crónica/fisiopatología , Capacidad VitalRESUMEN
This study aimed to assess the color stability of two composite resins, unprotected or protected with a hydrosoluble gel (oxygen inhibitor) during final polymerization, when subjected to different staining solutions and daily tooth brushing simulation. Nanohybrid composite (IPS Empress Direct) or nanofilled composite (Filtek Z350) were used to produce round samples that were either unprotected or protected with a hydrosoluble gel before the final cycle of polymerization. For 5 days, the samples were immersed for 1 h/day in four different staining solutions: distilled water (control), coffee, soft drink, and red wine. Once a day, the samples were also subjected to mechanical brushing with soft-bristled brushes for 30 min. The combination of experimental conditions produced 16 groups (n = 10). Color changes (ΔE) were evaluated at baseline and after mechanical brushing cycles for 1, 3, and 5 days. Data were analyzed by linear regression models. Protection with hydrosoluble gel was able to significantly reduce the color change only on the first day (p = 0.001). The type of composite resin did not significantly affect the color change over the days. Wine affected composite resin color change only on the first day (p = 0.002). Over time, color stability of composite resins did not improve with the protection of a hydrosoluble gel before the final polymerization.
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Resinas Compuestas , Estética Dental , Café , Color , Ensayo de Materiales , Polimerizacion , Coloración y Etiquetado , Propiedades de SuperficieRESUMEN
OBJECTIVE: To describe the studies that have reported association measures between risk of cancer and the percentage distribution of urinary inorganic arsenic (iAs) metabolites by anatomical site, in non-ecological epidemiological studies. METHODS: Studies were identified in the PubMed database in the period from 1990 to 2015. Inclusion criteria were: non-ecological epidemiological study, with histologically confirmed cancer cases, reporting the percentage distribution of inorganic arsenic (iAs), monomethylated (MMA) and dimethylated (DMA) metabolites, as well as association measures with confidence intervals (CI) between cancer and %iAs and/or %MMA and/or %DMA. A descriptive meta-analysis was performed by the method of the inverse of the variance for the fixed effects model and the DerSimonian and Laird's method for the random effects model. Heterogeneity was tested using the Q statistic and stratifying for epidemiological design and total As in urine. The possibility of publication bias was assessed through Begg's test. RESULTS: A total of 13 eligible studies were found, most of them were performed in Taiwan and focused on skin and bladder cancer. The positive association between %MMA and various types of cancer was consistent, in contrast to the negative relationship between %DMA and cancer that was inconsistent. The summary risk of bladder (OR=1.79; 95% CI: 1.42, 2.26, n=4 studies) and lung (OR=2.44; 95% CI: 1.57, 3.80, n=2 studies) cancer increased significantly with increasing %MMA, without statistical heterogeneity. In contrast, lung cancer risk was inversely related to %DMA (OR=0.58; 95% CI: 0.36, 0.93, n=2 studies), also without significant heterogeneity. These results were similar after stratifying by epidemiological design and total As in urine. No evidence of publication bias was found. CONCLUSION: These findings provide additional support that methylation needs to be taken into account when assessing the potential iAs carcinogenicity risk.
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Arsénico/metabolismo , Contaminantes Ambientales/metabolismo , Neoplasias/epidemiología , Arsénico/orina , Contaminantes Ambientales/orina , Humanos , Metilación , Oportunidad Relativa , RiesgoRESUMEN
Recent studies demonstrate that cardiac glycosides, known to inhibit Na+/K+-ATPase in humans, have increased susceptibility to cancer cells that can be used in tumor therapy. One of the most promising candidates identified so far is glucoevatromonoside, which can be isolated from the endangered species Digitalis mariana ssp. heywoodii. Due to its complex structure, glucoevatromonoside cannot be obtained economically by total chemical synthesis. Here we describe two methods for glucoevatromonoside production, both using evatromonoside obtained by chemical degradation of digitoxin as the precursor. 1) Catalyst-controlled, regioselective glycosylation of evatromonoside to glucoevatromonoside using 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide as the sugar donor and 2-aminoethyldiphenylborinate as the catalyst resulted in an overall 30â% yield. 2) Biotransformation of evatromonoside using Digitalis lanata plant cell suspension cultures was less efficient and resulted only in overall 18â% pure product. Structural proof of products has been provided by extensive NMR data. Glucoevatromonoside and its non-natural 1-3 linked isomer neo-glucoevatromonoside obtained by semisynthesis were evaluated against renal cell carcinoma and prostate cancer cell lines.
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Antineoplásicos/metabolismo , Cardenólidos/metabolismo , Glicósidos Cardíacos/metabolismo , Digitalis/metabolismo , Digitoxina/química , ATPasa Intercambiadora de Sodio-Potasio/antagonistas & inhibidores , Antineoplásicos/química , Antineoplásicos/aislamiento & purificación , Antineoplásicos/farmacología , Biotransformación , Cardenólidos/síntesis química , Cardenólidos/aislamiento & purificación , Cardenólidos/farmacología , Glicósidos Cardíacos/síntesis química , Glicósidos Cardíacos/aislamiento & purificación , Glicósidos Cardíacos/farmacología , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Células Cultivadas , Digitalis/química , Digitoxina/aislamiento & purificación , Inhibidores Enzimáticos/química , Inhibidores Enzimáticos/aislamiento & purificación , Inhibidores Enzimáticos/metabolismo , Glicosilación , Humanos , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación , ATPasa Intercambiadora de Sodio-Potasio/metabolismoRESUMEN
BACKGROUND: Microbial translocation (MT) is a shared feature of HIV infection and inflammatory bowel disease (IBD). AIMS: This study was conducted to assess the impact of IBD (and particularly ulcerative colitis, UC) on plasma markers of MT and immune activation in HIV+ subjects. METHODS: A cross-sectional study was conducted in 3 groups of patients: HIV+/UC+(group HIV/UC); HIV+/UC- (group HIV); HIV-/UC+(group UC). Plasma levels of soluble CD14 (sCD14), intestinal fatty acid-binding protein (I-FABP), and endotoxin core antibodies (endoCAB) were measured as plasma markers of MT. Inflammation and immune activation were evaluated by measuring plasma levels of IL-6, IL-21, TNF-alpha, and high-sensitivity C-reactive protein (hs-CRP). T- and B-cells subpopulations were characterized by FACS analysis. RESULTS: Seven patients were enrolled in group HIV/UC, 9 in HIV, and 10 in UC. All HIV-positive patients had plasma values of HIV-1 RNA<37 copies/mL for at least 12 months and good immunological recovery. All patients with UC were treated with oral mesalazine. Markers of MT, immune activation, and inflammation were not increased in subjects with HIV/UC. In fact, they had lower levels of I-FABP (p=0.001) and sCD14 (p=0.007) when compared to other patients groups. Positive correlations were found between I-FABP and sCD14 (r=.355, p=0.076). Frequency of T- and B-cell subsets did not differ among groups. CONCLUSIONS: Our results suggest that UC does not worsen MT, inflammation, or immune activation in HIV-infected subjects. The anti-inflammatory activity of chronic mesalazine administration on intestinal mucosa may contribute to this finding.
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Antiinflamatorios no Esteroideos/administración & dosificación , Colitis Ulcerosa/tratamiento farmacológico , Proteínas de Unión a Ácidos Grasos/sangre , Infecciones por VIH/complicaciones , Receptores de Lipopolisacáridos/sangre , Mesalamina/administración & dosificación , Adulto , Biomarcadores/sangre , Colitis Ulcerosa/sangre , Colitis Ulcerosa/etiología , Estudios Transversales , Femenino , Humanos , Interleucina-6/sangre , Interleucinas/sangre , Masculino , Persona de Mediana EdadRESUMEN
INTRODUCTION: Concentrations of inorganic arsenic (iAs) metabolites in urine present intra- and interindividual variations, which are determined not only by the magnitude of exposure to iAs, but also by differences in genetic, environmental and dietary factors. OBJECTIVE: To evaluate whether differences in dietary intake of selected micronutrients are associated with the metabolism of iAs. METHODS: The intake of 21 micronutrients was estimated for 1027 women living in northern Mexico using a food frequency questionnaire. Concentration of urinary metabolites of iAs was determined by high performance liquid chromatography inductively coupled plasma mass spectrometry (HPLC-ICP-MS) and the proportion of iAs metabolites was calculated (%iAs, monomethylarsonic acid [%MMA] and dimethylarsinic acid [%DMA]), as well as ratios corresponding to the first (MMA/iAs), second (DMA/MMA) and total methylation (DMA/iAs). RESULTS: After adjustment for covariates, it was found that methionine, choline, folate, vitamin B12, Zn, Se and vitamin C favor elimination of iAs mainly by decreasing the %MMA and/or increasing %DMA in urine. CONCLUSIONS: Our results confirm that diet contributes to the efficiency of iAs elimination. Further studies are needed to assess the feasibility of dietary interventions that modulate the metabolism of iAs and the consequent risk of diseases related to its exposure.
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Arsénico/metabolismo , Micronutrientes/administración & dosificación , Adulto , Anciano , Estudios Transversales , Femenino , Humanos , México , Persona de Mediana EdadRESUMEN
OBJECTIVE: To identify and reassign misclassified AIDS deaths in Mexico, reconstructing the time series of mortality from 1983 to 2012, by state, sex, age, and affiliation to social security. MATERIALS AND METHODS: 15.5 million deaths from 1979 to 2012 were analyzed. The HIV-AIDS mortality correction was done in three phases: a) those causes directly related to AIDS; b) by miscoded deaths, and c) AIDS deaths hidden in other underlying causes of death. Age-standardized rates of mortality (SMR) were calculated by sex, affiliation to social security, and state. RESULTS: 107 981 AIDS deaths from 1983 to 2012 were accumulated, representing 11% of total deaths observed for the period. The SMR in men for all age groups begins to decline since 1996, while for women the decline started in 2008. A similar picture is observed for the population with / without social security. Heterogeneity is a feature for SMR by state. CONCLUSION: An easily replicable methodology for the correction of mortality from AIDS, which generates relevant information for decision making based on the evidence is presented.
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Infecciones por VIH/mortalidad , Clasificación Internacional de Enfermedades , Infecciones Oportunistas Relacionadas con el SIDA/mortalidad , Síndrome de Inmunodeficiencia Adquirida/mortalidad , Adolescente , Adulto , Distribución por Edad , Anciano , Causas de Muerte , Niño , Preescolar , Comorbilidad , Errores Diagnósticos , Femenino , Humanos , Lactante , Masculino , Pacientes no Asegurados , México/epidemiología , Persona de Mediana Edad , Mortalidad/tendencias , Reproducibilidad de los Resultados , Estudios Retrospectivos , Distribución por Sexo , Seguridad Social , Adulto JovenRESUMEN
BACKGROUND: Severe periodontal disease is a chronic inflammatory gingival process associated with systemic diseases. OBJECTIVE: To determine the prevalence of severe periodontal disease and its association with respiratory diseases among hospitalized patients at the Institute of Respiratory Diseases "Ismael Cosio Villegas" (INER) in 2011. MATERIAL AND METHODS: A cross-sectional study was developed. The severe periodontal disease was diagnosed by the Department of Stomatology. The International Classification of Diseases 10th revision was used. A multinomial logistic was fit to estimate relative-risk. RESULTS: Three thousand and fifty-nine patients were included; 772/3,059 (25.2%) had severe periodontal disease. After controlling for age, sex, inpatient days, death, and socioeconomic status, the infectious respiratory diseases that were significantly associated with severe periodontal disease were: HIV/AIDS (RR: 10.6; 95% CI: 9.1-23.3; p < 0.0001); pneumonia (RR: 2.6; 95% CI: 2.2-5.7; p < 0.0001); pulmonary tuberculosis and its sequels (RR: 2.1; 95% CI: 1.6-4.9; p < 0.0001); and lung abscess (RR: 2.6; 95% CI: 1.6-7.8; p = 0.002). Lung cancer and pleural diseases were also significantly associated with severe periodontal disease. CONCLUSIONS: High prevalence of severe periodontal disease was observed in the different respiratory diseases. Severe periodontal disease was associated with both infectious and non-infectious respiratory diseases. It is important to study an oral health intervention.
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Enfermedades Periodontales/complicaciones , Enfermedades Periodontales/epidemiología , Trastornos Respiratorios/complicaciones , Estudios Transversales , Femenino , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Índice de Severidad de la Enfermedad , Centros de Atención TerciariaRESUMEN
OBJECTIVES: This observational study assessed the differences in the gender of the first and last authors in the most-cited dental articles over the last 4 decades. STUDY DESIGN AND SETTING: Articles were obtained through an electronic search of the most-cited articles in dentistry by decade (total n = 400 articles). The 100 most-cited studies in each decade (1980-1989, 1990-1999, 2000-2009, and 2010-2019), with any study design, with results in dentistry were eligible. The gender of the first and last authors was determined using the Genderize database. Comparative evaluation of gender distribution in general and across the 4 decades was performed with the Chi-square test, and the contribution of variables on the citation rate of articles was performed using linear regression. RESULTS: There were statistical differences between the gender distributions, with a predominance of men in the first (83.8%) and the last (86.8%) positions (P < .001). Over the decades, there was a tendency for an increase in the proportion of women as the last author (P = .002; Chi-square trend Test), with an increase of women from 6% to 22% across the last 4 decades. However, no statistically significant differences were observed between the genders for the first author in the last 4 decades (P = .163; Chi-square trend Test). CONCLUSION: The findings indicate that men lead a large percentage of the most-cited articles in dentistry and that this trend has not shown substantial modifications over the last years. Nonetheless, for the position of last authorship, an increase in women's representativity was observed over the last decades.
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Bibliometría , Humanos , Femenino , Masculino , Autoria , Odontología/estadística & datos numéricos , Factores Sexuales , Sexismo/estadística & datos numéricos , Publicaciones Periódicas como Asunto/estadística & datos numéricosRESUMEN
OBJECTIVE: To determine the effect of altitude of residence on influenza A (H1N1). MATERIALS AND METHODS: We analyzed 207 135 officially notified of influenza-like illness (ILI) cases, 23 048 hospitalizations and 573 deaths during the first months of the novel pandemic influenza A H1N1 virus, to examine if residents of high altitude had more frequently these adverse outcomes. RESULTS: Adjusted rates for hospitalization and hospital mortality rates increased with altitude, probably due to hypoxemia.
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Altitud , Mortalidad Hospitalaria , Hospitalización/estadística & datos numéricos , Subtipo H1N1 del Virus de la Influenza A , Gripe Humana/complicaciones , Gripe Humana/epidemiología , Pandemias , Neumonía Viral/epidemiología , Adolescente , Adulto , Niño , Humanos , México/epidemiología , Persona de Mediana Edad , Adulto JovenRESUMEN
OBJECTIVE: To present the results of the burden of disease, injuries and risk factors in Mexico from 1990 to 2010 for the principal illnesses, injuries and risk factors by sex. MATERIALS AND METHODS: A secondary analysis of the study results published by the Global Burden of Disease 2010 for Mexico performed by IHME. RESULTS: In 2010, Mexico lost 26.2 million of Disability adjusted live years (DALYs), 56 % were in male and 44 % in women. The main causes of DALYs in men are violence, ischemic heart disease and road traffic injuries. In the case of women the leading causes are diabetes, chronic kidney disease and ischemic heart diseases. The mental disorders and musculoskeletal conditions concentrate 18% of health lost. The risk factors that most affect men in Mexico are: alcohol consumption, overweight/obesity, high blood glucose levels and blood pressure and tobacco consumption (35.6 % of DALYs lost). In women, overweight and obesity, high blood sugar and blood pressure, lack of physical activity and consumption of alcohol are responsible for 40 % of DALYs lost. In both sexes the problems with diet contribute 12% of the burden. CONCLUSIONS: The epidemiological situation in Mexico, demands an urgent adaptation and modernization of the health system.
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Costo de Enfermedad , Atención a la Salud , Heridas y Lesiones/epidemiología , Causas de Muerte , Personas con Discapacidad , Femenino , Humanos , Esperanza de Vida , Masculino , México/epidemiología , Factores de RiesgoRESUMEN
A new complex of Bi(III) and sulfapyridine was synthesized and characterized by elemental analysis, atomic absorption spectrometry, conductivity analysis, electrospray ionization mass spectrometry (ESI-MS), infrared spectroscopy, and single crystal X-ray diffraction methods. The antimicrobial and the cytotoxic activities of the compound were investigated. Elemental and conductivity analyses are in accordance to the formulation [BiCl3(C11H11N3O2S)3]. The structure of the complex reveals a distorted octahedral geometry around the bismuth atom, which is bound to three sulfonamidic nitrogens from sulfapyridine, acting as a monodentate ligand, and to three chloride ions. The presence of the compound in solution was confirmed by ESI-MS studies. The complex is 3 times more potent than the ligand against Salmonella typhimurium, 4 times against Staphylococcus aureus, Shigella dysenteriae, and Shigella sonnei and 8 times more potent against Pseudomonas aeruginosa and Escherichia coli. The compound inhibits the growth of chronic myelogenous leukemia cells with an IC50 value of 44 µM whereas the free ligand has no effect up to 100 µM.
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Antibacterianos/química , Antibacterianos/farmacología , Bismuto/química , Bismuto/farmacología , Sulfapiridina/química , Sulfapiridina/farmacología , Muerte Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Cristalografía por Rayos X , Humanos , Enlace de Hidrógeno , Células K562 , Pruebas de Sensibilidad Microbiana , Conformación MolecularRESUMEN
Mexican specialists in oncology, oncologic surgery, thoracic surgery, pneumology, pathology, molecular biology, anesthesiology, algology, psychology, nutrition, and rehabilitation (all of them experts in lung cancer treatment) in order to develop the National Consensus on Lung Cancer. The consensus has been developed as an answer to the need of updated Mexican guidelines for the optimal treatment of the disease, as well as to the requirements that such guidelines be established by multidisciplinary panel, depicting the current attention given to cancer lung cases in Mexico. Thus, this paper analyses the epidemiological review, screening, diagnosis, staging, pathology, translational medicine, and the suitable therapies for early, locally advanced, and metastatic disease in the first, second, and third lines of management, as well as rehabilitation and palliative measures.
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Carcinoma de Pulmón de Células no Pequeñas/diagnóstico , Carcinoma de Pulmón de Células no Pequeñas/terapia , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/terapia , Algoritmos , Carcinoma de Pulmón de Células no Pequeñas/complicaciones , Carcinoma de Pulmón de Células no Pequeñas/etiología , Carcinoma de Pulmón de Células no Pequeñas/secundario , Árboles de Decisión , Humanos , Neoplasias Pulmonares/complicaciones , Neoplasias Pulmonares/etiología , México , Estadificación de Neoplasias , Fumar/efectos adversosRESUMEN
OBJECTIVE: This cross-sectional study aims to determine whether the gender of the authors plays a role in the position of authorship within the 100 most cited articles in dentistry. METHODS: An electronic search was performed in October 2022 in the SCOPUS database, considering filters by 'subject area' [dentistry], 'document type' [article], and 'source type' [journal]. The search was performed without restriction on the study design, publication yearor language. Information regarding each article was then extracted. The gender of the first and last author was determined by associating their first names with the probability of the name being male or female, using the Genderize database. Comparative evaluation of gender distribution was performed with the Chi-Square test. RESULTS: Articles ranged from 5214 to 579 citations. Included studies were published between 1964 and 2019, with the majority being from journals with the highest impact factors in the field. There were statistical significance differences between the gender distribution of the first and last authors, with a predominance of man in both authorships positions (all p<0.00). Only 15% and 12.6% the most cited papers in dental research presented a woman as first and last authors, respectively. CONCLUSION: In conclusion, female authors are not as regarded as male authors in prestigious authorship positions in the most cited dental publications, and gender bias can still be considered prominent in the dental research community. CLINICAL RELEVANCE: The findings of the present study indicate that the gender imbalance in citation practices, reported in several areas, also occurs in the field of Dentistry. It is essential that more discussions be raised about gender disparities and about the female presence in the scientific community.
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Factor de Impacto de la Revista , Sexismo , Humanos , Masculino , Femenino , Estudios Transversales , Bibliometría , AutoriaRESUMEN
Background: Reproducibility is a central tenant of research. We aimed to synthesize the literature on reproducibility and describe its epidemiological characteristics, including how reproducibility is defined and assessed. We also aimed to determine and compare estimates for reproducibility across different fields. Methods: We conducted a scoping review to identify English language replication studies published between 2018 and 2019 in economics, education, psychology, health sciences, and biomedicine. We searched Medline, Embase, PsycINFO, Cumulative Index of Nursing and Allied Health Literature - CINAHL, Education Source via EBSCOHost, ERIC, EconPapers, International Bibliography of the Social Sciences (IBSS), and EconLit. Documents retrieved were screened in duplicate against our inclusion criteria. We extracted year of publication, number of authors, country of affiliation of the corresponding author, and whether the study was funded. For the individual replication studies, we recorded whether a registered protocol for the replication study was used, whether there was contact between the reproducing team and the original authors, what study design was used, and what the primary outcome was. Finally, we recorded how reproducibilty was defined by the authors, and whether the assessed study(ies) successfully reproduced based on this definition. Extraction was done by a single reviewer and quality controlled by a second reviewer. Results: Our search identified 11,224 unique documents, of which 47 were included in this review. Most studies were related to either psychology (48.6%) or health sciences (23.7%). Among these 47 documents, 36 described a single reproducibility study while the remaining 11 reported at least two reproducibility studies in the same paper. Less than the half of the studies referred to a registered protocol. There was variability in the definitions of reproduciblity success. In total, across the 47 documents 177 studies were reported. Based on the definition used by the author of each study, 95 of 177 (53.7%) studies reproduced. Conclusions: This study gives an overview of research across five disciplines that explicitly set out to reproduce previous research. Such reproducibility studies are extremely scarce, the definition of a successfully reproduced study is ambiguous, and the reproducibility rate is overall modest. Funding: No external funding was received for this work.
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Prevalencia , Reproducibilidad de los ResultadosRESUMEN
OBJECTIVES: To determine the prevalence of asthma and the association between sociodemographic characteristics, spirometry, respiratory symptoms, quality of life and sleep in adults > 40 years. MATERIALS AND METHODS: This report is part of our study (Latin American Research Project Obstructive Pulmonary), held in Mexico City and the metropolitan area in 2003. We used logistic regression models adjusted for study design, where asthma was the dependent and independent variable respiratory symptoms, sociodemographic and clinical characteristics among others. RESULTS: The prevalence of physician-diagnosed asthma was: 3.3% in men and 6.2% in women. Decreased lung function in asthmatics was observed. In multivariate analysis, after adjusting for potential confounders, asthmatics had a higher risk of excessive daytime sleepiness more snoring [OR = 3.2 (95% CI 1.4-7.4), p= 0.008], and more frequent work absences due to respiratory problems [OR = 5.1 (95% CI 2.5-10.4), p<0.0001]. CONCLUSIONS: The prevalence of asthma was 5%. Asthmatics showed lower quality of life and lung function.
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Asma/epidemiología , Adulto , Anciano , Anciano de 80 o más Años , Asma/fisiopatología , Asma/psicología , Estudios Transversales , Femenino , Humanos , Masculino , México/epidemiología , Persona de Mediana Edad , Prevalencia , Calidad de Vida , Pruebas de Función Respiratoria , Trastornos Intrínsecos del Sueño/epidemiología , Factores Socioeconómicos , Población Urbana/estadística & datos numéricosRESUMEN
BACKGROUND AND OBJECTIVE: To evaluate the current hiring practices of academic institutions around the world, with regard to the mention of advertisements for Open Science (OS) in research based, faculty, and postdoctoral positions. STUDY DESIGN: Cross-sectional study, using 189 global institutions from the Center for Science and Technology Leiden ranking of world universities of 2017, including the U15 Group (Canadian Research-Intensive Universities), and five self-selected supplementary institutions. METHODS: The main outcome measure for our study is the level of OS in job advertisements, assessed using the Modified Open Science Modular Scheme. RESULTS: After assessing 305 job advertisements for academic positions in 91 institutions, only 2 (0.6%) had any explicit mention of OS in their job advertisements on the Modified Open Science Modular Scheme. The sample assessed the level of open science for 39.0% Associate and/or Assistant professor positions, 30.8% Researcher and/or Postdoctoral fellow positions, and 18.7% of Tenured positions. The remaining 11.5% were for positions such as lectureship, research associate, chair, dean, director and other. CONCLUSION: This study emphasizes the need for increased recognition of OS as a characteristic in research-active job advertisements. As evident in the alarmingly low percentage of job advertisements that mentioned OS (0.6%), the movement towards enhanced OS profiles across academic institutions is highly encouraged. This can be achieved through increased recognition of OS in research job advertisements and demonstrating the means in which institutions promote OS such as, encouraging preprints, publishing in open access journals, and the importance of data sharing.
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Docentes , Selección de Personal , Canadá , Estudios Transversales , Humanos , EdiciónRESUMEN
Since clinical approval of the first liposomal formulation encapsulating a chemotherapeutic agent, nanoscale delivery systems have been a rapidly developing science [...].