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1.
Curr Trauma Rep ; 8(3): 66-94, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35692507

RESUMEN

Purpose of Review: Sub-Saharan Africa is a diverse context with a large burden of injury and trauma-related deaths. Relative to high-income contexts, most of the region is less mature in prehospital and facility-based trauma care, education and training, and trauma care quality assurance. The 2030 Agenda for Sustainable Development recognizes rising inequalities, both within and between countries as a deterrent to growth and development. While disparities in access to trauma care between the region and HICs are more commonly described, internal disparities are equally concerning. We performed a narrative review of internal disparities in trauma care access using a previously described conceptual model. Recent Findings: A broad PubMed and EMBASE search from 2010 to 2021 restricted to 48 sub-Saharan African countries was performed. Records focused on disparities in access to trauma care were identified and mapped to de Jager's four component framework. Search findings, input from contextual experts, comparisons based on other related research, and disaggregation of data helped inform the narrative. Only 21 studies were identified by formal search, with most focused on urban versus rural disparities in geographical access to trauma care. An additional 6 records were identified through citation searches and experts. Disparity in access to trauma care providers, detection of indications for trauma surgery, progression to trauma surgery, and quality care provision were thematically analyzed. No specific data on disparities in access to injury care for all four domains was available for more than half of the countries. From available data, socioeconomic status, geographical location, insurance, gender, and age were recognized disparity domains. South Africa has the most mature trauma systems. Across the region, high quality trauma care access is skewed towards the urban, insured, higher socioeconomic class adult. District hospitals are more poorly equipped and manned, and dedicated trauma centers, blood banks, and intensive care facilities are largely located within cities and in southern Africa. The largest geographical gaps in trauma care are presumably in central Africa, francophone West Africa, and conflict regions of East Africa. Disparities in trauma training opportunities, public-private disparities in provider availability, injury care provider migration, and several other factors contribute to this inequity. National trauma registries will play a role in internal inequity monitoring, and deliberate development implementation of National Surgical, Obstetrics, and Anesthesia plans will help address disparities. Human, systemic, and historical factors supporting these disparities including implicit and explicit bias must be clearly identified and addressed. Systems approaches, strategic trauma policy frameworks, and global and regional coalitions, as modelled by the Global Alliance for Care of the Injured and the Bellagio group, are key. Inequity in access can be reduced by prehospital initiatives, as used in Ghana, and community-based insurance, as modelled by Rwanda. Summary: Sub-Saharan African countries have underdeveloped trauma systems. Consistent in the narrative is the rural-urban disparity in trauma care access and the disadvantage of the poor. Further research is needed in view of data disparity. Recognition of these disparities should drive creative equitable solutions and focused interventions, partnerships, accompaniment, and action. Supplementary Information: The online version contains supplementary material available at 10.1007/s40719-022-00229-1.

2.
PLoS Med ; 19(4): e1003961, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-35413054

RESUMEN

BACKGROUND: Disease and disability from alcohol use disproportionately impact people in low- and middle-income countries (LMICs). While varied interventions have been shown to reduce alcohol use in high-income countries, their efficacy in LMICs has not been assessed. This systematic review describes current published literature on patient-level alcohol interventions in LMICs and specifically describes clinical trials evaluating interventions to reduce alcohol use in LMICs. METHODS AND FINDINGS: In accordance with PRISMA, we performed a systematic review using an electronic search strategy from January 1, 1995 to December 1, 2020. Title, abstract, as well as full-text screening and extraction were performed in duplicate. A meta-summary was performed on randomized controlled trials (RCTs) that evaluated alcohol-related outcomes. We searched the following electronic databases: PubMed, EMBASE, Scopus, Web of Science, Cochrane, WHO Global Health Library, and PsycINFO. Articles that evaluated patient-level interventions targeting alcohol use and alcohol-related harm in LMICs were eligible for inclusion. No studies were excluded based on language. After screening 5,036 articles, 117 articles fit our inclusion criteria, 75 of which were RCTs. Of these RCTs, 93% were performed in 13 middle-income countries, while 7% were from 2 low-income countries. These RCTs evaluated brief interventions (24, defined as any intervention ranging from advice to counseling, lasting less than 1 hour per session up to 4 sessions), psychotherapy or counseling (15, defined as an interaction with a counselor longer than a brief intervention or that included a psychotherapeutic component), health promotion and education (20, defined as an intervention encouraged individuals' agency of taking care of their health), or biologic treatments (19, defined as interventions where the biological function of alcohol use disorder (AUD) as the main nexus of intervention) with 3 mixing categories of intervention types. Due to high heterogeneity of intervention types, outcome measures, and follow-up times, we did not conduct meta-analysis to compare and contrast studies, but created a meta-summary of all 75 RCT studies. The most commonly evaluated intervention with the most consistent positive effect was a brief intervention; similarly, motivational interviewing (MI) techniques were most commonly utilized among the diverse array of interventions evaluated. CONCLUSIONS: Our review demonstrated numerous patient-level interventions that have the potential to be effective in LMICs, but further research to standardize interventions, populations, and outcome measures is necessary to accurately assess their effectiveness. Brief interventions and MI techniques were the most commonly evaluated and had the most consistent positive effect on alcohol-related outcomes. TRIAL REGISTRATION: Protocol Registry: PROSPERO CRD42017055549.


Asunto(s)
Alcoholismo , Países en Desarrollo , Alcoholismo/prevención & control , Humanos , Renta , Pobreza , Psicoterapia
3.
J Vasc Surg ; 75(1): 20-28, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34450243

RESUMEN

OBJECTIVE: Prior research in vascular surgery has identified significant gender disparities in leadership positions, but few data exist regarding gender disparities in vascular publications. This study aims to evaluate authorship trends by gender in the three highest impact factor vascular surgery journals. METHODS: In this bibliometric analysis, PubMed was searched for articles published in the European Journal of Vascular and Endovascular Surgery, the Journal of Vascular Surgery, and Annals of Vascular Surgery from 2015 to 2019. The web-based application Genderize used predictive algorithms to classify names of first and last authors as male or female. Statistical analyses regarding trends in authorship were performed using Stata16. RESULTS: A total of 6457 articles were analyzed, with first author gender predicted with >90% confidence in 83% (4889/5796) and last author gender in 88% (5078/5796). Overall, 25% (1223/4889) of articles had women first authors, and 10% (501/5078) had women last authors. From 2015 to 2019, there was a slight increase in the proportion of articles written by women first authors (P = .001), but no increase in the proportion of articles written by women last authors (P = .204). The proportion of articles written by women last authors was lower than the proportion of active women vascular surgeons in 2015 (8% of articles vs 11% of surgeons; P = .015), 2017 (9% of articles vs 13% of surgeons; P < .001), and 2019 (11% of articles vs 15% of practicing surgeons; P < .001). The average number of last-author publications was higher for men (2.35 ± 3.76) than for women (1.62 ± 1.88, P = .001). The proportion of unique authors who were women was less than the proportion of active women vascular surgeons in 2017 (10% unique authors vs 13% surgeons; P = .047), but not in 2015 (9% unique authors vs 11% surgeons; P = .192) or 2019 (13% unique authors vs 15% surgeons; P = .345). Notably, a woman last author was associated with 1.45 higher odds of having a woman first author (95% confidence interval, 1.17-1.79; P = .001). CONCLUSIONS: Over the past 5 years, there has been no significant increase in women last authors among top-tier journals in vascular surgery. Women remain under-represented as last authors in terms of proportion of published articles, but not in terms of proportion of unique authors. Nevertheless, women last authors are more likely to publish with women first authors, indicating the importance of women-led mentorship in achieving publication gender equity. Support for women surgeons through grants and promotions is essential not only for advancing last authorship gender equity, but for advancing junior faculty and trainee academic careers.


Asunto(s)
Bibliometría , Médicos Mujeres/tendencias , Sexismo/tendencias , Cirujanos/tendencias , Procedimientos Quirúrgicos Vasculares , Femenino , Humanos , Masculino , Mentores/estadística & datos numéricos , Médicos Mujeres/estadística & datos numéricos , Sexismo/estadística & datos numéricos , Cirujanos/estadística & datos numéricos
4.
PLoS One ; 15(5): e0230662, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32369492

RESUMEN

BACKGROUND: Globally, about 2.3 billion people are current alcohol drinkers, and 283 million have an alcohol use disorder. Alcohol use while driving is a major contributor to road traffic injuries (RTI). We need to understand the culture and perception of drink-driving in this setting to understand why people continue to drink drive and allow policymakers to develop more effective ways to address drink-driving behavior. This study aims to qualitatively determine what injury patients, their families, and community advisory board members in Tanzania believe about drink-driving to help inform policies to address this problem. METHODS: The semi-structured focus group was designed based on the grounded theory and assessed using thematic analysis. Focus groups participants were a convenience sample of injury patients, their families, and community advisory board (CAB) members. Analysis was iterative throughout the study. All transcripts were coded using a thematic narrative approach. Representative quotes for each theme were then selected based on comparative analysis of coding with input from research team members. RESULTS: A total of ten focus groups were conducted (4 patient, 4 family, and 2 CAB) with a total of 104 participants (37 females and 67 males). The normalization of drinking among drivers has allowed this behavior to become ingrained in the culture. Participants expressed notions that passengers are responsible for their own safety, rather than drivers being responsible for their passengers. Most participants believe it is a citizen's duty to inform the police of suspected drink-driving, however there were differing opinions about how effective informed police officers can be in practice. Focus group discussions between all three population types highlighted major themes of 'drinking is ingrained in boda boda driver culture', 'individuals have a personal responsibility to address drink-driving', and a 'police enforcement on drink-driving is necessary'. CONCLUSIONS: Normalization of drink-driving in commercial driver culture creates a dangerous environment for passengers which can be mitigated by education and health promotion. As most passengers already take personal responsibility for their own road traffic safety, they may be likely to make use of safe ride options, if available. While legislation is in place against drink-driving, police officers need to be empowered with appropriate training and funding to enforce them.


Asunto(s)
Accidentes de Tránsito/psicología , Consumo de Bebidas Alcohólicas/efectos adversos , Conducir bajo la Influencia/psicología , Heridas y Lesiones/psicología , Accidentes de Tránsito/prevención & control , Adulto , Conducción de Automóvil/psicología , Conducir bajo la Influencia/prevención & control , Femenino , Promoción de la Salud , Humanos , Aplicación de la Ley , Masculino , Policia , Tanzanía/epidemiología
5.
Front Public Health ; 8: 66, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32269983

RESUMEN

Background: Previous research has corroborated a high burden of alcohol-related injury in Brazil and the presence of socioeconomic disparities among the injured. Yet, individual-level data is scarce. To fill this gap, we examined the association between demographic and socioeconomic characteristics with non-fatal alcohol-related injury in Maringá, Brazil. Methods: We used household survey data collected during a 2015 cross-sectional study. We conducted univariate and multivariate analyses to evaluate associations of demographic (age, gender, race) and socioeconomic characteristics (employment, education, income) with non-fatal alcohol-related injury. Results: Of the 995 participants who reported injuries, 62 (6.26%) were alcohol-related. Fifty-three (85%) alcohol-related injuries were reported by males. Multivariate analysis indicated being male (OR = 5.98 95% CI = 3.02, 13.28), 15-29 years of age (OR = 3.62 95% CI = 1.72, 7.71), and identifying as Black (OR = 2.38 95% CI = 1.09, 4.95) were all significantly associated with increased likelihood of reporting an alcohol-related injury, whereas unemployment was significantly associated with decreased likelihood of reporting an alcohol-related injury (OR = 0.41 95% CI = 0.18, 0.88). Conclusion: Our findings suggest that in Maringá, being male, between the ages of 15 and 29, employed, or identifying as Black were characteristics associated with a higher risk for non-fatal alcohol-related injury. Individual level data, such as ours, should be considered in combination with area-level and country-level data when developing evidence-based public-health policies.


Asunto(s)
Etanol , Renta , Adolescente , Adulto , Brasil/epidemiología , Estudios Transversales , Demografía , Humanos , Masculino , Adulto Joven
6.
Alcohol ; 88: 73-81, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32333948

RESUMEN

BACKGROUND: Alcohol is a leading risk factor for road traffic injury in low- and middle-income countries, such as Tanzania. This research seeks to explore the drinking patterns, perceptions, and stigma of drink driving behavior of injury patients at Kilimanjaro Christian Medical Center in Moshi, Tanzania. METHODS: This mixed methods study incorporated the Perceived Alcohol Stigma (PAS), an additive Likert scale, and the Alcohol Use Disorders Identification Test (AUDIT). Results are reported as medians with IQRs. Additionally, focus groups with injury patients, their families, and community members (n = 104) were conducted and analyzed in pairs using an inductive thematic content analysis approach. RESULTS: Those who self-reported driving after ingesting 3 or more alcoholic drinks had a median AUDIT score (median = 11.0) significantly higher than those who denied drink driving (median = 5.5, p < 0.01). The PAS showed a high overall stigma against those who use alcohol but differed for drink drivers, drinkers, and abstainers (median = 20.8, 23.9, 34.9, p < 0.01). Thematic content analysis highlighted a 'disapproving of drink drivers', that 'problematic drinking is a drinking behavior which negatively affects others', and a 'passiveness toward drinking and drink driving'. CONCLUSIONS: Stigma against those who use alcohol is present in Tanzania. Perceived stigma is significantly lower among those who drink drive than those who do not. Overall, there appears to be a community-wide disapproval of drinking and driving, which is coupled with feeling unable to change this risky behavior.


Asunto(s)
Alcoholismo , Conducción de Automóvil , Conducir bajo la Influencia , Estigma Social , Adulto , Consumo de Bebidas Alcohólicas , Femenino , Humanos , Masculino , Persona de Mediana Edad , Percepción , Tanzanía , Adulto Joven
7.
Alcohol ; 83: 9-15, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31195127

RESUMEN

Alcohol is one of the leading causes of death and disability worldwide. Rates of alcohol abuse in Moshi, Tanzania, are about 2.5 times higher than the Tanzanian average. We sought to qualitatively assess the perceptions of alcohol use among injury patients in Moshi, including availability, consumption patterns, abuse, and treatments. Participants were Emergency Department injury patients, their families, and community advisory board members. Participants were included if they were ≥18 years of age, a patient or patient's family member seeking care at the Kilimanjaro Christian Medical Center Emergency Department, Moshi, Tanzania, for an acute injury, clinically sober at the time of enrollment, medically stable, able to communicate in Swahili and consented to participate. Focus group discussions were audiotaped, transcribed, translated, and analyzed in parallel using an inductive thematic content analysis approach. Resultant themes were then reanalyzed to ensure internal homogeneity and external heterogeneity. Fourteen focus group discussions, with a total of 104 participants (40 patients, 50 family members, 14 community advisory board members), were conducted. Major themes resulting from the analysis included: 1) Early/repeated exposure; 2) Moderate use as a social norm with positive attributes; 3) Complications of abuse are widely stigmatized; and 4) Limited knowledge of availability of treatment. Our findings suggest that, among our unique injury population and their families, despite the normalization of alcohol-related behaviors, there is strong stigma toward complications stemming from excess alcohol use. Overall, resources for alcohol treatment and cessation, although broadly desired, are unknown to the injury population.


Asunto(s)
Consumo de Bebidas Alcohólicas/psicología , Alcoholismo/psicología , Conocimientos, Actitudes y Práctica en Salud , Heridas y Lesiones/epidemiología , Adolescente , Adulto , Consumo de Bebidas Alcohólicas/epidemiología , Alcoholismo/epidemiología , Alcoholismo/terapia , Servicio de Urgencia en Hospital , Familia , Femenino , Grupos Focales , Humanos , Masculino , Percepción , Estigma Social , Tanzanía/epidemiología , Heridas y Lesiones/etiología , Heridas y Lesiones/terapia , Adulto Joven
8.
J Surg Res ; 246: 499-505, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31679798

RESUMEN

BACKGROUND: Surgical coaching is an emerging concept of education and collaboration to improve surgical performance. Surgical education in low-resource settings remains a challenge because of confounding barriers of access, resources, and sustainability. No formal assessments of coaching as a means to improve surgical quality in low- or middle-income countries (LMICs) exist. The purpose of this review is to explore if surgical coaching could serve as an effective method of fostering continued education and advancement of surgical skills in low-resource settings. METHODS: We conducted a systematic literature search in July 2018. Included studies were peer-reviewed and met preestablished study criteria. Studies must have assessed surgical coaching, specifically defined as a means to establish continuous professional growth of trainees and practicing surgeons. RESULTS: Of 2189 articles, 175 were selected for full-text analysis, 23 met inclusion criteria for analysis, 13 of these 23 articles evaluated coaching of trainees, 10 articles assessed coaching surgeons in established careers. 18 of the 23 articles discussed skill acquisition, 4 of which assessed nontechnical skills alone, and 14 assessed technical skills or both technical and nontechnical skills. Remote or cross-institutional coaching was explored in 8 of the 23 studies. None of the studies discussed or evaluated coaching in LMICs. CONCLUSIONS: Coaching is a method of teaching surgeons at multiple stages of a career. The explored advantages of surgical coaching may be applied to continuous performance improvement and collaboration with surgeons in LMICs. Furthermore, coaching may aid in advancement of the well-established Lancet Global Surgery Indicators, improving surgical capacity and quality in LMICs.


Asunto(s)
Educación Médica Continua/métodos , Cooperación Internacional , Tutoría , Especialidades Quirúrgicas/educación , Cirujanos/educación , Competencia Clínica , Estudios de Factibilidad , Salud Global , Humanos
9.
Health Qual Life Outcomes ; 16(1): 147, 2018 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-30053816

RESUMEN

BACKGROUND: To evaluate the psychometric properties of a Swahili version of the Kessler Psychological Distress scale in an injury population in Tanzania. METHODS: Swahili version of the Kessler Psychological Distress scale was developed by translation and back-translation by a panel of native speakers of both English and Swahili. The translated instruments were administered to a sample of Tanzanian adults from a traumatic brain injury registry. The content validity, construct validity, reliability, internal structure, and external reliability were analyzed using standard statistical methods. RESULTS: Both translated versions of the Kessler Psychological Distress scale were found to be reliable (>0.85) for all tested versions. Confirmatory factor analysis of one and two factor solution showed adequate results. Kessler Psychological Distress scale scores were strongly correlated to depression and quality of life (R>0.50). CONCLUSIONS: This paper presents the first Swahili adaptations of the Kessler Psychological Distress scale as well as the first validation of these questionnaires in Tanzania. The instrument was found to have acceptable psychometric properties, resulting in a new useful tool for medical and social research in this setting.


Asunto(s)
Lesiones Traumáticas del Encéfalo/psicología , Comparación Transcultural , Cuestionario de Salud del Paciente , Calidad de Vida/psicología , Estrés Psicológico/diagnóstico , Adulto , Lesiones Traumáticas del Encéfalo/complicaciones , Depresión/complicaciones , Depresión/psicología , Análisis Factorial , Femenino , Humanos , Masculino , Persona de Mediana Edad , Psicometría , Reproducibilidad de los Resultados , Estrés Psicológico/complicaciones , Tanzanía , Traducciones , Adulto Joven
10.
Alcohol Alcohol ; 53(1): 112-120, 2018 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-29281046

RESUMEN

AIMS: To develop Swahili versions of the Alcohol Use Disorders Identification Test (AUDIT) and CAGE questionnaires and evaluate their psychometric properties in a traumatic brain injury (TBI) population in Tanzania. METHODS: Swahili versions of the AUDIT and CAGE were developed through translation and back-translation by a panel of native speakers of both English and Swahili. The translated instruments were administered to a sample of Tanzanian adults from a TBI registry. The validity and reliability were analyzed using standard statistical methods. RESULTS: The translated versions of both the AUDIT and CAGE questionnaires were found to have excellent language clarity and domain coherence. Reliability was acceptable (>0.85) for all tested versions. Confirmatory factor analysis of one, two and three factor solution for the AUDIT and one factor solution for the CAGE showed adequate results. AUDIT and CAGE scores were strongly correlated to each other (R > 0.80), and AUDIT scores were significantly lower in non-drinkers compared to drinkers. CONCLUSIONS: This article presents the first Swahili and Tanzanian adaptations of the AUDIT and CAGE instruments as well as the first validation of these questionnaires with TBI patients. Both instruments were found to have acceptable psychometric properties, resulting in two new useful tools for medical and social research in this setting.


Asunto(s)
Alcoholismo/diagnóstico , Lesiones Traumáticas del Encéfalo/complicaciones , Encuestas y Cuestionarios , Adulto , Anciano , Trastornos Relacionados con Alcohol , Alcoholismo/epidemiología , Alcoholismo/psicología , Lesiones Traumáticas del Encéfalo/epidemiología , Lesiones Traumáticas del Encéfalo/psicología , Comparación Transcultural , Estudios Transversales , Cultura , Femenino , Humanos , Lenguaje , Masculino , Persona de Mediana Edad , Psicometría , Reproducibilidad de los Resultados , Factores Socioeconómicos , Tanzanía/epidemiología , Traducciones , Adulto Joven
11.
Injury ; 48(7): 1363-1370, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28529012

RESUMEN

Road traffic injuries (RTIs) continue to increase with the proliferation of motor vehicles, especially in low-income countries where safe road infrastructure is lacking. Knowing where and why RTIs occur would allow for increased safety and prevention planning. In this study, police records of 300 motor vehicle collisions which occurred between February 2013 and January 2014 in Moshi, Tanzania were reviewed. Analysis of variables including victim age, gender, type of collision, conditions, and use of safety equipment were analyzed. Geographic information system (GIS) analysis was performed to identify areas with the most collisions. Most injuries occurred at four intersections on two main corridor. Car crashes represented 48% of reports while motorcycle collisions were 35% of reports. Victims were predominantly male. The majority (64%) of RTI victims in cars used seatbelts while only 43% of motorcyclists wore helmets; none of those who used the helmet or seatbelt suffered a grievous injury. These data demonstrate that RTIs in Moshi occur in predictable high traffic locations. RTIs injure victims of all backgrounds and safety equipment is not universally utilized. More investment is needed in improved data collection methods, and a greater emphasis on intersection safety is needed to reduce these preventable injuries.


Asunto(s)
Accidentes de Tránsito/estadística & datos numéricos , Heridas y Lesiones/epidemiología , Prevención de Accidentes , Accidentes de Tránsito/prevención & control , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Automóviles , Análisis Costo-Beneficio , Planificación Ambiental , Femenino , Dispositivos de Protección de la Cabeza/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Motocicletas , Peatones , Formulación de Políticas , Política Pública , Estudios Retrospectivos , Cinturones de Seguridad/estadística & datos numéricos , Tanzanía/epidemiología , Adulto Joven
12.
Injury ; 47(11): 2450-2458, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27614672

RESUMEN

INTRODUCTION: Road traffic injuries are a leading killer of youth (aged 15-29) and are projected to be the 7th leading cause of death by 2030. To better understand road traffic crash locations and characteristics in the city of Baltimore, we used police and census data, to describe the epidemiology, hotspots, and modifiable risk factors involved to guide further interventions. MATERIALS AND METHODS: Data on all crashes in Baltimore City from 2009 to 2013 were made available from the Maryland Automated Accident Reporting System. Socioeconomic data collected by the US CENSUS 2010 were obtained. A time series analysis was conducted using an ARIMA model. We analyzed the geographical distribution of traffic crashes and hotspots using exploratory spatial data analysis and spatial autocorrelation. Spatial regression was performed to evaluate the impact of socioeconomic indicators on hotspots. RESULTS: In Baltimore City, between 2009 and 2013, there were a total of 100,110 crashes reported, with 1% of crashes considered severe. Of all crashes, 7% involved vulnerable road users and 12% had elderly or youth involvement. Reasons for crashes included: distracted driving (31%), speeding (6%), and alcohol or drug use (5%). After 2010, we observed an increasing trend in all crashes especially from March to June. Distracted driving then youth and elderly drivers were consistently the highest risk factors over time. Multivariate spatial regression model including socioeconomic indicators and controlling for age, gender and population size did not show a distinct predictor of crashes explaining only 20% of the road crash variability, indicating crashes are not geographically explained by socioeconomic indicators alone. CONCLUSION: In Baltimore City, road traffic crashes occurred predominantly in the high density center of the city, involved distracted driving and extremes of age with an increase in crashes from March to June. There was no association between socioeconomic variables where crashes occurred and hotspots. In depth analysis of how modifiable risk factors are impacted by geospatial characteristics and the built environment is warranted in Baltimore to tailor interventions.


Asunto(s)
Accidentes de Tránsito/estadística & datos numéricos , Conducción de Automóvil/estadística & datos numéricos , Censos , Policia , Trastornos Relacionados con Sustancias/epidemiología , Heridas y Lesiones/epidemiología , Accidentes de Tránsito/prevención & control , Adolescente , Adulto , Distribución por Edad , Factores de Edad , Automóviles , Baltimore/epidemiología , Estudios Transversales , Femenino , Sistemas de Información Geográfica , Humanos , Masculino , Motocicletas , Factores de Riesgo , Distribución por Sexo , Factores Socioeconómicos , Análisis Espacial , Heridas y Lesiones/prevención & control , Adulto Joven
13.
Diabetologia ; 57(12): 2566-75, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25249235

RESUMEN

AIMS/HYPOTHESIS: Developing beta cells are vulnerable to nutrient environmental signals. Early developmental processes that alter the number of pancreatic progenitors can determine the number of beta cells present at birth. Metformin, the most widely used oral agent for treating diabetes, alters intracellular energy status in part by increasing AMP-activated protein kinase (AMPK) signalling. This study examined the effect of metformin on developing pancreas and beta cells. METHODS: Pancreatic rudiments from CD-1 mice at embryonic day 13.0 (E13.0) were cultured with metformin, 5-aminoimidazole-4-carboxamide-1-ß-D-ribofuranoside (AICAR, an AMPK activator) or vehicle control in vitro. In another set of studies, pregnant C57BL/6 mice were treated with metformin throughout gestation. Embryonic (E14.0) and neonatal pancreases were then analysed for their morphometry. RESULTS: In vitro metformin treatment led to an increase in the proliferation and number of pancreatic duodenal homeobox 1-positive (PDX1(+)) progenitors. These results were reproduced by in vitro culture of embryonic pancreas rudiments with AICAR, suggesting that AMPK activation was involved. Similarly, metformin administration to pregnant dams induced an increase in both PDX1(+) and neurogenin 3-positive progenitors in the embryonic pancreas at E14.0 and these changes resulted in an increased beta cell fraction in neonates. CONCLUSIONS/INTERPRETATION: These results indicate that exposure to metformin during gestation modulates the early steps of beta cell development (prior to E14.0) towards an increase in the number of pancreatic and endocrine progenitors. These changes ultimately result in a higher beta cell fraction at birth. These findings are of clinical importance given that metformin is currently used for the treatment of gestational diabetes.


Asunto(s)
Diferenciación Celular/efectos de los fármacos , Hipoglucemiantes/farmacología , Células Secretoras de Insulina/efectos de los fármacos , Metformina/farmacología , Páncreas/efectos de los fármacos , Animales , Femenino , Ratones , Páncreas/embriología , Embarazo
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