Lesiones no intencionales en México. Ensanut Continua 2022.

OBJETIVO: Estimar la prevalencia de lesiones no intencionales (LNI) y sus consecuencias no fatales en población mexicana. Material y métodos. Estudio transversal con la Encuesta Nacional de Salud y Nutrición Continua 2022 (Ensanut Continua 2022), diseñada con muestreo probabilístico, polietápico y estratificado. Se estimó la prevalencia de LNI, por grupo de edad, sexo, región, estrato de residencia e índice de bienestar. RESULTADOS: La prevalencia de LNI fue 5.74% (IC95%: 5.31,6.21); 30.5% reportó consecuencias permanentes en salud y 62% requirió atención en servicios de salud públicos. Las regiones Península, Pacífico-Sur y Pacífico-Centro presentaron prevalencias más altas (6.69, 6.43 y 6.36% respectivamente), en hombres (6.8%) y en población de 10-19 años (6.51%). Las caídas fueron la causa más frecuente con 57.6%; vía pública (39.5%) y hogar (29%) los principales sitios de ocurrencia. CONCLUSIONES: Las LNI no fatales afectan de manera diferenciada a hombres y población joven; caídas y lesiones de tránsito causan importante demanda en servicios de salud y discapacidad.

Impact of accidental and intentional injuries in Mexico. Findings of the Global Burden of Disease study for 1990 and 2021.

BACKGROUND: Previous analyses on the burden of disease in Mexico identified that injuries differentially affect young people, males and working-age people. OBJECTIVE: To analyze the burden of disease due to intentional and unintentional injuries in Mexico during 1990 and 2021, at the national and state levels. MATERIAL AND METHODS: The results of the Global Burden of Disease study for the 1990-2021 period were used to describe the burden of disease attributed to injuries in Mexico. The life years lost (YLL) due to premature mortality, years lived with disability (YLD) and disability-adjusted life years (DALY) were analyzed. RESULTS: The burden of disease related to intentional injuries has increased, as also have YLDs and DALYs associated with unintentional injuries. Men continue to have higher mortality and DALY rates compared to women. Interpersonal violence and suicide have steadily increased. The analysis by state showed patterns with important variations. CONCLUSIONS: Injuries generate catastrophic consequences in terms of mortality and disability in Mexico. It is necessary to promote and strengthen programs and policies in order to improve the data system and injury prevention.

ANTECEDENTES: Análisis previos sobre la carga de la enfermedad en México identificaron que las lesiones afectan de manera diferenciada a hombres, personas jóvenes y en edad productiva. OBJETIVO: Analizar la carga de la enfermedad por lesiones intencionales y no intencionales en México durante 1990 y 2021 en los ámbitos nacional y estatal. MATERIAL Y MÉTODOS: Se utilizaron los resultados del Global Burden of Disease respecto al período 1990-2021 para describir la carga de la enfermedad por las principales causas de lesiones en México; se analizaron los años perdidos por muerte prematura (APMP), los años vividos con discapacidad (AVD) y los años de vida saludable perdidos (AVISA). RESULTADOS: La carga de la enfermedad relacionada con lesiones intencionales se ha incrementado, al igual que los AVD y AVISA por lesiones no intencionales. Los hombres continúan presentando tasas de mortalidad y AVISA más altas comparados con las mujeres. La violencia interpersonal y el suicidio se han incrementado de manera sostenida El análisis por estados mostró patrones con variaciones importantes. CONCLUSIONES: Las lesiones generan consecuencias catastróficas en términos de mortalidad y discapacidad en México. Es indispensable impulsar y reforzar los programas y políticas para mejorar el sistema de datos y la prevención de lesiones.

Riesgos de accidentes en el hogar: factores asociados y su efecto sobre la ocurrencia de accidentes en grupos vulnerables.

OBJETIVO: Estimar el nivel de exposición a riesgos de ac-cidentes en hogares vulnerables, identificando sus factores asociados y analizar su relación con la ocurrencia de acciden-tes en México. Material y métodos. Estudio transversal que analiza una submuestra de información del Secretariado Técnico del Consejo Nacional para la Prevención de Acci-dentes, recolectada durante 2016-2019. Se utilizó regresión Poisson para estimar factores asociados con el número de riesgos presentes en hogares donde residía población infantil (<5) y adulta mayor (75+) y regresión logística para analizar la ocurrencia de accidentes. RESULTADOS: En hogares con <5 hubo en promedio seis riesgos; 2.9 donde residían 75+. La prevalencia de lesiones accidentales el año previo fue 3.1% (IC95%=2.0,4.6) en <1 año, 7.6% (IC95%=6.9,8.4) en 1-4 años y 17.1% (IC95%=15.6,18.7) en 75+. Las caídas fueron la principal causa. CONCLUSIONES: Existe un elevado número de riesgos en hogares con población vulnerable; es necesario fortalecer las estrategias de prevención, educación y promoción de la salud.

Riesgos de accidentes en el hogar: factores asociados y su efecto sobre la ocurrencia de accidentes en grupos vulnerables / Risks of unintentional injuries at home: associated factors and their relation on the occurrence of injuries in vulnerable populations

Resumen: Objetivo: Estimar el nivel de exposición a riesgos de accidentes en hogares vulnerables, identificando sus factores asociados y analizar su relación con la ocurrencia de accidentes en México. Material y métodos: Estudio transversal que analiza una submuestra de información del Secretariado Técnico del Consejo Nacional para la Prevención de Accidentes, recolectada durante 2016-2019. Se utilizó regresión Poisson para estimar factores asociados con el número de riesgos presentes en hogares donde residía población infantil (<5) y adulta mayor (75+) y regresión logística para analizar la ocurrencia de accidentes. Resultados: En hogares con <5 hubo en promedio seis riesgos; 2.9 donde residían 75+. La prevalencia de lesiones accidentales el año previo fue 3.1% (IC95%=2.0,4.6) en <1 año, 7.6% (IC95%=6.9,8.4) en 1-4 años y 17.1% (IC95%=15.6,18.7) en 75+. Las caídas fueron la principal causa. Conclusiones: Existe un elevado número de riesgos en hogares con población vulnerable; es necesario fortalecer las estrategias de prevención, educación y promoción de la salud.

Abstract: Objective: To estimate level of exposure to different risks of unintentional injuries (UI) at home, identifying factors associated, and to analyze its relation to the occurrence of injuries in Mexican vulnerable populations. Materials and methods: A crossover study design analyzed secondary information from the leading agency for UI prevention (Ministry of Health) collected during 2016-2019. Using Poisson regression, factors associated to the number of risks present at home were analyzed in households with children (<5) and elders (75+); logistic regression analyzed factors associated with the occurrence of UI. Results: Households with <5 had an average of six risks; 2.9 where 75+ lived. Prevalence of UI the previous year was 3.1% (95%CI=2.0,4.6) in <1 year, 7.6% (95%CI=6.9,8.4) in 1-4 years and 17.1% (95%CI=15.6,18.7) in 75+. Falls were the main cause. Conclusions: There is a high number of risks in households with vulnerable populations; it is necessary to strengthen prevention, education and health promotion strategies.

Factors associated with the severity of road traffic injuries from emergency department based surveillance system in two Mexican cities.

BACKGROUND: Limited data from low- and middle-income countries (LMICs) on the severity of road traffic injuries (RTIs) and their relation to different variables of interest are routinely obtained. Knowledge on this subject relies on evidence from high-income countries, which might not be the same as in LMICs. This information is greatly needed to advance and inform local and regional efforts towards the United Nations' Decade of Action and the Sustainable Development Goals. METHODS: From May 2012 to November 2014, a RTI surveillance system was implemented in two referral hospitals in two Mexican cities, León and Guadalajara, with the objective of exploring the relationship between Injury Severity Score (ISS) and different sociodemographic characteristics of the injured as well as different variables related to the event and the environment. All individuals suffering RTIs who visited the Emergency Rooms (ER) were included after granting informed consent. A Zero-Truncated Negative Binomial Model was employed to explore the statistical association between ISS and variables of interest. RESULTS: 3024 individuals participated in the study: 2185 (72.3%) patients from León and 839 patients (27.7%) from Guadalajara. Being male, in the 20-59 age-group, having less schooling, events occurring in Guadalajara, on Sundays, at night, and arriving at ER via public/private ambulance were all associated with an increased log count of ISS. Found a significant interaction effect (p-value< 0.05) between type of road user and alcohol intake six hours before the accident on severity of the injury (ISS). The use of illicit drugs, cellphones and safety devices during the event showed no association to ISS. CONCLUSIONS: Our study contributes to the statistical analysis of ISS obtained through RTI hospital surveillance systems. Findings might facilitate the development and evaluation of focused interventions to reduce RTIs in vulnerable users, to enhance ER services and prehospital care, and to reduce drink driving.

Suicidal behaviour in adolescents: Educational interventions in Mexico.

Suicide in adolescents constitutes a public health problem throughout the world. The objective of this study was to identify the prevalence of suicidal behaviour in a public middle school in Mexico and to implement appropriate educational interventions in the school and community contexts. Our work took place from September 2017 to July 2018. We conducted a quasi-experimental, mixed-methodology study with 12-year-old students in first year of middle school (n = 29), using an educational intervention approach within the frame of the Life Skills Education methodology. We included family members and academic staff in the study with the view of sensitising them to suicidal behaviour. At the community level, we worked with the adolescent and adult populations to form 'gatekeepers' (guardians). We administered a questionnaire on psychosocial indicators of depression and suicide risk to 383 students in their first-to-third years of middle school. Other questionnaires were applied, and life skills focus groups (FGs) were organised with the educational intervention participants. The questionnaires addressed suicidal behaviour in adolescents, alcohol consumption, life skills and prosociality. Prevalence of attempted suicide cases came to 14.1% (95 CI% 10.7-17.9), the average age of those who reported having hurt themselves with the purpose of taking their lives was 12.9 years, 75% of those who had attempted suicide were female and 64.8% had consumed alcohol. The educational intervention with students achieved a statistically significant increase in the life skills of participants, specifically as regards self-awareness and overall scores. The family members in the FGs developed greater awareness of suicidal behaviour, and the adolescents engaged at the community level significantly broadened (p < .05) their knowledge of depression. In developing countries such as Mexico, it is essential not only to increase the number of interventions for preventing suicidal behaviour in adolescents, but also to improve instruments for measuring the extent of the problem.

Speeding in the city of Xalapa, Mexico: Prevalence and associated factors.

OBJECTIVE: To estimate the prevalence of speeding in the city of Xalapa, Veracruz, in Mexico and to identify factors potentially associated to this risk behavior. METHODS: A cross-sectional study was conducted on December 2019 in Xalapa, Veracruz. Speed measurement was conducted in a random sample of 10% of all the main roads in the urban area (n = 12). Observations were conducted over the course of one week at different times spending no more than 1.5 h in each site at a time. All vehicles circulating in each observation site during the data collection were included in the sample. Characteristics of drivers, vehicles and the environment were also collected and analyzed, using logistic regression analysis and a multiple ordinal regression model to identify factors associated to speeding and more serious violations of speed limits. RESULTS: Average speed of the 3,390 vehicles observed was 50.97 km/h. Prevalence of speeding was 65.66% (95%-CI: 64.04-67.26%); 26.96% (95%-CI: 25.47-28.49) exceeded the speed limit by 50%. Speeding and more serious violations of speed limits were more frequent in light vehicles, residential zones and during weekends. More serious violations of speed limits were also more frequent on smaller roads, where speed limit were lower and during morning hours. CONCLUSIONS: The great majority of vehicles transgress speed limits in Xalapa, Veracruz. Our results support the urgent need to implement speed control measures in the city. Changes in road infrastructure design, as well as promoting a comprehensive speeding legislation (with adequate speed limits and correctly enforced) aimed at reducing exposure to this key risk factor are recommended. As evaluation of road safety interventions is key, our data could be used as a baseline to evaluate the effects and impact of future interventions implemented in this Mexican city.

Impact of Mexican Road Safety Strategies implemented in the context of the UN's Decade of Action.

OBJECTIVE: To evaluate advancements in the prevention of road traffic injuries (RTI) in Mexico in the context of the United Nation's Decade of Action for Road Safety. METHODS: An analysis of the trend and age-period-cohort effects of RTI mortality from 1999 to 2018 was conducted. Mortality figures were age-standardized using the direct method and population estimates of 2018 as the standard. To evaluate whether advancements might be attributed to higher levels of death misclassification, we conducted sensitive analysis using multiple imputation to redistributed deaths allocated to non-specific ICD-10 codes. Non-fatal RTI from four nationally representative health surveys (2000, 2006, 2012 and 2018) were analyzed. FINDINGS: Implementation of Mexico's National Road Safety Strategy 2011-2020 was associated with an average annual percentage change reduction in the age-standardized RTI mortality rate of 1.3% (95%-CI: -1.8,-0.9). Reductions are more evident in pedestrians and four + wheelers (-6.7% and -5.3%, respectively, from 2011 to 2018); mortality trend in motorcyclists increased from 1999 to 2018 an average of 12.8% annually (95%-CI: 9.9, 15.9). Potential underestimation of mortality due to death misclassification decreased from 22.7% in 1999 to 16.4% in 2018; sensitive analysis showed that reductions might not be attributed to death misclassification. Non-fatal injuries decreased in four + wheelers but increased in motorcyclists. The number of individuals suffering permanent consequences from RTI increased. CONCLUSIONS: Results showed some potential gains of Mexico's road safety strategies: RTI in four + wheelers decreased. Efforts should be put in place urgently to prevent the growing number of RTI in motorcyclists.

Prevalence of speeding and associated factors in four Mexican cities.

BACKGROUND: Speeding is responsible for countless traffic collisions and road traffic injuries (RTIs) around the world. It threatens the lives of passengers in motor vehicles as well as the safety of other individuals sharing the public roads. Little evidence has been provided by low- and middle-income countries on speed transgression patterns. OBJECTIVE: To document the prevalence of speeding in motor vehicles with four or more wheels and to analyse the associated factors in four Mexican cities. METHODS: We conducted a cross-sectional study in the cities of Guadalajara-Zapopan, León, Cuernavaca and Villahermosa. Data on speed, drivers, vehicles, road infrastructure and the environment were collected from a randomly selected sample of urban road segments. We identified the factors associated with speeding through a logistic multiple regression model. RESULTS: With an overall prevalence of 47% (95% CI 45.83 to 48.18), speeding occurred most frequently in Villahermosa (61.07%, 95% CI 59.10 to 63.01) as compared to León (51%, 95% CI 48.07 to 53.92), Cuernavaca (47.6%, 95% CI 45.35 to 49.85) and Guadalajara-Zapopan (20.76%, 95% CI 18.75 to 22.88). Speeding increased in the afternoons, on roads with numerous lanes, on Thursdays and Sundays and in foggy weather, but decreased in cities with speed control strategies and on roads with low visibility. No differences were observed between sexes or among age groups. CONCLUSIONS: Evidence from our study highlights the urgent need to implement speed control measures such as changes in road infrastructure and design, and to promote comprehensive speeding legislation aimed at reducing exposure to this important risk factor.

Unintentional injuries in Mexico, 1990-2017: findings from the Global Burden of Disease Study 2017.

BACKGROUND: To date, the burden of injury in Mexico has not been comprehensively assessed using recent advances in population health research, including those in the Global Burden of Disease Study 2017 (GBD 2017). METHODS: We used GBD 2017 for burden of unintentional injury estimates, including transport injuries, for Mexico and each state in Mexico from 1990 to 2017. We examined subnational variation, age patterns, sex differences and time trends for all injury burden metrics. RESULTS: Unintentional injury deaths in Mexico decreased from 45 363 deaths (44 662 to 46 038) in 1990 to 42 702 (41 439 to 43 745) in 2017, while age-standardised mortality rates decreased from 65.2 (64.4 to 66.1) in 1990 to 35.1 (34.1 to 36.0) per 100 000 in 2017. In terms of non-fatal outcomes, there were 3 120 211 (2 879 993 to 3 377 945) new injury cases in 1990, which increased to 5 234 214 (4 812 615 to 5 701 669) new cases of injury in 2017. We estimated 2 761 957 (2 676 267 to 2 859 777) disability-adjusted life years (DALYs) due to injuries in Mexico in 1990 compared with 2 376 952 (2 224 588 to 2 551 004) DALYs in 2017. We found subnational variation in health loss across Mexico's states, including concentrated burden in Tabasco, Chihuahua and Zacatecas. CONCLUSIONS: In Mexico, from 1990 to 2017, mortality due to unintentional injuries has decreased, while non-fatal incident cases have increased. However, unintentional injuries continue to cause considerable mortality and morbidity, with patterns that vary by state, age, sex and year. Future research should focus on targeted interventions to decrease injury burden in high-risk populations.

[Non-fatal unintentional injuries in Mexican population: prevalence and associated factors. Ensanut 2018-19]. / Accidentes no fatales en población mexicana, prevalencia y factores asociados. Ensanut 2018-19.

OBJECTIVE: To estimate the prevalence of non-fatal uninten-tional injuries in Mexican population and to analyze individual, environmental and household factors associated with its occurrence. MATERIALS AND METHODS: A cross-sectional study, analyzed the prevalence of unintentional injuries from Encuesta Nacional de Salud y Nutrición (Ensanut 2018-19), which is a nationally representative health survey designed with a probability, stratified and cluster sampling, in three stages. Association with variables of interest was explored using logistic regression analysis. RESULTS: Prevalence of non-fatal unintentional injuries was 4.5% (IC95%: 4.2-4.7), equivalent to 5.6 million people per year. Of them, 22.3% or 1.2 million suffered permanent consequences. Probability of having unintentional injuries was higher in the North and Center regions, as in Mexico City-State of Mexico; in males from 0 to 59 and females of 60 or more years of age, in people living with disabilities and those who self-reported depres-sion symptoms. CONCLUSIONS: Strengthening unintentional injury prevention is necessary and urgent, especially within vulnerable groups of population.

OBJETIVO: Estimar la prevalencia de lesiones accidentales no fatales en población mexicana y analizar los factores individuales, ambientales y del hogar asociados con su ocu-rrencia. MATERIAL Y MÉTODOS: Se analizó la prevalencia de lesiones accidentales a partir de la Encuesta Nacional de Salud y Nutrición (Ensanut) 2018-19, diseñada con un muestreo probabilístico, estratificado y por conglomerados, en tres etapas. Se evaluó mediante regresión logística su asociación con distintas variables independientes. RESULTADOS: La pre-valencia de lesiones accidentales fue de 4.5% (IC95%: 4.2-4.7), equivalente a 5.6 millones de personas. De ellas, 22.3% o 1.2 millones sufrieron consecuencias permanentes en su estado de salud. La posibilidad de tener una lesión accidental fue mayor en región Norte, Centro y Ciudad de México-Estado de México, en hombres de 0 a 59 años, mujeres de 60 o más años, en personas con alguna discapacidad y en quienes reportaron sentir depresión. CONCLUSIONES: Es necesario y urgente reforzar la prevención de lesiones accidentales, especialmente en grupos vulnerables.

Accidentes no fatales en población mexicana, prevalencia y factores asociados. Ensanut 2018-19 / Non-fatal unintentional injuries in Mexican population: prevalence and associated factors. Ensanut 2018-19

Resumen Objetivo: Estimar la prevalencia de lesiones accidentales no fatales en población mexicana y analizar los factores individuales, ambientales y del hogar asociados con su ocurrencia. Material y métodos: Se analizó la prevalencia de lesiones accidentales a partir de la Encuesta Nacional de Salud y Nutrición (Ensanut) 2018-19, diseñada con un muestreo probabilístico, estratificado y por conglomerados, en tres etapas. Se evaluó mediante regresión logística su asociación con distintas variables independientes. Resultados: La prevalencia de lesiones accidentales fue de 4.5% (IC95%: 4.2-4.7), equivalente a 5.6 millones de personas. De ellas, 22.3% o 1.2 millones sufrieron consecuencias permanentes en su estado de salud. La posibilidad de tener una lesión accidental fue mayor en región Norte, Centro y Ciudad de México-Estado de México, en hombres de 0 a 59 años, mujeres de 60 o más años, en personas con alguna discapacidad y en quienes reportaron sentir depresión. Conclusión: Es necesario y urgente reforzar la prevención de lesiones accidentales, especialmente en grupos vulnerables.

Abstract Objective: To estimate the prevalence of non-fatal unintentional injuries in Mexican population and to analyze individual, environmental and household factors associated with its occurrence. Materials and methods: A cross-sectional study, analyzed the prevalence of unintentional injuries from Encuesta Nacional de Salud y Nutrición (Ensanut 2018-19), which is a nationally representative health survey designed with a probability, stratified and cluster sampling, in three stages. Association with variables of interest was explored using logistic regression analysis. Results: Prevalence of non-fatal unintentional injuries was 4.5% (IC95%: 4.2-4.7), equivalent to 5.6 million people per year. Of them, 22.3% or 1.2 million suffered permanent consequences. Probability of having unintentional injuries was higher in the North and Center regions, as in Mexico City-State of Mexico; in males from 0 to 59 and females of 60 or more years of age, in people living with disabilities and those who self-reported depression symptoms. Conclusions: Strengthening unintentional injury prevention is necessary and urgent, especially within vulnerable groups of population.

[Analysis of unintentional injuries in vulnerable populations, Mexico 2018.] / Análisis de las lesiones accidentales no fatales en población vulnerable, México 2018.

OBJECTIVE: To estimate the prevalence of unintentional injuries (UI) in people residing in localities with <100 000 inhabitants and to analyze its association with different environmental, household and individual characteristics. MATERIALS AND METHODS: Cross-sectional design that analyses the UI component of Ensanut 100k, which is a probabilistic national survey that focused on households beneficiaries of the program Prospera and those with fewer economic capabilities. Prevalence of UI was estimated considering the complex design of the survey. Association with variables of interest was explored using logistic regression analysis. RESULTS: Prevalence of UI was 5.15% (CI95%: 1.43-6.16); probability was higher in male, those living in the region CDMX-EdoMex, and those with hearing and motor disability. CONCLUSIONS: Policies directed to prevent UI need to be strengthened to promote health and quality of life amongst individuals, par- ticularly those with social and economic vulnerability, and to reduce the burden that these conditions impose to public health in Mexico.

OBJETIVO: Estimar la prevalencia de lesiones accidentales en población que reside en localidades con <100 000 habitantes y analizar su asociación con características individuales, ambien­tales y del hoga. MATERIAL Y MÉTODOS: Diseño transversal que analiza el componente de accidentes de la Ensanut 100k, encuesta probabilística, estratificada, por conglomerados que sobrerrepresenta hogares beneficiarios del programa Prospera y aquellos con menos recursos económicos. Su asociación con distintas variables independientes se estableció a partir de un modelo de regresión logística, considerando el muestreo complejo. RESULTADOS: La prevalencia de lesiones acciden­tales fue 5.15% (IC95%: 1.43-6.16) equivalente a cerca de 3.3 millones de personas. La probabilidad fue mayor en hombres, en la región CDMX-EdoMex y en personas con discapacidad auditiva/motora. CONCLUSIONES: Es necesario fortalecer la política de prevención de lesiones accidentales, especialmente la dirigida a grupos con alta vulnerabilidad social y económica, para cuidar su salud y calidad de vida, y reducir la carga que generan para la salud pública.

Análisis de las lesiones accidentales no fatales en población vulnerable, México 2018 / Analysis of unintentional injuries in vulnerable populations, Mexico 2018

Resumen: Objetivo: Estimar la prevalencia de lesiones accidentales en población que reside en localidades con <100 000 habitantes y analizar su asociación con características individuales, ambientales y del hogar. Material y métodos: Diseño transversal que analiza el componente de accidentes de la Ensanut 100k, encuesta probabilística, estratificada, por conglomerados que sobrerrepresenta hogares beneficiarios del programa Prospera y aquellos con menos recursos económicos. Su asociación con distintas variables independientes se estableció a partir de un modelo de regresión logística, considerando el muestreo complejo. Resultados: La prevalencia de lesiones accidentales fue 5.15% (IC95%: 1.43-6.16) equivalente a cerca de 3.3 millones de personas. La probabilidad fue mayor en hombres, en la región CDMX-EdoMex y en personas con discapacidad auditiva/motora. Conclusiones: Es necesario fortalecer la política de prevención de lesiones accidentales, especialmente la dirigida a grupos con alta vulnerabilidad social y económica, para cuidar su salud y calidad de vida, y reducir la carga que generan para la salud pública.

Abstract: Objective: To estimate the prevalence of unintentional injuries (UI) in people residing in localities with <100 000 inhabitants and to analyze its association with different environmental, household and individual characteristics. Materials and methods: Cross-sectional design that analyses the UI component of Ensanut 100k, which is a probabilistic national survey that focused on households beneficiaries of the program Prospera and those with fewer economic capabilities. Prevalence of UI was estimated considering the complex design of the survey. Association with variables of interest was explored using logistic regression analysis. Results: Prevalence of UI was 5.15% (CI95%: 1.43-6.16); probability was higher in male, those living in the region CDMX-EdoMex, and those with hearing and motor disability. Conclusions: Policies directed to prevent UI need to be strengthened to promote health and quality of life amongst individuals, particularly those with social and economic vulnerability, and to reduce the burden that these conditions impose to public health in Mexico.

[The Emergency Medical System's response and its association with different outcomes in traffic accident victims in Mexican cities]. / La respuesta del Sistema Médico de Emergencias y su relación con distintos resultados en salud en personas lesionadas por el tránsito de dos ciudades mexicanas.

The aim of this article was to analyze the timeliness of emergency medical care (time transpired between the injury and the first contact with the Emergency Medical System) and its assocation with different negative health outcome in traffic accident victims treated at two Mexican hospitals, one in Guadalajara, Jalisco, and the other in León, Guanajuato, based on data from the Motor Vehicle Accident Epidemiological Surveillance System of the Bloomberg Philanthropies' Global Road Safety Program. Information was obtained on all patients treated for motor vehicle injuries in referral hospitals from May 2012 to November 2014. Multinomial logistic regression was used to model the health outcomes, categorized as short stay, prolonged hospitalization, disability, and death, compared to timeliness of care, adjusted by different target variables. A total of 2,575 patients were analyzed. Time from injury to care was 103.74 minutes (± 231.36) in León and 75.37 minutes (± 156.87) in Guadalajara; it was 38.02 and 36.23 minutes, respectively, in patients that received prehospital medical care. Timely care was associated with less prolonged hospital stay, but not with lower incidence of disability or death. Receiving prehospital medical care was associated statistically with negative health consequences. Timely care was associated with lower probability of prolonged hospitalization. Strategies are needed to evaluate and in turn improve the technical quality of prehospital medical care, including timeliness of care and adequate regulation.

El objetivo fue analizar la oportunidad de la atención médica de emergencias (tiempo transcurrido desde que ocurrió la lesión hasta el primer contacto con el Sistema Médico de Emergencias -SME) y su relación con distintas consecuencias negativas en salud, en pacientes con lesiones causadas por el tránsito, atendidos en dos hospitales de México, uno en Guadalajara, Jalisco y otro en León, Guanajuato. Se utilizó información del Sistema de Vigilancia Epidemiológica de las Lesiones Causadas por el Tránsito, establecido como parte del Programa Global de Seguridad Vial de la Filantropía de Bloomberg. Se recabó información de todos los pacientes atendidos por lesiones causadas por el tránsito en dos hospitales de referencia, de mayo 2012 a noviembre 2014. Se realizó una regresión logística multinomial para modelar los resultados en salud, categorizados en estancia corta, hospitalización prolongada, discapacidad y defunción, con la oportunidad de la atención, ajustando por distintas variables de interés. 2.575 lesionados fueron analizados. La oportunidad de la atención fue 103,74min (± 231,36) en León y 75,37min (± 156,87) en Guadalajara, siendo 38,02 y 36,23min en quienes recibieron atención médica prehospitalaria, respectivamente. La oportunidad de la atención se asoció con una menor estancia hospitalaria prolongada, pero no con una menor incidencia de discapacidad o muerte. Recibir atención médica prehospitalaria estuvo asociado con consecuencias negativas en salud. Una atención oportuna está asociada a una menor posibilidad de tener hospitalizaciones prolongadas. Es necesario impulsar estrategias para evaluar, y eventualmente mejorar la calidad técnica de la atención médica prehospitalaria, incluyendo la oportunidad de la atención y la adecuada regulación.

O objetivo deste estudo foi analisar a oportunidade da atenção médica de emergências (tempo transcorrido desde que ocorreu a lesão até o primeiro contato com o Sistema Médico de Emergências) e sua relação com distintas consequências negativas para a saúde, em pacientes com lesões causadas pelo trânsito, atendidos em dois hospitais do México, um em Guadalajara, Jalisco e outro em León, Guanajuato. Foi utilizada informação do Sistema de Vigilância Epidemiológica das Lesões Causadas pelo Trânsito, estabelecido como parte do Programa Global de Segurança Rodoviária da Filantropia de Bloomberg. Foram recolhidas informações de todos os pacientes atendidos por lesões causadas pelo trânsito nos hospitais de referência, de maio 2012 a novembro 2014. Foi realizada uma regressão logística multinomial para modelar os resultados na saúde, categorizados como: permanência curta hospitalar, hospitalização prolongada, portadores de deficiência e óbito com oportunidade de atenção, sendo ajustada por diferentes variáveis de interesse. Foram analisados 2.575 lesionados. A chance da atenção foi 103,74min (± 231,36) em León e 75,37min (± 156,87) em Guadalajara, sendo 38.02 e 36.23 min naqueles que receberam atenção médica pré-hospitalar, respectivamente. A chance da atenção foi associada com uma menor permanência hospitalar prolongada, mas não com uma menor incidência de deficiência ou morte. Receber atenção médica pré-hospitalar foi associado com consequências negativas na saúde. Uma atenção oportuna está associada à uma menor possibilidade de sofrer hospitalizações prolongadas. É necessário estimular estratégias para avaliar, e eventualmente melhorar a qualidade técnica da atenção médica pré-hospitalar, incluindo a chance da atenção e uma adequada regulação.

La respuesta del Sistema Médico de Emergencias y su relación con distintos resultados en salud en personas lesionadas por el tránsito de dos ciudades mexicanas / The Emergency Medical System's response and its association with different outcomes in traffic accident victims in Mexican cities / A resposta do Sistema Médico de Emergências e sua relação com distintos resultados na saúde em pessoas lesionadas pelo trânsito de duas cidades mexicanas

Resumen: El objetivo fue analizar la oportunidad de la atención médica de emergencias (tiempo transcurrido desde que ocurrió la lesión hasta el primer contacto con el Sistema Médico de Emergencias -SME) y su relación con distintas consecuencias negativas en salud, en pacientes con lesiones causadas por el tránsito, atendidos en dos hospitales de México, uno en Guadalajara, Jalisco y otro en León, Guanajuato. Se utilizó información del Sistema de Vigilancia Epidemiológica de las Lesiones Causadas por el Tránsito, establecido como parte del Programa Global de Seguridad Vial de la Filantropía de Bloomberg. Se recabó información de todos los pacientes atendidos por lesiones causadas por el tránsito en dos hospitales de referencia, de mayo 2012 a noviembre 2014. Se realizó una regresión logística multinomial para modelar los resultados en salud, categorizados en estancia corta, hospitalización prolongada, discapacidad y defunción, con la oportunidad de la atención, ajustando por distintas variables de interés. 2.575 lesionados fueron analizados. La oportunidad de la atención fue 103,74min (± 231,36) en León y 75,37min (± 156,87) en Guadalajara, siendo 38,02 y 36,23min en quienes recibieron atención médica prehospitalaria, respectivamente. La oportunidad de la atención se asoció con una menor estancia hospitalaria prolongada, pero no con una menor incidencia de discapacidad o muerte. Recibir atención médica prehospitalaria estuvo asociado con consecuencias negativas en salud. Una atención oportuna está asociada a una menor posibilidad de tener hospitalizaciones prolongadas. Es necesario impulsar estrategias para evaluar, y eventualmente mejorar la calidad técnica de la atención médica prehospitalaria, incluyendo la oportunidad de la atención y la adecuada regulación.

Abstract: The aim of this article was to analyze the timeliness of emergency medical care (time transpired between the injury and the first contact with the Emergency Medical System) and its assocation with different negative health outcome in traffic accident victims treated at two Mexican hospitals, one in Guadalajara, Jalisco, and the other in León, Guanajuato, based on data from the Motor Vehicle Accident Epidemiological Surveillance System of the Bloomberg Philanthropies' Global Road Safety Program. Information was obtained on all patients treated for motor vehicle injuries in referral hospitals from May 2012 to November 2014. Multinomial logistic regression was used to model the health outcomes, categorized as short stay, prolonged hospitalization, disability, and death, compared to timeliness of care, adjusted by different target variables. A total of 2,575 patients were analyzed. Time from injury to care was 103.74 minutes (± 231.36) in León and 75.37 minutes (± 156.87) in Guadalajara; it was 38.02 and 36.23 minutes, respectively, in patients that received prehospital medical care. Timely care was associated with less prolonged hospital stay, but not with lower incidence of disability or death. Receiving prehospital medical care was associated statistically with negative health consequences. Timely care was associated with lower probability of prolonged hospitalization. Strategies are needed to evaluate and in turn improve the technical quality of prehospital medical care, including timeliness of care and adequate regulation.

Resumo: O objetivo deste estudo foi analisar a oportunidade da atenção médica de emergências (tempo transcorrido desde que ocorreu a lesão até o primeiro contato com o Sistema Médico de Emergências) e sua relação com distintas consequências negativas para a saúde, em pacientes com lesões causadas pelo trânsito, atendidos em dois hospitais do México, um em Guadalajara, Jalisco e outro em León, Guanajuato. Foi utilizada informação do Sistema de Vigilância Epidemiológica das Lesões Causadas pelo Trânsito, estabelecido como parte do Programa Global de Segurança Rodoviária da Filantropia de Bloomberg. Foram recolhidas informações de todos os pacientes atendidos por lesões causadas pelo trânsito nos hospitais de referência, de maio 2012 a novembro 2014. Foi realizada uma regressão logística multinomial para modelar os resultados na saúde, categorizados como: permanência curta hospitalar, hospitalização prolongada, portadores de deficiência e óbito com oportunidade de atenção, sendo ajustada por diferentes variáveis de interesse. Foram analisados 2.575 lesionados. A chance da atenção foi 103,74min (± 231,36) em León e 75,37min (± 156,87) em Guadalajara, sendo 38.02 e 36.23 min naqueles que receberam atenção médica pré-hospitalar, respectivamente. A chance da atenção foi associada com uma menor permanência hospitalar prolongada, mas não com uma menor incidência de deficiência ou morte. Receber atenção médica pré-hospitalar foi associado com consequências negativas na saúde. Uma atenção oportuna está associada à uma menor possibilidade de sofrer hospitalizações prolongadas. É necessário estimular estratégias para avaliar, e eventualmente melhorar a qualidade técnica da atenção médica pré-hospitalar, incluindo a chance da atenção e uma adequada regulação.

The prevalence of motorcycle helmet use from serial observations in three Mexican cities.

Motorcycle use as a functional and recreational means of transportation is increasing in Mexico; the associated mortality rate has also increased. Appropriate helmet use can reduce a motorcyclist's risk of death or serious injury. This study quantified the prevalence of motorcycle helmet use in three Mexican cities (Cuernavaca, Guadalajara-Zapopan, and León) within the context of several ongoing road safety initiatives. Four rounds of roadside observations were conducted between November 2010 and April 2012. The overall prevalence of helmet use was 73.8% among all users; helmet use was much lower among females (55.3%). Drivers tended to use helmets more frequently than passengers (76.3% vs. 51.6%). The prevalence was higher in León (85.9%, 95% CI = 84.8-87.0) than Cuernavaca (71.5%, 95% CI = 69.3-73.6) and Guadalajara-Zapopan (62.7%, 95% CI = 61.1-64.2). Helmet use decreased in León (p = 0.003) but increased in Guadalajara-Zapopan (p = 0.000) during this period. Motorcycle helmet use could be improved in all three cities. Since motorcycle use is increasing, interventions targeting motorcycle users and greater enforcement of helmet use are necessary to reduce crashes and non-fatal and fatal injuries.

[Short-term impact of changes in drinking-and-driving legislation in Guadalajara and Zapopan, Jalisco, Mexico]. / Impacto de la reforma en la legislación sobre consumo de alcohol y conducción en Guadalajara y Zapopan, Jalisco, México: una mirada en el corto plazo.

The municipalities of Guadalajara and Zapopan, Jalisco State, Mexico, have participated in efforts to reduce road traffic injuries. They have participated actively in the Mexican Road Safety Initiative since 2008. As a result, in September 2010 they passed laws to reduce the legal alcohol levels for driving motor vehicles. To assess the short-term impact of these measures on rates and severity of alcohol-related collisions and injuries, we conducted a secondary analysis of official databases on mortality, morbidity, and collisions. We performed a time-series analysis to assess the trend. Significant changes were observed in the monthly proportion of alcohol-related deaths and collision rates following these interventions. The article concludes with recommendations to improve the reform's enforcement and results.

[Road traffic injuries in Mexico: evidences to strengthen the Mexican road safety strategy]. / El estado de las lesiones causadas por el tránsito en México: evidencias para fortalecer la estrategia mexicana de seguridad vial.

Based on a review of secondary data and the scientific literature and an analysis of the ENSANut-2012 database, the current study provides a comprehensive overview of the current burden of road traffic injuries (RTI) in Mexico and analyzes the country's social response to RTI. The high collision, injury, mortality, and disability rates associated with this public health problem represent a high cost for Mexican society, especially for families. The paper argues that the Mexican response has focused on vehicle occupants while overlooking vulnerable road users and has prioritized strategies with limited effectiveness. Although the country's existing legislation addresses the main risk factors, enforcement has been limited. Finally, the paper makes some recommendations for strengthening the Mexican strategy to prevent RTI, such as safe, equitable, healthy, and sustainable mobility for all types of road users. Despite some strides in RTI prevention, there are still challenges and opportunities to be addressed in the future.

Impacto de la reforma en la legislación sobre consumo de alcohol y conducción en Guadalajara y Zapopan, Jalisco, México: una mirada en el corto plazo / Short-term impact of changes in drinking-and-driving legislation in Guadalajara and Zapopan, Jalisco, Mexico / Impacto da reforma da legislação sobre consumo de álcool e direção em Guadalajara e Zapopan, Jalisco, México: um olhar de curto prazo

Los municipios de Guadalajara y Zapopan, Jalisco, México, han participado en los esfuerzos para reducir la incidencia de las lesiones causadas por el tránsito a lo largo de los años. Así, han sido partícipes de la Iniciativa Mexicana de Seguridad Vial desde 2008, y en septiembre de 2010 entró en vigor la reducción del límite legal de alcoholemia para conducir vehículos de motor. Con el fin de evaluar el impacto en el corto plazo de estas dos acciones en la ocurrencia de colisiones y lesiones, relacionadas con el consumo de alcohol, así como la gravedad de las mismas, se realizó un análisis secundario de las bases de datos oficiales de mortalidad, morbilidad y eventos viales. Se realizó un análisis de series de tiempo, con el objetivo de analizar la tendencia. Se observaron cambios significativos en el porcentaje mensual de muertes asociadas con alcohol y en la tasa de choques a partir de la aplicación de estas intervenciones. Se realizan diversas recomendaciones para mejorar la aplicación y resultados de esta reforma.

The municipalities of Guadalajara and Zapopan, Jalisco State, Mexico, have participated in efforts to reduce road traffic injuries. They have participated actively in the Mexican Road Safety Initiative since 2008. As a result, in September 2010 they passed laws to reduce the legal alcohol levels for driving motor vehicles. To assess the short-term impact of these measures on rates and severity of alcohol-related collisions and injuries, we conducted a secondary analysis of official databases on mortality, morbidity, and collisions. We performed a time-series analysis to assess the trend. Significant changes were observed in the monthly proportion of alcohol-related deaths and collision rates following these interventions. The article concludes with recommendations to improve the reform’s enforcement and results.

Os municípios de Guadalajara e Zapapan, Jalisco, México, têm particidado dos esforços para reduzir a incidência de lesões causadas pelo trânsito ao longo dos anos. Assim, têm participado da Iniciativa Mexicana de Seguridad Vial desde 2008, e em setembro de 2010 entrou em vigor a redução do limite legal de alcoolemia para condução de veículos automotores. Com o objetivo de avaliar o impacto de curto prazo dessas ações na ocorrência de acidentes e lesões relacionados ao consumo de álcool, assim como a gravidade das mesmas, realizou-se análise de séries temporais, com dados secundários das bases de dados oficiais de mortalidade, morbidade e acidentes de trânsito, de modo a analisar a tendência destes. Observou-se alterações significativas no porcentual mensal de mortes associadas ao álcool e na taxa de acidentes a partir da implementação dessas intervenções. São apresentadas diversas recomendações para melhorar a aplicação e os resultados dessa reforma.