Screening tool for restrictive and obstructive ventilatory abnormalities in a population-based survey

Abstract 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.

Screening Tool for Restrictive and Obstructive Ventilatory Abnormalities in a Population-Based Survey.

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.

Dietary flavonoids improve urinary arsenic elimination among Mexican women.

Inorganic arsenic (iAs) exposure increases risk of several diseases, including cancer. Some nutrients such as flavonoids enhance glutathione activity, which in turn play a key role in iAs elimination. Our objective was to explore whether dietary non-soy flavonoids are associated with iAs metabolism. We hypothesized that the intake of flavonoids belonging to the following groups, flavan-3-ols, flavone, flavonol, flavanone, and anthocyanidin, is positively associated with urinary dimethylarsinic acid (DMA), which is the most soluble iAs metabolite excreted. We performed a cross-sectional study that included 1027 women living in an arsenic-contaminated area of northern Mexico. Flavonoid intake was estimated using a validated food frequency questionnaire. Concentration of urinary iAs and its metabolites (monomethylarsonic acid and DMA) were determined by high performance liquid chromatography ICP-MS. Results showed positive significant associations between DMA and the flavonoid groups flava-3-ols (ß= 0.0112) and flavones (ß= 0.0144), as well as the individual intake of apigenin (ß= 0.0115), luteolin (ß= 0.0138), and eriodictyol (ß= 0.0026). Our findings suggest that certain non-soy flavonoids may improve iAs elimination; however, there is still very limited information available regarding the consumption of flavonoids and iAs metabolism.

Arsenic metabolism and cancer risk: A meta-analysis.

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.

Phthalate exposure, flavonoid consumption and breast cancer risk among Mexican women.

OBJECTIVE: To evaluate if selected phthalate exposure and flavonoid intake interact on breast cancer (BC) risk. MATERIAL AND METHODS: Interviews and urine samples were obtained from 233 women with histologically confirmed BC and 221 healthy controls matched by age and place of residence, from various states of northern Mexico. Urinary metabolites concentrations of diethyl phthalate (DEP), butyl benzyl phthalate (BBzP) and dioctyl phthalate (DOP) were determined by solid-phase extraction coupled with high-performance liquid chromatography/isotope dilution/tandem mass spectrometry. Using a semiquantitative food frequency questionnaire, consumption of five types of flavonoids (anthocyanidins, flavan-3-ols, flavanones, flavones and flavonols) was estimated according to three food groups: vegetables, fruits and legumes-oil seeds. RESULTS: A higher intake of anthocyanidins and flavan-3-ols (from vegetables), synergistically increased the negative association between BBzP and BC. No other significant flavonoid-phthalate multiplicative interactions on the risk for BC were found. CONCLUSION: The consumption of some flavonoids may interact with exposure to phthalates on the risk of BC. Epidemiological and underlying mechanisms information is still insufficient and requires further investigations.

Dietary micronutrient intake and its relationship with arsenic metabolism in Mexican women.

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.

Breast cancer age at diagnosis patterns in four Latin American Populations: A comparison with North American countries.

BACKGROUND: In the Latin America countries (LAC), one in five breast cancer (BC) cases occur in women younger than 45 years, almost twice the frequency seen in developed countries. Most BC cases in younger women are premenopausal and are generally more difficult to detect at early stages and to treat than postmenopausal cancers. We employ data from four high quality population-based registries located in LAC and assess the extent to which the higher frequency of BC occurring in younger women is due to a younger population structure, compared to that of developed countries. Next, we analyze secular and generational trends of incidence rates in search for additional explanations. METHODS: Using data from the International Agency for Research on cancer, between 1988 and 2007, the age distribution of BC incident cases for registries located in Brazil, Colombia, Costa Rica, Ecuador is compared to that of USA and Canadian registries, both before and after removing differences in population age structure. An age-period-cohort modelling of incidence rates is also conducted in all compared registries to identify secular and generational effects. RESULTS: BC incident cases in the LAC registries present, on average, at an earlier age than in the USA and Canadian registries and for 2003-2007, between 20 and 27% of cases occur in women aged 20-44. About two thirds of the difference in age distribution between LAC and USA registries is attributable to the younger age distribution in the LAC base populations. The USA registries show the highest age-specific BC incidence rates of all compared aggregated registries, at all ages. However, in all the LAC registries incidence rates are rapidly increasing, fueled by a strong birth cohort effect. This cohort effect may be explained by important reduction in fertility rates occurring during the second half of the 20th century, but also by a greater exposure to other risk factors for BC related to the adoption of life styles more prevalent in developed countries. CONCLUSION: The younger age at presentation of BC incident cases seen in the analyzed LAC registries, and possibly in many Latin American countries, is not only attributable to their relatively young population age structure but also to the low incidence rates in older women. As more recently born cohorts, with greater exposure to risk factors for postmenopausal BC, reach older age, incidence rates will be more similar to the rates seen in the USA and Canadian registries. There is a need for additional research to identify determinants of the higher BC rate among younger women in these countries.

[Prevalence of severe periodontal disease and its association with respiratory disease in hospitalized adult patients in a tertiary care center]. / Prevalencia de enfermedad periodontal grave (EPG) y su asociación con enfermedades respiratorias en pacientes adultos hospitalizados en un centro de tercer nivel.

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.

[Correcting for misclassified HIV/aids deaths in Mexico: Retrospective analysis, 1983-2012]. / Corrección de la mala clasificación de las muertes por sida en México: Análisis retrospectivo de 1983 a 2012.

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.

Corrección de la mala clasificación de las muertes por sida en México: Análisis retrospectivo de 1983 a 2012 / Correcting for misclassified HIV/aids deaths in Mexico: Retrospective analysis, 1983-2012

Objetivo. Identificar y reasignar defunciones mal clasificadas por sida en México, y reconstruir la mortalidad 1983-2012, por entidad federativa, sexo, edad y derechohabiencia a la seguridad social. Material y métodos. Se analizaron 15.5 millones de defunciones de 1979 a 2012. La corrección de la mortalidad por sida se hizo en tres fases: a) por causas directamente relacionadas con sida, y b) por muertes mal codificadas; c) muertes por sida ocultas en otras causas. Se calcularon tasas estandarizadas por edad de mortalidad (TEM) por sexo, derechohabiencia a la seguridad social y entidad federativa. Resultados. Se acumularon 107981 muertes por sida entre 1983 y 2012 (11% más del total de muertes observadas). La TEM en hombres, para todos los grupos de edad, empieza a descender desde 1996, mientras que para las mujeres la caída inicia en 2008. Un panorama similar se observa para la población con/sin seguridad social. La heterogeneidad caracteriza la TEM estatal. Conclusión. Se presenta una metodología fácilmente replicable para la corrección de la mortalidad de sida que genera información relevante para la toma de decisiones fundamentada en la evidencia.

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.

Health-related quality of life after surgery for hip fracture: a multicentric study in Mexican population.

INTRODUCTION: Hip fractures are an important cause of morbidity and mortality and one of the main causes of disability in the older population. The lifetime risk for any type of osteoporotic fracture is very high and falls within the range of 40–-50% in women and 13–-22% for men. In Mexico, the lifetime likelihood of having a hip fracture at 50 years of age is 8.5% in Mexican women and 3.8% in Mexican men, but this is expected to rise in upcoming years. AIM: This study aims to report the Health-Related Quality of Life over the first six months after a hip fracture in two public and two private tertiary care hospitals in Mexico City. METHOD: Changes over time were evaluated through visual observation of each patient’s development trajectory using the graphic representation of the EQ-5D global score. The trajectories were grouped by affinity into five levels of progress according to clinical course. The identified descriptive options were analyzed using the multinomial logistic regression model (LR). RESULTS: One-hundred-and-thirty-six (136) patients with a hip fracture were followed after surgery. Their mean age was 77 ± 10 years. During the first month, mobility, daily activities, and self-care were the most affected. The group aged between 80 and 84 years reported extreme problems regarding anxiety and depression (21%), and those aged between 50 and 74 years described having issues concerning pain and discomfort (27%). At the 6-month follow-up, only those aged > 85 years of age showed worsening of their condition, a high proportion of these ranking at level 3 in mobility, self-care, and anxiety/depression. Toward the end of the follow-up period, this last group reported having extreme problems (being unable to carry out everyday activities) and worsening of their mobility (9.2%) (inability to walk about) (LR test, p = 0.06). DISCUSSION: Patients with hip fracture showed difficulties in different areas during the first month after surgery, with steady recuperation up to month six. Age was an important factor in the recovery of all evaluated domains. This graphical tool facilitates classification, identification, and monitoring Health-Related Quality of Life in patients with hip fractures.

INTRODUCCIÓN: Las fracturas de cadera son una importante causa de morbilidad, mortalidad y una de las principales causas de discapacidad en poblaciones adultas. El riesgo en el tiempo de vida de tener una fractura por osteoporosis es muy alto, se encuentra en un rango entre 40 y 50% en mujeres y desde 13 hasta 22% para los hombres. En México la probabilidad de tener una fractura de cadera a los 50 años de edad fue de 8,5% en mujeres y 3,8% en varones, pero irán aumentando en los próximos años. OBJETIVO: El objetivo del estudio es reportar la calidad de vida relacionada con la salud durante los primeros seis meses después de una fractura de cadera, en dos hospitales públicos y dos hospitales privados de tercer nivel de atención en Ciudad de México. MÉTODO: Se evalúan los cambios en el tiempo por medio de la observación visual del desarrollo de trayectorias de cada paciente. Esta información se representa en forma gráfica usando el puntaje global del EQ-5D. Las trayectorias fueron agrupadas por afinidad en cinco niveles de progreso de acuerdo a su evolución clínica. Las opciones descriptivas identificadas se analizaron usando un modelo de regresión logística multinomial. RESULTADOS: Después de una cirugía se siguieron a 136 pacientes con fractura de cadera, cuyo promedio de edad fue de 77 ± 10 años. Durante el primer mes la movilidad, actividades de la vida diaria y cuidado de sí mismo fueron los aspectos más afectados. El grupo de edad entre 80 hasta 84 años reportó problemas extremos, presentando ansiedad y depresión en el 21% de los casos. Las personas de 50 a 74 años describieron tener dolor y malestar (27%). A los seis meses de seguimiento sólo los mayores de 85 años mostraron un deterioro de su condición. Una alta proporción de ellos se clasifican en el nivel 3 en movilidad, cuidado personal y ansiedad/depresión. Hacia el final, este último grupo informó tener problemas extremos como la incapacidad de llevar a cabo las actividades cotidianas, y la disminución de su movilidad con 9,2% en la incapacidad para caminar (prueba regresión logística multinomial, p = 0,06). DISCUSIÓN: Los pacientes con fractura de cadera mostraron dificultades en diferentes áreas durante el primer mes después de la cirugía, con una recuperación constante hasta los seis meses. La edad fue un factor importante en la recuperación de todos los dominios evaluados. Esta herramienta gráfica facilita la clasificación, identificación y monitoreo de la calidad de vida relacionada con la salud en pacientes con fractura de cadera.

Seguimiento de la calidad de vida relacionada con la salud después de una cirugía de fractura de cadera: estudio multicéntrico en población mexicana / Health-related quality of life after surgery for hip fracture: a multicentric study in Mexican population

Introducción Las fracturas de cadera son una importante causa de morbilidad, mortalidad y una de las principales causas de discapacidad en poblaciones adultas. El riesgo en el tiempo de vida de tener una fractura por osteoporosis es muy alto, se encuentra en un rango entre 40 y 50 por ciento en mujeres y desde 13 hasta 22 por ciento para los hombres. En México la probabilidad de tener una fractura de cadera a los 50 años de edad fue de 8,5 por ciento en mujeres y 3,8 por ciento en varones, pero irán aumentando en los próximos años. Objetivo El objetivo del estudio es reportar la calidad de vida relacionada con la salud durante los primeros seis meses después de una fractura de cadera, en dos hospitales públicos y dos hospitales privados de tercer nivel de atención en Ciudad de México. Método Se evalúan los cambios en el tiempo por medio de la observación visual del desarrollo de trayectorias de cada paciente. Esta información se representa en forma gráfica usando el puntaje global del EQ-5D. Las trayectorias fueron agrupadas por afinidad en cinco niveles de progreso de acuerdo a su evolución clínica. Las opciones descriptivas identificadas se analizaron usando un modelo de regresión logística multinomial. Resultados Después de una cirugía se siguieron a 136 pacientes con fractura de cadera, cuyo promedio de edad fue de 77 +/- 10 años. Durante el primer mes la movilidad, actividades de la vida diaria y cuidado de sí mismo fueron los aspectos más afectados. El grupo de edad entre 80 hasta 84 años reportó problemas extremos, presentando ansiedad y depresión en el 21 por ciento de los casos. Las personas de 50 a 74 años describieron tener dolor y malestar (27 por ciento). A los seis meses de seguimiento sólo los mayores de 85 años mostraron un deterioro de su condición. Una alta proporción de ellos se clasifican en el nivel 3 en movilidad, cuidado personal y ansiedad/depresión

Introduction Hip fractures are an important cause of morbidity and mortality and one of the main causes of disability in the older population. The lifetime risk for any type of osteoporotic fracture is very high and falls within the range of 40–50 percent in women and 13–22 percent for men. In Mexico, the lifetime likelihood of having a hip fracture at 50 years of age is 8.5 percent in Mexican women and 3.8 percent in Mexican men, but this is expected to rise in upcoming years. Aim This study aims to report the Health-Related Quality of Life over the first six months after a hip fracture in two public and two private tertiary care hospitals in Mexico City. Method Changes over time were evaluated through visual observation of each patient’s development trajectory using the graphic representation of the EQ-5D global score. The trajectories were grouped by affinity into five levels of progress according to clinical course. The identified descriptive options were analyzed using the multinomial logistic regression model (LR). Results One-hundred-and-thirty-six (136) patients with a hip fracture were followed after surgery. Their mean age was 77 +/- 10 years. During the first month, mobility, daily activities, and self-care were the most affected. The group aged between 80 and 84 years reported extreme problems regarding anxiety and depression (21 percent), and those aged between 50 and 74 years described having issues concerning pain and discomfort (27 percent). At the 6-month follow-up, only those aged > 85 years of age showed worsening of their condition, a high proportion of these ranking at level 3 in mobility, self-care, and anxiety/depression. Toward the end of the follow-up period, this last group reported having extreme problems (being unable to carry out everyday activities) and worsening of their mobility (9.2 percent (inability to walk about) (LR test, p = 0.06

Efficient screening for COPD using three steps: a cross-sectional study in Mexico City.

BACKGROUND: Underdiagnosis of chronic obstructive pulmonary disease (COPD) in primary care can be improved by a more efficient screening strategy. AIMS: To evaluate a three-step method of screening for COPD consisting of an initial short questionnaire followed by measurement of forced expiratory volume in 1s/forced expiratory volume in 6s (FEV1/FEV6) using an inexpensive pocket spirometer in those with high risk, and diagnostic quality spirometry in those with a low FEV1/FEV6. METHODS: We analysed two related Mexico City cross-sectional samples. The 2003 Mexico City PLATINO survey (n=542) was used to develop a short questionnaire to determine the risk of COPD and a 2010 survey (n=737) additionally used a pocket spirometer. The discriminatory power of the two instruments was assessed with receiver operator characteristic (ROC) curves using three COPD definitions. RESULTS: The developed COPD scale included two variables from a simple questionnaire and, in ROC analysis, an area under the curve (AUC) between 0.64 and 0.77 was found to detect COPD. The pocket spirometer had an AUC between 0.85 and 0.88 to detect COPD. Using the COPD scale as a first screening step excluded 35-48% of the total population from further testing at the cost of not detecting 8-18% of those with COPD. Using the pocket spirometer and sending those with a FEV1/FEV6<0.80 for diagnostic quality spirometry is very efficient, and substantially improved the positive predictive value at the cost of not detecting one-third of COPD cases. CONCLUSIONS: A three-step screening strategy for COPD substantially reduces the need for spirometry testing when only a COPD scale is used for screening.

La carga de enfermedad, lesiones, factores de riesgo y desafíos para el sistema de salud en México / Burden of disease, injuries, risk factors and challenges for the health system in Mexico

Objetivo. Presentar los resultados de la carga de enfermedad en México de 1990 a 2010 para las principales enfermedades, lesiones y factores de riesgo, por sexo. Materiales y métodos. Se realizó un análisis secundario del estudio de la carga mundial de la enfermedad 2010. Resultados. En 2010 se perdieron 26.2 millones de años de vida saludable (AVISA), 56% en hombres y 44% en mujeres. Las principales causas de AVISA en hombres fueron violencia, cardiopatía isquémica y los accidentes de tránsito. En las mujeres fueron la diabetes, la enfermedad renal crónica y la cardiopatía isquémica. Los trastornos mentales y musculoesqueléticos concentran 18% de la carga. Los factores de riesgo que más afectan a los hombres son sobrepeso/obesidad; niveles de glucosa en sangre y de presión arterial elevados; y el consumo de alcohol y tabaco (35.6% de AVISA perdidos). En las mujeres, el sobrepeso y la obesidad; glucosa elevada; hipertensión arterial; baja actividad física; y el consumo de alcohol y tabaco fueron responsables de 40% de los AVISA perdidos; en ambos sexos, la dieta contribuye con 12% de la carga. Conclusiones. El panorama epidemiológico en México demanda una urgente adecuación y modernización del sistema de salud.

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.

Late-life depressive symptoms: prediction models of change.

BACKGROUND: Depression is a well-recognised problem in the elderly. The aim of this study was to determine the factors associated with predictors of change in depressive symptoms, both in subjects with and without baseline significant depressive symptoms. METHODS: Longitudinal study of community-dwelling elderly people (>60 years or older), baseline evaluations, and two additional evaluations were reported. Depressive symptoms were measured using a 30-item geriatric depression scale, and a score of 11 was used as cut-off point for significant depressive symptoms in order to stratify the analyses in two groups: with significant depressive symptoms and without significant depressive symptoms. Sociodemographic data, social support, anxiety, cognition, positive affect, control locus, activities of daily living, recent traumatic life events, physical activity, comorbidities, and quality of life were evaluated. Multi-level generalised estimating equation model was used to assess the impact on the trajectory of depressive symptoms. RESULTS: A number of 7882 subjects were assessed, with 29.42% attrition. At baseline assessment, mean age was 70.96 years, 61.15% were women. Trajectories of depressive symptoms had a decreasing trend. Stronger associations in those with significant depressive symptoms, were social support (OR.971, p<.001), chronic pain (OR 2.277, p<.001) and higher locus of control (OR.581, p<.001). In contrast for those without baseline significant depressive symptoms anxiety and a higher locus of control were the strongest associations. CONCLUSIONS: New insights into late-life depression are provided, with special emphasis in differentiated factors influencing the trajectory when stratifying regarding basal status of significant depressive symptoms. LIMITATIONS: The study has not included clinical evaluations and nutritional assessments.

The impact of altitude on hospitalization and hospital mortality from pandemic 2009 influenza A (H1N1) virus pneumonia in Mexico.

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.

Nurse home visits with or without alert buttons versus usual care in the frail elderly: a randomized controlled trial.

OBJECTIVE: To assess whether an intervention based on nurse home visits including alert buttons (NV+AB) is effective in reducing frailty compared to nurse home visits alone (NV-only) and usual care (control group) for older adults. DESIGN: Unblinded, randomized, controlled trial. SETTING: Insured population covered by the Mexican Social Security Institute living in the city of Ensenada, Baja California, Mexico. PARTICIPANTS: Patients were aged over 60 years with a frailty index score higher than 0.14. INTERVENTION: After screening and informed consent, participants were allocated randomly to the control, NV+AB, or NV-only groups. MEASUREMENTS: The primary outcome was the frailty score 9 months later. Quality of life, depression, comorbidities, health status, and health service utilization were also considered. RESULTS: The framing sample included 819 patients. Of those, 591 were not located because they did not have a landline/telephone (341 patients), they had died (107), they were ill (50), or they were not currently living in the city (28). A screening interview was applied to 228 participants, and 57 had a score ≤0.14, 171 had ≥0.14, and 16 refused to complete the baseline questionnaire. A home visit was scheduled for 155 patients. However, 22 did not complete the baseline questionnaire. The final 133 subjects were randomized into the NV+AB (n = 45), NV-only (n = 44), and control (n = 44) groups. There were no statistically significant differences in the baseline characteristics of the groups. The mean age overall was 76.3 years (standard deviation 4.7) and 45% were men. At the baseline, 61.65% were classified as frail. At end of follow-up the adjusted prevalence of frailty in NV+AB group was 23.3% versus 58.3% in the control group. CONCLUSION: An intervention based on NV+AB seems to have a positive effect on frailty scores.

The impact of altitude on hospitalization and hospital mortality from pandemic 2009 influenza A (H1N1) virus pneumonia in Mexico / El impacto de la altitud en las tasas de hospitalización y mortalidad por el virus de la influenza A (H1N1) pandémico en México

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.

OBJETIVO: Determinar el efecto de la altitud del lugar de residencia sobre la epidemia de influenza A (H1N1). MATERIAL Y MÉTODOS: Se analizaron 207 135 casos notificados a la Secretaría de Salud, 23 048 hospitalizaciones y 573 muertes por enfermedad similar a la influenza (ILI, por sus siglas en inglés) durante los primeros meses de la pandemia del nuevo virus de la influenza A H1N1 durante 2009, para examinar si los residentes de zonas más altas presentaron tasas más altas de hospitalización y muerte. RESULTADOS: Las tasas ajustadas de hospitalización y mortalidad hospitalaria se incrementaron con la altitud probablemente por la presencia de hipoxemia.

[Burden of disease, injuries, risk factors and challenges for the health system in Mexico]. / La carga de enfermedad, lesiones, factores de riesgo y desafíos para el sistema de salud en México.

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.

[National consensus of diagnosis and treatment of non-small cell lung cancer]. / Consenso nacional de diagnóstico y tratamiento del cáncer de pulmón de células no pequeñas.

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.