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Search Results: 1 - 10 of 143286 matches for " González-Cossío Teresa "
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Capacidad de peso para edad y longitud para edad para predecir desmedro a los tres a?os de vida
Salud Pública de México , 1998, DOI: 10.1590/S0036-36341998000200004
Abstract: objective. to compare the capacity of two cut-off points of weight-for-age and length-for-age (-1 and -2 standard deviations) at different ages in the interval between birth and 30 months to predict stunting in three year old children. material and methods. data from a longitudinal study in guatemala were used to evaluate the hypothesis that the capacity of cut-off values of weight-for-age and length-for- age to predict stunting at three years of age varies according to age. results. length-for-age at -1 standard deviation (sd) of the who/nchs mean reference values is a satisfactory prognostic indicator of stunting at three years of age during the first semester of life, while the same index at -2 sd is adequate after 9 months of age. weight-for-age at -1 sd is a suitable indicator only at 9 months and at -2 sd the indicator is satisfactory between 15 and 24 months of age. conclusion. the capacity to predict stunting at three years of age, for weight-for-age and length-for-age cut-off values varies according to age.
Capacidad de peso para edad y longitud para edad para predecir desmedro a los tres a os de vida
Salud Pública de México , 1998,
Abstract: Objetivo. Comparar la capacidad de dos valores de demarcación de peso para la edad y de longitud para la edad (-1 y -2 desviaciones estándar) a diferentes edades, en un intervalo que va del nacimiento a los 30 meses, para predecir desmedro a los tres a os de edad. Material y métodos. Utilizando datos de un estudio longitudinal en Guatemala, se evaluó la hipótesis de que la capacidad de distintos valores de demarcación de peso para edad y longitud para edad para predecir desmedro a los tres a os de vida varía en función de la edad. Resultados. La longitud para edad a -1 desviación estándar (DE) del patrón de referencia OMS/NCHS es un indicador pronóstico satisfactorio durante el primer semestre de vida, mientras que el mismo índice a -2 DE es satisfactorio despúes de los nueve meses. En cambio, peso para edad a -1 DE es un buen indicador exclusivamente a los nueve meses, mientras que entre los 15 y los 24 meses, este valor se comporta adecuadamente. Conclusión. La capacidad para predecir desmedro a los tres a os de edad de distintos valores de demarcación de peso para edad y longitud para edad varía en función de la edad.
Breast-feeding practices in Mexico: results from the Second National Nutrition Survey 1999
González-Cossío Teresa,Moreno-Macías Hortensia,Rivera Juan A,Villalpando Salvador
Salud Pública de México , 2003,
Abstract: OBJECTIVE: To assess breast-feeding (BF) practices and determinants of exclusive BF (EBF) <4 and <6 months (mo) among women and infants <23 mo in the NNS-1999. MATERIAL AND METHODS: BF practices from the day and night before the interview were ascertained, and median duration estimated. Determinants of EBF<4 and <6 mo were analysed by logistic regression models for complex surveys. RESULTS: Prevalence of EBF<4 mo was 25.7%, and of <6 mo 20.3%. The overall rate of continued BF (second year) was 30.9%, median duration of BF 9 mo, and the national proportion of children ever breast-fed 92.3%. The probability (p) of EBF<4 mo was determined by infant age and sex, by maternal socio-economic level (SEL) and ethnicity, and by the interaction between infant sex and SEL. The pEBF<6 mo was determined by infant age and length, by maternal ethnicity, and employment. CONCLUSIONS: EBF rates and duration are low in Mexico and have improved only slightly in the last 20 y. Infant and maternal characteristics determine the pEBF. If improvements in infant health are a national priority, aggressive interventions to promote and protect BF are urgently needed in Mexico, as well as formal evaluation of current initiatives.
Alimentos industrializados en la dieta de los preescolares mexicanos
González-Castell,Dinorah; González-Cossío,Teresa; Barquera,Simón; Rivera,Juan A.;
Salud Pública de México , 2007, DOI: 10.1590/S0036-36342007000500005
Abstract: objective: to classify the foods consumed by mexican children 1-4 years in three food categories according to the preparation process and temporality: a) processed modern foods (pmf), b) processed traditional foods (ptf) and c) non-processed foods. material and methods: twenty-four-hour dietary recalls were collected from the national nutrition survey 1999 in children 1-4 years (n =1070). the contribution of each food category to the total energy, macronutrient and fiber intakes was analyzed. results: the contribution of pmf and ptf was as follows, respectively: energy: 17%, 31%; total protein: 14%, 25%; non-animal protein: 10%, 10%; animal protein: 17%, 34%; carbohydrates: 18%, 26%; fiber: 4%, 5%; total fat 15%, 41%; saturated fat 16%, 52%; and cholesterol 7%, 7%. conclusions: the contribution of pf to the diets of mexican children accounts for >39% of energy, total protein, animal protein, carbohydrates and fat. the authors recommend the participation of food industry to prevent malnutrition in children.
Multiple micronutrient supplementation and dietary energy intake in pregnant women
Flores,María de Lourdes; Neufeld,Lynnette M; González-Cossío,Teresa; Rivera,Juan; Martorell,Reynaldo; Ramakrishnan,Usha;
Salud Pública de México , 2007, DOI: 10.1590/S0036-36342007000300004
Abstract: objective: to compare dietary intake of women supplemented with multiple micronutrients (mm) or iron only during pregnancy. materials and methods: design: randomized, double-blind, controlled community-based trial. setting: one semi-urban community in central mexico. subjects: pregnant women identified before week 13 of pregnancy, willing to provide informed consent. interventions: women were randomly assigned to receive daily supplementation with mm or iron only from recruitment until delivery. supplements were delivered to the participants' home and compliance observed daily. dietary intake was assessed by repeat 24-hr recall. data were analyzed using non-parametric tests and multiple regression analysis to determine the impact of mm supplementation on dietary intake of energy and select micronutrients. results: during the third trimester, women in the mm group consumed more energy and iron from dietary sources than women in the iron only group. after adjustment for differences between the groups at baseline, women in the mm group consumed 111.3 kcal/day more (p<0.05) energy. the difference in iron intake was not significant after adjusting for the increase in energy intake. conclusions: women consuming mm supplements during pregnancy increased energy intake from dietary sources without a concurrent increase in micronutrient density. future studies should include measures of appetite and physical activity during pregnancy to determine the implications of additional energy intake for weight gain and retention.
Longitud y peso al nacer: el papel de la nutrición materna
Salud Pública de México , 1998, DOI: 10.1590/S0036-36341998000200003
Abstract: objective. to identify determinants of weight (bw) and length at birth (bl). material and methods. we studied 481 mother-newborn pairs in three mexico city hospitals. multiple regression models were developed to identify statistically significant predictors of bw and bl with respect to a predetermined biological model. independent variables included were: maternal anthropometry, age, smoking habits, and civil status, parental education, obstetric history, hypertension, and neonatal characteristics results. in the group with calf circumference (cc), height and head circumference below the median bw was 133, 92 and 96g lower (± 35 standard error -se-, p< 0.01) than the group above the median, adjusting for socioeconomic, obstetric history, and neonatal characteristics (nc). in the group below the median cc or height, bl was 5.8 or 6.2 mm (± 1.9 mm se, p< 0.01) respectivily, adjusting for obstetric history and nc. conclusions. results suggest that maternal anthropometry is the most important predictor of birth size and that predictors for bw and bl differ.
Acumulación de plomo en hueso y sus efectos en la salud
Sanín,Luz Helena; González-Cossío,Teresa; Romieu,Isabelle; Hernández-Avila,Mauricio;
Salud Pública de México , 1998, DOI: 10.1590/S0036-36341998000400009
Abstract: the adverse effects of lead have been known for long since the metal affects practically all organs and systems of the human body. recently, toxic effects have been reported in the cardiovascular and nervous systems at lead levels previously considered to be secure. the main lead storage site in the body is bone. the toxicologic significance of this fact has been clarified only recently. the present study analyzes the role of lead as an endogenous source of exposure, as a chronic exposure biomarker and as a target organ. recent advances to measure bone lead through fluorescent x-rays are discussed. additionally, the importance of bone lead from a public health perspective in places with a chronic history of exposure such as mexico city, and in some occupational environments is reviewed with particular attention placed on reproductive age women, who are potential lead sources for the fetus and lactating infant.
Acumulación de plomo en hueso y sus efectos en la salud
Sanín Luz Helena,González-Cossío Teresa,Romieu Isabelle,Hernández-Avila Mauricio
Salud Pública de México , 1998,
Abstract: Los efectos nocivos del plomo han sido conocidos desde tiempos antiguos por su amplia gama; este metal afecta prácticamente todos los órganos y sistemas del cuerpo humano. Recientemente se han documentado efectos tóxicos crónicos en los sistemas cardiovascular y nervioso, con niveles que antes se consideraban seguros. El sitio primario de almacenamiento de plomo en el organismo es el hueso, pero sólo hasta fechas recientes se ha clarificado la significancia toxicológica de este hecho. En este artículo se analiza el papel del plomo en hueso como fuente de exposición endógena, como biomarcador de exposición crónica y como tejido blanco. Se presentan además los avances recientes para la medición de plomo en hueso mediante los rayos X-fluorescentes (XRF). Finalmente se revisa la importancia, para la salud pública, de estudiar y medir el plomo en hueso en lugares con una historia de exposición crónica como la Ciudad de México y en los ambientes ocupacionales, especialmente como fuente remanente de exposición. Se analiza especialmente el caso de mujeres en edad reproductiva, quienes pueden convertirse en fuentes de exposición para el feto y para el ni o amamantado.
Nutritional status of indigenous children younger than five years of age in Mexico: results of a national probabilistic survey
Rivera Juan A,Monterrubio Eric A,González-Cossío Teresa,García-Feregrino Raquel
Salud Pública de México , 2003,
Abstract: OBJECTIVE: To compare the prevalence of undernutrition and anemia in indigenous and non-indigenous children <5 years of age at the national level, by region and by urban and rural areas, and to evaluate the degree to which the socioeconomic condition of the family predicts the differences. MATERIAL AND METHODS: A national probabilistic survey was conducted in Mexico in 1999. Indigenous families were identified as those in which at least one woman 12-49 years of age in the household spoke a native language. The prevalence of undernutrition (stunting, wasting and underweight) and anemia was compared between indigenous and non-indigenous children. Probability ratios (PR) were used to compare prevalences in indigenous and non-indigenous children adjusting for socioeconomic status (SES) of the family and for other covariates. RESULTS: The prevalences of stunting and underweight were greater in indigenous than in non-indigenous children. At the national level and in urban areas the prevalences were three times greater and in rural areas ~2 times greater (p<0.05). No differences were found in the prevalence of wasting (p>0.05). The prevalence of anemia in indigenous children was one third greater than in non-indigenous children at the national level (p<0.05) and was between 30 and 60% greater in urban areas and in the regions studied (p<0.05) but was not statistically significant (p>0.05) in rural areas. These differences were reduced to about half when adjusting for SES but remained significantly higher in indigenous children (p<0.05). CONCLUSIONS: Indigenous children have higher probabilities of stunting and underweight than non-indigenous children. The differences are larger in urban areas and in higher socioeconomic geographic regions and are explained mostly by socioeconomic factors. The overall difference in the probability of anemia is small, is higher only in urban relative to rural areas, and is explained to a lesser degree by socioeconomic factors. Policy and programs should be designed and implemented to reduce the dramatic differences in nutritional status between indigenous and non-indigenous children in Mexico.
Longitud y peso al nacer: el papel de la nutrición materna
Salud Pública de México , 1998,
Abstract: Objetivo. Identificar los factores determinantes del peso (PN) y la longitud al nacer (LN). Material y métodos. Se estudiaron 481 mujeres con sus neonatos, y se ajustaron modelos de regresión múltiple para PN y LN de acuerdo con un modelo biológico predeterminado. Resultados. El PN del grupo por debajo de la mediana de circunferencia de pantorrilla (CP), talla o circunferencia cefálica fue 133, 92 y 96 g menor (± 35 error estándar -EE-, p< 0.01), respectivamente, comparado con el grupo > de la mediana, ajustando por antecedentes obstétricos, socioeconómicos, el género y la edad gestacional del neonato. Estar por debajo de la mediana de CP o de talla se asoció con una LN 5.8 y 6.2 mm menor (± 1.9 mm EE p< 0.01), respectivamente, ajustando por antecedentes obstétricos, edad gestacional y género del bebé. Conclusiones. Los resultados sugieren que la antropometría materna es el predictor más importante del tama o al nacer, y que los predictores del PN y de la LN no son los mismos.
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