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Search Results: 1 - 10 of 41259 matches for " Hernández-Avila Mauricio "
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Presentación
Hernández-Avila Mauricio
Salud Pública de México , 2003,
Abstract:
Abstract
HERNáNDEZ-AVILA MAURICIO
Salud Pública de México , 1997,
Abstract:
Abstract
HERNáNDEZ-AVILA MAURICIO
Salud Pública de México , 1997,
Abstract:
EDITORIAL
HERNáNDEZ-AVILA MAURICIO
Salud Pública de México , 1998,
Abstract:
Validity and reproducibility of a food frequency questionnaire to assess dietary intake of women living in Mexico City
HERNáNDEZ-AVILA MAURICIO,ROMIEU ISABELLE,PARRA SOCORRO,HERNáNDEZ-AVILA JUAN
Salud Pública de México , 1998,
Abstract: Objective. To assess the reproducibility and validity of a 116 item semi-quantitative food frequency questionnaire (FFQ), designed to assess the relation between dietary intake and chronic diseases. Material and methods. To test the reproducibility of the FFQ questionnaire, the FFQ was administered twice to 134 women residing in Mexico City at an interval of approximately one year; to assess the validity we compared results obtained by the FFQs with those obtained by four 4-day 24-hour recalls at three month intervals. Validity and reproducibility were evaluated using regression analysis and Pearson and intraclass correlation coefficients of log-e and calorie-adjusted nutrient scores. Results. Mean values for intake of most nutrients assessed by the two food frequency questionnaires were similar. However, means for the 24-hr recall were significantly lower. Intraclass correlation coefficients for nutrient intakes, assessed by questionnaires, administered one year apart, ranged from 0.38 for cholesterol to 0.54 for crude fiber. Correlation coefficients between energy-adjusted nutrient intakes, measured by diet recalls, and the first FFQ ranged from 0.12 for polyunsaturated fatty acids to 0.67 for saturated fatty acids. Regression coefficients between 24-hr recall and FFQ,s were all significant were significant for all nutrients, except for polyunsaturated fat, folic acid, vitamin E and Zinc. Conclusions. These data indicate that this semi-quantitative FFQ is reproducible and provides a useful estimate by which to categorize individuals by level of past nutrient intake. However, its application outside Mexico City or in different age and gender populations will require additional modifications and validation efforts.
La epidemia de tabaquismo: Epidemiología, factores de riesgo y medidas de prevención
Lazcano-Ponce Eduardo C,Hernández-Avila Mauricio
Salud Pública de México , 2002,
Abstract:
Validity and reproducibility of a food frequency questionnaire to assess dietary intake of women living in Mexico City
HERNáNDEZ-AVILA,MAURICIO; ROMIEU,ISABELLE; PARRA,SOCORRO; HERNáNDEZ-AVILA,JUAN; MADRIGAL,HERLINDA; WILLETT,WALTER;
Salud Pública de México , 1998, DOI: 10.1590/S0036-36341998000200005
Abstract: objective. to assess the reproducibility and validity of a 116 item semi-quantitative food frequency questionnaire (ffq), designed to assess the relation between dietary intake and chronic diseases. material and methods. to test the reproducibility of the ffq questionnaire, the ffq was administered twice to 134 women residing in mexico city at an interval of approximately one year; to assess the validity we compared results obtained by the ffqs with those obtained by four 4-day 24-hour recalls at three month intervals. validity and reproducibility were evaluated using regression analysis and pearson and intraclass correlation coefficients of log-e and calorie-adjusted nutrient scores. results. mean values for intake of most nutrients assessed by the two food frequency questionnaires were similar. however, means for the 24-hr recall were significantly lower. intraclass correlation coefficients for nutrient intakes, assessed by questionnaires, administered one year apart, ranged from 0.38 for cholesterol to 0.54 for crude fiber. correlation coefficients between energy-adjusted nutrient intakes, measured by diet recalls, and the first ffq ranged from 0.12 for polyunsaturated fatty acids to 0.67 for saturated fatty acids. regression coefficients between 24-hr recall and ffq,s were all significant were significant for all nutrients, except for polyunsaturated fat, folic acid, vitamin e and zinc. conclusions. these data indicate that this semi-quantitative ffq is reproducible and provides a useful estimate by which to categorize individuals by level of past nutrient intake. however, its application outside mexico city or in different age and gender populations will require additional modifications and validation efforts.
El consumo de tabaco y alcohol en jóvenes de zonas urbanas marginadas de México: un análisis de decisiones relacionadas
Urquieta,José Edmundo; Hernández-Avila,Mauricio; Hernández,Bernardo;
Salud Pública de México , 2006, DOI: 10.1590/S0036-36342006000700005
Abstract: objectives: the purpose of this study was to: identify the economic and sociodemographic factors that influence the decisions made by youth in poor urban areas in mexico to consume tobacco and alcohol; test the hypothesis that both decisions are mutually related and; demonstrate the influence of social interactions within the household on the consumption of both substances. material and methods: this cross-sectional study analyzed information from the urban household evaluation survey (encelurb 2002, per its acronym in spanish), which constitutes the baseline measurement for a follow-up survey to evaluate the impact of a social program in urban areas of mexico. the encelurb 2002 is a multi-issue survey that collected information from 17 207 households, including data on alcohol and tobacco consumption from 15 181 youth ranging in age from 12 to 21 years old. the estimation method used was a bivariate probit model. the entire sample was analyzed as well as the subsample of youth 12 to 15 years old. results: the joint estimation of the two propensities for consumption confirmed that both decisions are closely related. the presence of older youth who smoked or consumed alcohol was positively and significantly associated with the probability of tobacco and alcohol use among youth 12 to 15 years old. the probability of consuming both addictive substances increased with age, principally among men. on the other hand, youth who lived with both parents had lower probabilities of tobacco and alcohol consumption than those living without any parent. conclusions: the results indicate that alcohol and tobacco consumption decisions are mutually related, which allows for better identification of family and individual factors associated with the propensity by youth for smoking and consuming alcohol. these results contribute to the scarce amount of information in mexico indicating the need to analyze the phenomena of addictions with regard to the consumption of various substances.
Gender-related family head schooling and Aedes aegypti larval breeding risk in Southern Mexico
Danis-Lozano,Rogelio; Rodríguez,Mario H; Hernández-Avila,Mauricio;
Salud Pública de México , 2002, DOI: 10.1590/S0036-36342002000300007
Abstract: objective. to investigate if family head genre-associated education is related to the risk of domiciliary aedes aegypti larval breeding in a dengue-endemic village of southern mexico. material and methods. a family head was considered to have a low education level if he/she had not completed elementary school. to estimate larval breeding risk within each household, a three-category maya index was constructed using a weighted estimation of controllable and disposable domestic water containers. a socio-economic index was constructed based on household construction characteristics. results. low-level education of either family head was associated to higher larval breeding risk. households with low-educated mothers had more larval breeding containers. these associations persisted after adjusting for household socio-economic level. conclusions. these results indicate that households with female family heads with low education levels accumulate more containers that favor ae. aegypti breeding, and that education campaigns for dengue control should be addressed to this part of the population.
Recommendations for cervical cancer screening programs in developing countries: the need for equity and technological development
Lazcano-Ponce,Eduardo; Alonso,Patricia; Ruiz-Moreno,José Antonio; Hernández-Avila,Mauricio;
Salud Pública de México , 2003, DOI: 10.1590/S0036-36342003000900020
Abstract: the cervical cancer screening programs (ccsp) have not been very efficient in the developing countries. this explains the need to foster changes on policies, standards, quality control mechanisms, evaluation and integration of new screening alternatives considered as low and high cost, as well as to regulate colposcopy practices and the foundation of hpv laboratories. cervical cancer (cc) is a disease most frequently found in poverty-stricken communities and reflecting a problem of equity at both levels gender and regional, and this, is not only due to social and economic development inequalities, but to the infrastructure and human resources necessary for primary care. for this reason, the ccsp program must be restructured, a) to primarily address unprivileged rural and urban areas; b) to foster actions aimed at ensuring extensive coverage as well as a similar quality of that coverage in every region; c) to use screening strategies in keeping with the availability of health care services. in countries with a great regional heterogeneity, a variety of screening procedures must be regulated and standardized, including a combination of assisted visual inspection, cervical cytology and hpv detection; d) regional community intervention must be set up to assess the effectiveness of using hpv detection as an strategy in addition to cervical cytology (pap smear); e) the practice of colposcopy must be regulated to prevent the use of it in healthy women at a population level, thus preventing unnecessary diagnosis and treatment which not only are expensive but also causes unnecessary anxiety to women at risk; f) the operation of those clinical laboratories using hpv as a detection strategy must likewise be accredited and regulated and g) the ccsp program for assuring health care quality should meet the expectations of its beneficiaries, and increase the knowledge in cervical cancer related matters. finally, though a variety of clinical tests on prophylactic and therapeutic va
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