Maternal factors associated with prematurity in public maternity hospitals at the Brazilian Western Amazon.

OBJECTIVE: To analyse maternal factors associated with prematurity in public maternity hospitals. DESIGN: Retrospective unmatched case-control study on two public maternity hospitals in the State of Acre, Brazil. SETTING AND PARTICIPANTS: A sample of 341 newborn infants of premature birth (< 37 weeks; case group) and 388 newborn infants of term delivery (≥ 37 weeks; control group). METHODS: A validated instrument was used for interviews, and information was collected from hospital records. The variables were divided into five blocks: (1) maternal sociodemographic and economic characteristics, (2) maternal biological and reproductive characteristics, (3) maternal habits, (4) pregnancy complications, and (5) neonatal characteristics. The hierarchical analysis was performed using multiple logistic regression. RESULTS: The risk factors associated with premature birth were as follows: newborn infants of mothers who were born premature (p = 0.005), with low BMI (p = 0.006), history of a previous preterm child (p<0.003), who had stress (p = 0.020) and physical injury during pregnancy (p = 0.025), with quality of prenatal care classified as inadequate II (p = 0.001), which presented abnormal amniotic fluid volume (p<0.001), pre-eclampsia/eclampsia (p<0.001), bleeding (p = 0.013) and hospitalization during pregnancy (p = 0.001). CONCLUSION: The variables that were associated with premature birth were mother born preterm, low BMI, previous premature child, stress and physical injury during pregnancy, prenatal care inadequate II, bleeding, abnormal amniotic fluid volume, pre-eclampsia/eclampsia and hospitalization during pregnancy. It is important to properly perform prenatal care, having a multidisciplinary approach as support, with the objective of keep up with changes in nutritional classification and monitoring of adverse clinical conditions.

Prática de atividade física e perfil nutricional de mães com filhos de até 10 anos de idade residentes na área urbana do município de Santos-SP / Physical activity and nutritional status of mothers with children under 10 years old residents of an urban area in Santos, Brazil

In this study, we aimed to describe the physical activity level and nutritional status of mothers with children under 10 years old living in different socioeconomic areas in the municipality of Santos, Sao Paulo state, Brazil. To this end, we used a cross-sectional design and collected data on physical activity level, means of transportation, anthropometric measures, and socioeconomic status through home-based interviews in a sample of 538 mothers. The physical activity level of individuals was assessed by a short version of the International Physical Activity Question¬naire (IPAQ). We used the Chi-square ande Kruskal-Wallis tests to assess the difference in physical activity level among various socioeconomic areas of the city and evaluate the association between this outcome and the nutritional status of women. We found a high prevalence of women with little activity (43.7%) and a high frequency of women who do not practice leisure-time physical activity (79.2%). When practice occurs, the most common exercises are walking (10.4%) and working out (9.1%). We also found a high prevalence of excess body fat (74.3%) and overweight (52%) among this population. A higher prevalence of leisure-time physical activity was found among participants from high-income areas. Thus, we recommend that new strategies to promote physical activity should take into account socioeconomic inequalities and cultural differences that can affect the physical activity level of the population.

Describir la práctica de actividad física y el perfil nutricional de la población de madres con hijos de hasta 10 años de edad, residentes en diferentes regiones socioeconómicas del municipio de Santos. El estudio tuvo un diseño transversal y los datos se recogieron por medio de encuestas domiciliarias con una muestra de 538 madres. Se preguntó sobre nivel de actividad física, medios de transporte utilizados, medidas antropométricas y datos socioeconómicos. El nivel de actividad física se evaluó por medio del instrumento International Physical Activity Questionnaire (IPAQ ? versión breve). Se evaluó la diferencia en el nivel de actividad física entre las regiones de la ciudad y se asoció dicha variable con el estado nutricional de las mujeres, por medio de los tests de Kruskal-Wallis y Chi-cuadrado. Se encontró una alta prevalencia de mujeres poco activas (43,7%) y una alta frecuencia de mujeres que no practican actividad física en su tiempo libre (79,2%). Las actividades de tiempo libre más frecuentes fueron caminatas (10,4%) y musculación (9,1%). También se encontró una alta prevalencia en el exceso de grasa corporal (74,3%) y sobrepeso (52%) en esta población. Se encontraron diferencias en el perfil de actividad física de la población, dependiendo, éstas, de la región de residencia. Se pudo verificar una mayor prevalencia de actividad física en el tiempo libre entre los residentes de las regiones de mayor nivel socioeconómico. Por lo tanto, se recomienda que las nuevas estrategias de incentivo a la actividad física tengan en cuenta las desigualdades socioeconómicas y culturales que influyen en el nivel de actividad física.

Descrever a prática de atividade física e o perfil nutricional da população de mães com filhos de até 10 anos de idade, residentes nas diferentes regiões socioeconômicas do município de Santos-SP. O estudo teve delineamento transversal e os dados foram coletados por meio de entrevistas domiciliares com uma amostra de 538 mães. Foram investigadas questões sobre o nível de atividade física, os meios de transporte utilizados, as medidas antropométricas e os dados socioeconômicos. O nível de atividade física foi avaliado por meio do instrumento International Physical Activity Questionnaire (IPAQ - versão curta). Foi avaliada a diferença no nível de atividade física entre as regiões da cidade e a associação dessa variável com o estado nutricional das mulheres, por meio dos testes de Kruskal-Wallis e Qui-quadrado. Foi observada alta prevalência de mulheres pouco ativas (43,7%) e alta frequência de inatividade física no lazer (79,2%). As atividades de lazer mais praticadas foram caminhada (10,4%) e musculação (9,1%). Encontrou-se também uma alta prevalência de excesso de gordura corporal (74,3%) e excesso de peso (52%) nesta população. Diferenças no perfil de atividade física da população apareceram de acordo com a região de moradia. Foi possível verificar maior prevalência de atividade física no domínio do lazer entre os residentes das regiões de maior nível socioeconômico. Recomenda-se que novas estratégias de incentivo à atividade física considerem as disparidades socioeconômicas e culturais que influenciam o nível de atividade física.

Profiles of maternal care observed in a group of Brazilian mothers: an exploratory study.

The aim of this study is to characterize profiles of maternal care in a sample of Brazilian mothers, using a cultural-biological perspective. Participants were 315 women who had at least one child younger than six years-old. They were selected from six Brazilian states. In each state, two groups of mothers were studied, one from the capital and one from a small city. They were interviewed and answered scales on allocentrism, social support, adult attachment, and practices of childcare. Mothers' characteristics, the type of context (capital vs. small city), and reported childcare practices were used in a Tree analysis. A Correspondence analysis was performed using the four clusters obtained and mothers' answers regarding their youngest child. Univariate GLM analyses were performed to compare mothers in the four clusters in terms of their scores on the different scales. Four maternal profiles presenting distinctive patterns of association between mothers' characteristics and care practices displayed to the youngest child were identified. We conclude that maternal care is a multi-determined phenomenon and that the method employed in this study can give insights into how the combination of diverse social-biological factors can result in a set of childcare practices.

Maternal and infant characteristics associated with prone and lateral infant sleep positioning in Washington state, 1996-2002.

OBJECTIVE: To identify factors predictive of either lateral or prone infant sleep positioning. STUDY DESIGN: We used data for 11340 mother-infant pairs from the Pregnancy Risk Assessment Monitoring System for infants born in Washington State, 1996 to 2002. We used predictive modeling to identify statistically significant (P < .05) predictors of lateral and prone sleep positioning. RESULTS: Factors associated with both high-risk sleep positions included infant's year of birth, maternal race and ethnicity, maternal county of residence, and maternal parity. Mother's being US-born (versus foreign-born) and male infant sex were predictive only of prone sleep positioning. Having Medicaid as primary insurance, receipt of government benefits, low infant gestational age, and low birth weight were predictive only of lateral sleep positioning. CONCLUSIONS: Factors predictive of either high-risk sleep position should be considered when devising public health intervention strategies for the prevention of SIDS.

Prevalence and predictors of home and automobile smoking bans and child environmental tobacco smoke exposure: a cross-sectional study of U.S.- and Mexico-born Hispanic women with young children.

BACKGROUND: Detrimental effects of environmental tobacco smoke (ETS) exposure on child health are well documented. Because young children's primary exposure to ETS occurs in homes and automobiles, voluntary smoking restrictions can substantially reduce exposure. We assessed the prevalence of home and automobile smoking bans among U.S.- and Mexico-born Hispanics in the southwestern United States, and examined the influence of mother's country of birth and smoking practices on voluntary smoking bans and on child ETS exposure. METHODS: U.S.- and Mexico-born Hispanic mothers of children aged 2 through 12 years were systematically sampled from health clinics in Albuquerque, New Mexico. In-person interviews were conducted with 269 mothers (75.4% response rate) to obtain information on main study outcomes (complete versus no/partial home and automobile smoking bans; child room and automobile ETS exposure) and risk factors (mother's country of birth, maternal and household smoking behaviors). Data were analyzed with chi square tests and logistic regression models. RESULTS: Three-fourths (74-77%) of U.S.-born and 90-95% of Mexico-born mothers reported complete automobile and home smoking bans. In multivariate analyses, mother's U.S nativity, mother's current smoking, and presence of other adult smokers in the home were associated with significantly increased odds of not having a complete home or automobile smoking ban. Mother's smoking was associated with child ETS exposure both indoors (odds ratio [OR] = 3.31) and in automobiles (OR = 2.97). Children of U.S.-born mothers had increased odds of exposure to ETS indoors (OR = 3.24; 95% confidence interval [CI]: 1.37-7.69), but not in automobiles. Having complete smoking bans was associated with substantially reduced odds of child ETS exposure both indoors (OR = 0.10; 95% CI: 0.04-0.27) and in automobiles (OR = 0.14; 95% CI: 0.05-0.36). CONCLUSION: This study of Hispanic mothers in the southwestern U.S. indicates that there are substantial differences between U.S.- and Mexico-born mothers in the prevalence of home and automobile smoking bans, and resulting child ETS exposure. Tobacco interventions to increase smoke-free environments for U.S. Hispanic children should focus on both home and automobile smoking practices, especially among U.S.-born mothers, and utilize strategies that impact smoking practices of all household members.

Determinación de puntos atípicos en estudios longitudinales: mediante el análisis biplot de datos sin transformaciones previas / Determination atypicals points in longitudinal studies: using biplot analysis to non transformed

En este trabajo se propone un procedimiento basado en la aplicación de la técnica Biplot a datos sin transformaciones previas, el cual se complementa con un índice que permite detectar puntos atípicos en un estudio longitudinal, y simultáneamente explicar su comportamiento. El método es aplicado al estudio de los valores de triglicéridos séricos en una submuestra del Estudio Longitudinal de Caracas, formada por varones adolescentes entre 12 y 16 años. Los resultados permitieron distinguir individuos cuyos valores de triglicéridos estaban muy por encima, o por debajo, del valor promedio de su grupo a lo largo de casi todos los períodos. Además, fue posible identificar individuos cuyos perfiles no guardan paralelismo con respecto al patrón promedio de subgrupo, lográndose también una aproximación a la forma de evolución temporal del fenómeno

Assessment of risk of perinatal death in Jamaica.

Data from the Jamaican Perinatal Mortality Survey had been used to create a statistical model using logistic regression. From this a simple additive scoring system to predict perinatal death was devised and tested on the 2 cohort months of the study. The score had a theoretical range of 0-28 points, with the higher the score, the greater the likelihood of a perinatal death. For a cut-point of 7, sensitivity was 43% and specificity 84%. A cut-point of 8 resulted in 27% sensitivity and 94% specificity. Higher cut-points resulted in much reduced sensitivity but enhanced specificity (e.g. cut-point 10: 11% sensitivity, 99% specificity). However, it is likely that these estimates are optimistically high, and to achieve unbiased estimates of sensitivity and specificity the score needs to be tested on a sample of the population from which it was not derived before implementation takes place. Meanwhile, the cut-off level for implementation will depend on appropriate resources available.

Assessment of risk of perinatal death in Jamaica

Data from the Jamaican Perinatal Mortality Survey had been used to create a statistical model using logistic regression. From this a simple additive scoring system to predict perinatal death was devised and tested on the 2 cohort months of the study. The score had a theoretical range of 0-28 points, with the higher the score, the greater the likelihood of a perinatal death. For a cut-point of 7 sensitivity was 43 percent and specificity 84 percent. A cut-point of 8 resulted in 27 percent sensitivity and 94 percent specificity. Higher cut-points resulted in much reduced sensitivity but enhanced specificity (e.g. cut-point 10: 11 percent sensitivity, 99 percent specificity). However, it is likely that these estimates are optimistically high, and to achieve unbiased estimates of sensitivity and specificity the score needs to be tested on a sample of the population from which it was not derived before implementation takes place. Meanwhile, the cut-off level for implementation will depend on appropriate resources available (Summary)