RESUMO
OBJECTIVES: To assess the extent to which linear growth beyond the early years of life determines later cognitive development. STUDY DESIGN: We revisited children from New Delhi, India, who had participated in a randomized controlled trial 6 years before and assessed neurodevelopment using standardized and validated psychometric tools (Wechsler Intelligence Scale for Children, 4th edition; Crichton Vocabulary Scales; and Neuropsychological test battery). The associations of change in height for age z scores between early (12-36 months) and late (6-9 years) childhood with cognitive outcomes at 6-9 years of age were explored using linear regression models, after adjustment for appropriate confounders. RESULTS: Out of the 1000 North Indian children who were enrolled in the original study, 791 consented to participate in this follow-up. Height for age z scores in the first 2 years of life was significantly associated with both the Wechsler Intelligence Scale for Children-Crichton Vocabulary Scales (standardized ß coefficient [ß], 0.15; 95% CI, 0.08-0.23), and the Neuropsychological test battery-II z-score (ß, 0.09; 95% CI, 0.03-0.18) at 6-9 years of age. There were no significant associations between change in height for age z scores between early and later childhood and Wechsler Intelligence Scale for Children-Crichton Vocabulary Scales (ß, -0.03; 95% CI, -0.11 to 0.04) or Neuropsychological test battery-II z-scores (ß, -0.04; 95% CI, -0.12 to 0.06). CONCLUSIONS: Linear growth between early and late childhood is not associated with later cognitive outcomes. Our findings support the current practice of investing public health efforts to accelerate linear growth in the first 2-3 years of life.
Assuntos
Estatura/fisiologia , Desenvolvimento Infantil/fisiologia , Cognição/fisiologia , Criança , Feminino , Seguimentos , Humanos , Índia , Masculino , Fatores Socioeconômicos , Vocabulário , Escalas de WechslerRESUMO
Apesar de seus benefícios estabelecidos, a amamentação não é mais uma norma em muitas comunidades. Os determinantes multifatoriais da amamentação necessitam de medidas de suporte em diversos níveis, de legislações e políticas a atitudes e valores sociais, condições de trabalho e emprego para mulheres, e serviços de saúde para possibilitar que as mulheres amamentem. Quando intervenções relevantes são oferecidas adequadamente, as práticas de amamentação são responsivas e podem melhorar rapidamente. Os melhores resultados são obtidos quando intervenções são implementadas concomitantemente por diversos canais. A propaganda de substitutos ao leite materno afeta negativamente a amamentação: as vendas em todo o mundo em 2014 de 44,8 bilhões de dólares demonstram a grande ambição competitiva da indústria com a alimentação infantil. Não amamentar está associado com menor inteligência e perdas econômicas de aproximadamente 302 bilhões de dólares anualmente ou 0,49% do produto nacional bruto mundial. A amamentação fornece, em curto e longo prazos, vantagens para a saúde, econômicas e ambientais para as crianças, mulheres e para a sociedade. Para alcançar estes ganhos, suporte político e investimento financeiro são necessários para proteger, promover e dar suporte à amamentação.
Assuntos
Humanos , Recém-Nascido , Lactente , Aleitamento Materno , Política de Saúde , Nutrição da Criança , Estilo de Vida SaudávelRESUMO
To determine the association of different feeding patterns for infants (exclusive breastfeeding, predominant breastfeeding, partial breastfeeding and no breastfeeding) with mortality and hospital admissions during the first half of infancy...
Assuntos
Masculino , Feminino , Humanos , Recém-Nascido , Lactente , Aleitamento Materno , Comportamento Alimentar , Nutrição do Lactente , Mortalidade InfantilRESUMO
OBJECTIVE: To compare the estimated prevalence of malnutrition using the World Health Organization's (WHO) child growth standards versus the National Center for Health Statistics' (NCHS) growth reference, to examine the relationship between exclusive breastfeeding and malnutrition, and to determine the sensitivity and specificity of nutritional status indicators for predicting death during infancy. METHODS: A secondary analysis of data on 9424 mother-infant pairs in Ghana, India and Peru was conducted. Mothers and infants were enrolled in a trial of vitamin A supplementation during which the infants' weight, length and feeding practices were assessed regularly. Malnutrition indicators were determined using WHO and NCHS growth standards. FINDINGS: The prevalence of stunting, wasting and underweight in infants aged < 6 months was higher with WHO than NCHS standards. However, the prevalence of underweight in infants aged 6-12 months was much lower with WHO standards. The duration of exclusive breastfeeding was not associated with malnutrition in the first 6 months of life. In infants aged < 6 months, severe underweight at the first immunization visit as determined using WHO standards had the highest sensitivity (70.2%) and specificity (85.8%) for predicting mortality in India. No indicator was a good predictor in Ghana or Peru. In infants aged 6-12 months, underweight at 6 months had the highest sensitivity and specificity for predicting mortality in Ghana (37.0% and 82.2%, respectively) and Peru (33.3% and 97.9% respectively), while wasting was the best predictor in India (sensitivity: 54.6%; specificity: 85.5%). CONCLUSION: Malnutrition indicators determined using WHO standards were better predictors of mortality than those determined using NCHS standards. No association was found between breastfeeding duration and malnutrition at 6 months. Use of WHO child growth standards highlighted the importance of malnutrition in the first 6 months of life.
Assuntos
Aleitamento Materno , Desenvolvimento Infantil , Transtornos da Nutrição do Lactente/complicações , Transtornos da Nutrição do Lactente/mortalidade , Organização Mundial da Saúde , Peso Corporal , Feminino , Gana/epidemiologia , Humanos , Índia/epidemiologia , Lactente , Recém-Nascido , Masculino , Mães , Peru/epidemiologia , Prevalência , Padrões de Referência , Fatores Socioeconômicos , Fatores de TempoRESUMO
OBJECTIVE: To determine the association of different feeding patterns for infants (exclusive breastfeeding, predominant breastfeeding, partial breastfeeding and no breastfeeding) with mortality and hospital admissions during the first half of infancy. METHODS: This paper is based on a secondary analysis of data from a multicentre randomized controlled trial on immunization-linked vitamin A supplementation. Altogether, 9424 infants and their mothers (2919 in Ghana, 4000 in India and 2505 in Peru) were enrolled when infants were 18-42 days old in two urban slums in New Delhi, India, a periurban shanty town in Lima, Peru, and 37 villages in the Kintampo district of Ghana. Mother-infant pairs were visited at home every 4 weeks from the time the infant received the first dose of oral polio vaccine and diphtheria-pertussis-tetanus at the age of 6 weeks in Ghana and India and at the age of 10 weeks in Peru. At each visit, mothers were queried about what they had offered their infant to eat or drink during the past week. Information was also collected on hospital admissions and deaths occurring between the ages of 6 weeks and 6 months. The main outcome measures were all-cause mortality, diarrhoea-specific mortality, mortality caused by acute lower respiratory infections, and hospital admissions. FINDINGS: There was no significant difference in the risk of death between children who were exclusively breastfed and those who were predominantly breastfed (adjusted hazard ratio (HR) = 1.46; 95% confidence interval (CI) = 0.75-2.86). Non-breastfed infants had a higher risk of dying when compared with those who had been predominantly breastfed (HR = 10.5; 95% CI = 5.0-22.0; P < 0.001) as did partially breastfed infants (HR = 2.46; 95% CI = 1.44-4.18; P = 0.001). CONCLUSION: There are two major implications of these findings. First, the extremely high risks of infant mortality associated with not being breastfed need to be taken into account when informing HIV-infected mothers about options for feeding their infants. Second, our finding that the risks of death are similar for infants who are predominantly breastfed and those who are exclusively breastfed suggests that in settings where rates of predominant breastfeeding are already high, promotion efforts should focus on sustaining these high rates rather than on attempting to achieve a shift from predominant breastfeeding to exclusive breastfeeding.
Assuntos
Alimentação com Mamadeira/estatística & dados numéricos , Aleitamento Materno/estatística & dados numéricos , Comportamento Alimentar , Hospitalização/estatística & dados numéricos , Mortalidade Infantil/tendências , Fenômenos Fisiológicos da Nutrição do Lactente , Feminino , Gana/epidemiologia , Humanos , Índia/epidemiologia , Lactente , Recém-Nascido , Masculino , Estudos Multicêntricos como Assunto , Peru/epidemiologia , Áreas de Pobreza , Modelos de Riscos Proporcionais , Estudos Prospectivos , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores de RiscoRESUMO
OBJECTIVE: To evaluate the effect of zinc supplementation on mental and psychomotor scores in children aged 12 to 18 months. STUDY DESIGN: In this double-blind, randomized, placebo-controlled trial, children aged 6 to 30 months received daily elemental zinc (10 mg for infants and 20 mg for others) or placebo for 4 months. Bayley Scales of Infant Development II were used for development assessment in the 12- to 18-month subgroup at enrollment and the end of the study. RESULTS: At the end of the study, the adjusted mean mental ( P = .36) and psychomotor ( P = .28) index scores were similar in the intervention and control groups. In a multivariate model, the baseline mental development index score was positively associated with the mother's schooling, the child's height for age, packed cell volumes, hospital birth, and attendance at a day care center, and was negatively associated with the child's age. Breastfeeding, the child's weight for height, and packed cell volumes were positively associated with the baseline psychomotor index score. CONCLUSION: Zinc supplementation did not affect the mental or psychomotor development index scores in a setting in which zinc deficiency is common.
Assuntos
Suplementos Nutricionais , Testes de Inteligência , Desempenho Psicomotor , Zinco/deficiência , Zinco/uso terapêutico , Método Duplo-Cego , Feminino , Humanos , Lactente , MasculinoRESUMO
The objective of the Motor Development Study was to describe the acquisition of selected gross motor milestones among affluent children growing up in different cultural settings. This study was conducted in Ghana, India, Norway, Oman, and the United States as part of the longitudinal component of the World Health Organization (WHO) Multicentre Growth Reference Study (MGRS). Infants were followed from the age of four months until they could walk independently. Six milestones that are fundamental to acquiring self-sufficient erect locomotion and are simple to evaluate were assessed: sitting without support, hands-and-knees crawling, standing with assistance, walking with assistance, standing alone, and walking alone. The information was collected by both the children's caregivers and trained MGRS fieldworkers. The caregivers assessed and recorded the dates when the milestones were achieved for the first time according to established criteria. Using standardized procedures, the fieldworkers independently assessed the motor performance of the children and checked parental recording at home visits. To ensure standardized data collection, the sites conducted regular standardization sessions. Data collection and data quality control took place simultaneously. Data verification and cleaning were performed until all queries had been satisfactorily resolved.
Assuntos
Desenvolvimento Infantil , Desempenho Psicomotor , Brasil , Criança , Desenvolvimento Infantil/fisiologia , Pré-Escolar , Estudos Transversais , Seguimentos , Gana , Humanos , Índia , Lactente , Recém-Nascido , Estudos Longitudinais , Noruega , Omã , Desempenho Psicomotor/fisiologia , Controle de Qualidade , Padrões de Referência , Estados Unidos , Organização Mundial da SaúdeRESUMO
Vitamin A supplementation of lactating mothers and of infants at the time of diphtheria-pertussis-tetanus (DPT) and oral polio vaccine (OPV) immunizations have both been suggested as measures to prevent deficiency among infants. This multicenter randomized, double-blind, placebo-controlled trial was conducted in Ghana, India and Peru to determine the effect of maternal vitamin A supplementation on breast milk retinol and of maternal and infant supplementation on infant vitamin A status. Mothers in the intervention group received 60 mg vitamin A (as retinol palmitate) at 18-42 d postpartum; their infants were given 7.5 mg three times, i.e., at 6, 10 and 14 wk of age with DPT and OPV immunizations. Mothers and infants in the comparison group received a placebo. Maternal supplementation resulted in higher breast milk retinol at 2 mo postpartum [difference in means 7.1, 95% confidence interval (CI), 3.4, 10.8 nmol/g fat] and lower proportion of mothers with breast milk retinol < or = 28 nmol/g fat (15.2 vs. 26.6%, 95% CI of difference -16.6, -4.1%). At 6 and 9 mo, maternal supplementation did not affect breast milk retinol or the proportion of mothers with low breast milk retinol. Vitamin A supplementation of the mothers and their infants reduced the proportion of infants with serum retinol < or = 0.7 micro mol/L (30.4 vs. 37%, 95% CI of difference -13.7, 0.6%) and that with low vitamin A stores as indicated by the modified relative dose response (MRDR) > 0.06 (44.2 vs. 52.9%, 95% CI of difference -16.6, -0.9%) at 6 mo. Supplementation had no effect at 9 mo. The beneficial effect of supplementation on breast milk retinol and infants' vitamin A status varied by site. It was greatest in India followed by Ghana and Peru. At the doses used, maternal supplementation improved breast milk retinol status at 2 mo (P < 0.001) and maternal and infant supplementation modestly increased (P = 0.03) infant vitamin A status at 6 mo of age. Additional strategies to improve vitamin A status of 6- to 9-mo-old infants must be considered.
Assuntos
Leite Humano/química , Estado Nutricional , Período Pós-Parto , Deficiência de Vitamina A/prevenção & controle , Vitamina A/administração & dosagem , Vitamina A/análise , Adulto , Envelhecimento , Suplementos Nutricionais , Vacina contra Difteria, Tétano e Coqueluche/administração & dosagem , Método Duplo-Cego , Feminino , Gana , Humanos , Programas de Imunização , Índia , Lactente , Recém-Nascido , Masculino , Peru , Placebos , Vacina Antipólio Oral/administração & dosagem , Vitamina A/sangueRESUMO
OBJECTIVE: To determine the efficacy of zinc-fortified oral rehydration salts solution (ORS) in comparison to ORS without zinc in 6- to 35-month-old urban children with acute diarrhea not sick enough to be hospitalized. DESIGN: Double-blind, randomized, controlled trial. METHODS: Children (n = 1219) with acute diarrhea were randomly assigned to one of 3 groups. The first group received a zinc syrup (15 mg zinc to 6- to 11-month-old children and 30 mg to 12- to 35-month-old children), the second group received zinc premixed with ORS (40 mg/L), and the control children received ORS only. Households were visited twice weekly until recovery. RESULTS: The total number of stools was lower in the zinc-ORS group (rate ratio, 0.83; 95% CI, 0.71-0.96), as was the proportion of children with watery stools (odds ratio, 0.61; 95% CI, 0.39-0.95), compared with the control group; there was no significant effect on diarrheal duration. ORS intake and proportion of children with vomiting were not significantly different between the zinc-ORS and control groups. The zinc syrup group had lower diarrheal duration (relative hazards, 0.89; 95% CI, 0.80-0.99) and total stools (rate ratio, 0.73; 95% CI, 0.70-0.77) than control children. CONCLUSIONS: Zinc-ORS was moderately efficacious in reducing the severity of acute diarrhea without increasing vomiting or reducing ORS intake.