Birth Seasonality
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. A populational-based birth cohort study in a low-income urban area in Rio de Janeiro, Brazil: implementation and description of the characteristics of the study
Resumo: Estudos de coorte com um componente de vigilância epidemiológica podem contribuir para nosso conhecimento dos aspectos clínicos e dos padrões de transmissão de arboviroses. Este artigo descreve a implementação de um estudo de coorte de nascimento de base populacional que incluiu um componente de vigilância entomológica e desafios relacionado
Cad. Saúde Pública. Publicado em: 23/05/2019
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2. Ocorrência e Interações de Recém-nascidos e Filhotes de golfinho-rotador Stenella longirostris na Baía dos Golfinhos, Fernando de Noronha
Studies indicate that spinner dolphins use the Baía dos Golfinhos, in Fernando de Noronha Archipelago, for resting, reproduction, parental care and protection against shark attacks. The present study had the purpose of verifying the seasonality of spinner dolphin newborns and calves in relation to the months of the year and the pluviometric seasons (dry and
Publicado em: 2009
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3. Caracterização do ritmo de atividade motora durante a puberdade em sagüis (Callithrix jacchus) sob condições semi-naturais
Most of ontogenetic studies on circadian timing system have been developed on infants, adults and elderly. The puberty has not been a stage of life few studied, except for researches in human adolescents, that presents phase delay in sleep-wake cycle. However, few studies have focused on the basis of this circadian change due to methodological diffic
Publicado em: 2008
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4. Effects of seasonality at birth on asthma and pneumonia in the childhood and adult life / Efeito da sazonalidade do nascimento sobre a saúde e nutrição de crianças e adultos jovens
This study evaluated the effects of the trimester of birth and of ambient temperature in the first six months of life on hospitalizations due to asthma and pneumonia in preschool children and on the diagnosis of asthma in adult life in individuals from the 1982 Pelotas (Brazil) Birth Cohort. This population-based cohort included 5,914 live births, of whom 75
Publicado em: 2006
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5. Estudo prospectivo de rotavirus A em neonatos na cidade de Goiânia-Goiás
Rotavirus A is the main agent of viral gastroenteritis worldwide and has an important role in morbity and mortality from children up to five years old, in developing countries. This study aimed to detect the agent in children from the birth to one year old. It also aimed to analyze the positivity correlation about the primary infection age group, seasonality
Publicado em: 2006
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6. Daily birth numbers in Passo Fundo, South Brazil, 1997-1999: trends and periodicities
Between October 6, 1997 and April 30, 1999, 5011 births (mean: 8.76 per day) were registered in the city of Passo Fundo, South Brazil. The sequence of 572 daily birth numbers was not random (iteration test). Neyman distribution (m = ¥) showed the best fit. Clusters of days with higher birth numbers alternated with days with low numbers of births. Periodogra
Braz J Med Biol Res. Publicado em: 2002-08
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7. Seasonal variation in the prevalence of Down syndrome at birth: a review.
STUDY OBJECTIVE: Many studies on seasonality in Down syndrome (DS) have been performed and have come to different conclusions. It is suggested that seasonal variation in hormone production by the hypothalamus-pituitary-ovarian axis just before ovulation leads to seasonality in conception rates of DS. This study aimed to determine whether there is seasonal va
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8. Seasonality in twin birth rates, Denmark, 1936-84.
A study was made of seasonality in twin birth rate in Denmark between 1977 and 1984. We studied all twin births (N = 45,550) in all deliveries (N = 3,679,932) during that period. Statistical analysis using a simple harmonic sinusoidal model provided no evidence for seasonality. However, sequential polynomial analysis disclosed a significant fit to a fifth or
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9. Seasonality of birth in children with diabetes in Europe: multicentre cohort study
British Medical Journal.
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10. Decline and loss of birth seasonality in Spain: analysis of 33 421 731 births over 60 years
BMJ Group.
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11. Changing seasonality of birth--a possible environmental effect.
STUDY OBJECTIVE--Seasonality of birth was examined to determine whether this has changed over the last half century. DESIGN--Time-series analysis was carried out on retrospective data, both for the full 50 year period and for the five decades within that period. Although the primary objective was to investigate seasonality by fitting an appropriate model and
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12. Viruses, schizophrenia, and bipolar disorder.
The hypothesis that viruses or other infectious agents may cause schizophrenia or bipolar disorder dates to the 19th century but has recently been revived. It could explain many clinical, genetic, and epidemiologic aspects of these diseases, including the winter-spring birth seasonality, regional differences, urban birth, household crowding, having an older