Teenage pregnancy and adverse birth outcomes: a large population based retrospective cohort study

Chen, Xi-Kuan; Wen, Shi Wu; Fleming, Nathalie; Demissie, Kitaw; Rhoads, George G.; Walker, Mark

doi:10.1093/ije/dyl284

Cited by 746 publications

(738 citation statements)

References 32 publications

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“…In the United States, there has been a 24.0% reduction in the rate of pregnancies among women aged ten to 19 years since 1990, with a rate of 8.7% being reached between 1995 and 2000. 8 The occurrence of unfavorable outcomes among adolescent mothers is attributed to biological immaturity, especially regarding low weight 21 and preterm birth. 7 Recent data from the United Kingdom indicate that the rate of small for gestational age babies born to adolescent mothers who were still growing did not differ from that of adult women and that these mothers gave birth to heavier babies and to a greater proportion of large for gestational age babies.…”

Section: Discussionmentioning

confidence: 99%

Is adolescent pregnancy a risk factor for low birth weight?

et al. 2013

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OBJECTIVE:The objective of this study was to evaluate whether adolescent pregnancy is a risk factor for low birth weight (LBW) babies. METHODS:This was a cross-sectional study of mothers and their newborns from a birth cohort in Aracaju, Northeastern Brazil. Data were collected consecutively from March to July 2005. Information collected included socioeconomic, biological and reproductive aspects of the mothers, using a standardized questionnaire. The impact of early pregnancy on birth weight was evaluated by multiple logistic regression. RESULTS:We studied 4,746 pairs of mothers and their babies. Of these, 20.6% were adolescents (< 20 years of age). Adolescent mothers had worse socioeconomic and reproductive conditions and perinatal outcomes when compared to other age groups. Having no prenatal care and smoking during pregnancy were the risk factors associated with low birth weight. Adolescent pregnancy, when linked to marital status "without partner", was associated with an increased proportion of low birth weight babies. CONCLUSIONS:Adolescence was a risk factor for LBW only for mothers without partners. Smoking during pregnancy and lack of prenatal care were considered to be independent risk factors for LBW.

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Section: Discussionmentioning

confidence: 99%

Is adolescent pregnancy a risk factor for low birth weight?

et al. 2013

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“…Em estudo populacional americano verificou-se frequência de 20,6% de adolescentes e 54,5% de adultas que se declararam casadas 26 .…”

Section: Discussionunclassified

“…Uma questão que merece destaque é a estreita relação dos efeitos adversos à gestação com a assistência prestada no pré-natal. O acompanhamento médico adequado durante a gestação pode ser visto como uma política compensatória de saúde, cabendo a ele o papel de minimizar o efeito das desigualdades socioeconômicas 26 .…”

Section: Discussionunclassified

Associação de gravidez na adolescência e prematuridade

Martins¹,

Santos²,

Sousa³

et al. 2011

Rev. Bras. Ginecol. Obstet.

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Janne eyre fernandes brito da costa 4 vanda maria ferreira siMões 5Resumo OBJETIVO: Analisar a associação da gravidez na adolescência com prematuridade. MÉTODOS: Foram incluídas todas as pacientes que pariram num hospital terciário universitário do Maranhão, no período de julho a dezembro de 2006, alocando-as em dois grupos: adolescentes (10 a 19 anos de idade) e adultas (20 a 34 anos). As variáveis estudadas foram: escolaridade, situação conjugal, número de consultas no pré-natal, idade gestacional no início do pré-natal, duração da gestação, tipo de parto e peso ao nascer. Os dados foram processados no programa Epi-Info, versão 3.4.1, e foram analisadas as associações entre as variáveis pela razão dos produtos cruzados, a odds ratio (OR), com intervalo de confiança (IC) de 95%; utilizaram-se também modelos de regressão logística. O nível de significância adotado foi de 0,05. RESULTADOS: Foram avaliadas 1.978 pacientes. Verificou-se frequência de 25,4% de partos em adolescentes, que apresentaram baixa escolaridade, ausência de companheiro, menor número de consultas no pré-natal, início tardio do pré-natal, baixo peso ao nascer (BPN) e prematuridade. Realizando a análise, tendo como variável desfecho a prematuridade, verificou-se nítida associação com baixo número de consultas do pré-natal (OR 3,0; IC95% 2,2-4,0) e início tardio do pré-natal (OR 1,9; IC95% 1,3-2,6), baixa escolaridade (OR 1,9; IC95% 1,4-2,5) em relação com a adolescência (OR 1,5; IC95% 1,1-1,9). As adolescentes tiveram menor incidência de cesárea (33,3%) que as adultas (49,4%), com diferença significativa, além de menor associação com pré-eclâmpsia e desproporção cefalopélvica. CONCLUSÕES: A gravidez na adolescência esteve associada a início tardio do pré-natal e baixo número de consultas pré-natal, além de baixa escolaridade, BPN, prematuridade e menor incidência de desproporção cefalopélvica e pré-eclâmpsia. Abstract PURPOSE:To analyze the association of pregnancy in adolescence and prematurity. METHODS: The study included all the patients who delivered at a teaching hospital in Maranhão State, from July to December 2006. The patients were divided into two groups: adolescents (10 to 19 years old) and adults (20 to 34 years old). The variables studied were: educational level, marital status, number of prenatal visits, gestational age at the onset of prenatal care, duration of gestation, delivery route and birth weight. Statistical analysis was performed using the Epi-Info software, version 3.4.1, and the associations between variables were analyzed by the odds ratio (OR), with a 95% confidence interval (CI). Models of logistic regression were also used. The level of significance adopted was 0.05. RESULTS: The study evaluated 1,978 patients. The frequency of deliveries in adolescents was 25.4%. This group presented low educational level, no mates, low number of prenatal visits, late onset of prenatal care, low birth weight and prematurity. In the analysis of prematurity as the outcome variable, there was a clear association with low number of pr...

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“…Similar to advanced maternal age, lower maternal age is thought to be a risk factor for both PTB and LBW. 10 Maternal age, obstetrics outcomes, and confounding factors Maternal age at delivery was obtained from M0 data and then categorized into five age groups: 20-24, 25-29, 30-34, 35-39, and ≥40 years. Obstetric outcome obtained from M0 data included gestational age at birth and birth weight.…”

Section: Data Collectionmentioning

confidence: 99%

The Effect of Maternal Age at the First Childbirth on Gestational Age and Birth Weight: The Japan Environment and Children’s Study (JECS)

Kyozuka

Fujimori

Hosoya

et al. 2019

Journal of Epidemiology

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Background: In Japan, mean maternal age at first childbirth is increasing. The aim of this study was to investigate whether maternal age at the first childbirth is a risk factor for preterm birth (PTB), low birth weight (LBW), and small for gestational age (SGA). Methods: We used the results of Japan Environment and Children's Study (JECS) who gave birth in 2011-2014. Cases of primiparous singleton pregnancies where the subject was ≥20 years and delivered after 22 weeks were included. All subjects were categorized into five groups according to maternal age: 20-24, 25-29, 30-34, 35-39, and ≥40 years. Adjusted odds ratios (aORs) for PTB (before 37 and 34 weeks), LBW (<2,500 g and <1,500 g), and SGA were calculated using a logistic regression model, with the 20-24-year age group as reference. Results: We analyzed 38,412 singleton primiparous pregnancies. The aORs of all outcomes increased in parallel with each maternal age group >30 years. The aORs of PTB before 37 and 34 weeks, LBW <2,500 g, LBW <1,500 g, and SGA in the 30-34-year age group were 1. Conclusion:The present study showed that higher maternal age (>30 years) at the first childbirth was an independent risk factor for PTB, LBW, and SGA.

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Teenage pregnancy and adverse birth outcomes: a large population based retrospective cohort study

Cited by 746 publications

References 32 publications

Is adolescent pregnancy a risk factor for low birth weight?

Is adolescent pregnancy a risk factor for low birth weight?

Associação de gravidez na adolescência e prematuridade

The Effect of Maternal Age at the First Childbirth on Gestational Age and Birth Weight: The Japan Environment and Children’s Study (JECS)

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