Dataset Information

Association of maternal age with child health: A Japanese longitudinal study.

ABSTRACT: Average maternal age at birth has been rising steadily in Western and some Asian countries. Older maternal age has been associated with adverse pregnancy and birth outcomes; however, studies on the relationship between maternal age and young children's health remain scarce. Therefore, we sought to investigate the association of maternal age with child health outcomes in the Japanese population. We analyzed data from two birth cohorts of the nationwide Japanese Longitudinal Survey of Babies in 21st Century (n2001 = 47,715 and n2010 = 38,554). We estimated risks of unintentional injuries and hospital admissions at 18 and 66 months according to maternal age, controlling for the following potential confounders: parental education; maternal parity, smoking status, and employment status; household income; paternal age, and sex of the child. We also included the following as potential mediators: preterm births and birthweight. We observed a decreasing trend in the risks of children's unintentional injuries and hospital admissions at 18 months according to maternal age in both cohorts. In the 2001 cohort, compared to mothers <25 years, odds ratios of hospital admission at 18 months were 0.97 [95% CI: 0.86, 1.09], 0.92 [0.81, 1.05], 0.76 [0.65, 0.90], and 0.71 [0.51, 0.98] for mothers aged 25.0-29.9, 30.0-34.9, 35.0-39.9, and >40.0 years, respectively, controlling for confounders. Our findings were in line with previous findings from population-based studies conducted in the United Kingdom and Canada suggesting that older maternal age may be beneficial for early child health.

SUBMITTER: Kato T

PROVIDER: S-EPMC5325269 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Association of maternal age with child health: A Japanese longitudinal study.

Kato Tsuguhiko T Yorifuji Takashi T Yamakawa Michiyo M Inoue Sachiko S Doi Hiroyuki H Eboshida Akira A Kawachi Ichiro I

PloS one 20170224 2

Average maternal age at birth has been rising steadily in Western and some Asian countries. Older maternal age has been associated with adverse pregnancy and birth outcomes; however, studies on the relationship between maternal age and young children's health remain scarce. Therefore, we sought to investigate the association of maternal age with child health outcomes in the Japanese population. We analyzed data from two birth cohorts of the nationwide Japanese Longitudinal Survey of Babies in 21 ...[more]

PMID: 28234951

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Project description:BACKGROUND: Six previous studies have examined the relationships between single nucleotide polymorphisms (SNPs) in the IL13 gene and allergic rhinitis, but the results have been inconsistent. However, a recent meta-analysis using data from these 6 studies has shown that the A allele of IL13 SNP rs20541 was associated with an increased risk of allergic rhinitis, whereas no such relationship existed between IL13 SNP rs1800925 and allergic rhinitis. We investigated the associations between IL13 SNPs rs1800925 and rs20541 and the risk of rhinoconjunctivitis in Japanese women. METHODS: Included were 393 cases who met the criteria of the International Study of Asthma and Allergies in Childhood (ISAAC) for rhinoconjunctivitis. Control subjects were 767 women without rhinoconjunctivitis according to the ISAAC criteria, who had also not been diagnosed with allergic rhinitis by a doctor. Adjustment was made for age, region of residence, presence of older siblings, smoking, family history of allergic rhinitis, and education. RESULTS: Compared with the GG genotype of IL13 SNP rs20541, the AA genotype, occurring in 7.1% of control subjects, was significantly positively related to the risk of rhinoconjunctivitis: the adjusted odds ratio was 1.65 (95% confidence interval: 1.05 - 2.60). SNP rs1800925 was not associated with rhinoconjunctivitis. The haplotype comprising the rs1800925 C allele and the rs20541 A allele was significantly positively related to rhinoconjunctivitis. The multiplicative interactions between the two SNPs under study and smoking on the risk of rhinoconjunctivitis were not statistically significant. Based on the recessive model, however, the additive interaction between SNP rs1800925, but not rs20541, and smoking was significant. CONCLUSIONS: This study suggests that the minor genotype of IL13 SNP rs20541 and the CA haplotype are significantly positively associated with the risk of rhinoconjunctivitis. In addition, a new pattern of biological interaction that affects the risk of rhinoconjunctivitis is described between SNP rs1800925 and smoking.

Project description:BackgroundMany low- and middle-income countries (LMICs) prioritise minimising maternal, neonatal, and infant mortality. To improve maternal and child health, various evidence-based interventions have been introduced. Quality of care is pertinent while strengthening service utilisations. Achieving optimal-quality care is often marred with difficulties, such as inadequate skills and knowledge of health workers, poor fidelity to protocols, and poor user acceptance. Angola is a LMIC facing these problems. This study aimed to demonstrate the influence of health facilities' quality of care at antenatal care (ANC) on subsequent maternal, newborn and child health (MNCH) service utilisation in Angolan pregnant women.MethodsPopulation-based cohort data from the Maternal and Child Health Handbook (MCH-HB) effectiveness study were analysed. The original study was conducted among women who became pregnant between March and April 2019 in Benguela Province, Angola. Socioeconomic and MNCH service utilisation indicators were collected through interviewer-administered structured questionnaires. The indicator of quality of care was a composite measure that assessed the implementation of the MCH-HB based on the RE-AIM framework, mostly consisted of common factors related to delivery and management of MNCH services. A multivariate logistic regression analysis was performed between quality of care, socioeconomic factors, and service utilisation indicators among the intervention group participants who had at least one ANC visit.ResultsOf the 3351 pregnant women who visited ANC at least once, 2911 without missing values among explanatory or dependent variables were included in the analysis. Among them, 2032 (69.8%) were exposed to optimal-quality ANC, and 2058 (70.7%), 1573 (54.0%), and 941 (32.3%) achieved ANC target, facility delivery, and vaccination target for six-month-old infants, respectively. Exposure to suboptimal-quality care at ANC was associated with lower odds for facility delivery (adjusted odds ratio (AOR) = 0.60, 95% CI = 0.49-0.73) and the achievement of the vaccination target (AOR = 0.43, 95% CI = 0.33-0.55). A low socioeconomic status was inversely associated with health service utilisation indicators.ConclusionsHealth facilities' quality of care influences subsequent MNCH service utilisation. Therefore, simultaneous efforts to improve quality of care and the mobilisation of pregnant women and communities are essential for enhancing maternal and child health.

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Association of maternal age with child health: A Japanese longitudinal study.

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Association of maternal age with child health: A Japanese longitudinal study.

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