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Published on: August 7, 2017
Birth characteristics and acute otitis media in early life
Yngvild E Bentdal1, Siri E Håberg, Gunnhild Karevold
1Faculty Division of Akershus University Hospital, University of Oslo, Norway. y.e.bentdal@medisin.uio.no
Insights
Preterm birth, but not low birth weight, is associated with an increased risk of acute otitis media (AOM) in early childhood. This finding highlights preterm birth as a significant factor in early AOM development.
Area of Science:
- Pediatrics
- Neonatology
- Epidemiology
Background:
- Acute otitis media (AOM) is a common childhood infection.
- Preterm birth and low birth weight are known risk factors for various infant health issues.
- The association between birth status and early AOM requires further investigation.
Purpose of the Study:
- To determine if preterm birth and low birth weight are linked to single or recurrent AOM episodes within the first 18 months of life.
Main Methods:
- A cohort study of 33,192 children from the Norwegian Mother and Child Cohort.
- Maternal questionnaires collected AOM data at 6, 11, and 18 months.
- Birth weight and gestational age data were sourced from the Medical Birth Registry of Norway.
- Regression analyses controlled for potential confounding factors.
Main Results:
- Preterm birth showed a slight association with both single and recurrent AOM.
- Infants born before 33 weeks had an adjusted relative risk (aRR) of 1.37 for any AOM episode.
- Infants born between 33-36 weeks had an aRR of 1.34 for recurrent AOM.
- No significant association was found between low birth weight and AOM.
Conclusions:
- Children born preterm have a modestly increased risk of developing AOM in early life.
- Preterm birth appears to be a more critical determinant of early AOM risk than low birth weight.
Objective:
To assess whether preterm birth and low birth weight were associated with single and recurrent episodes of acute otitis media (AOM) the first 18 months of life.
Methods:
The study population consisted of 33,192 children in the Norwegian Mother and Child Cohort, conducted at the Norwegian Institute of Public Health. The majority of all pregnant women in Norway were invited to participate and the response rate was 44%. Participating women received questionnaires during pregnancy and when the child was 6 and 18 months. Main outcome measures were maternal reports of AOM at ages 6, 11 and 18 months. Information on birth weight and gestational age was obtained from the Medical Birth Registry of Norway. Regression analyses were performed controlling for a variety of potential confounders.
Results:
Preterm birth was slightly associated with both single and recurrent episodes of AOM the first 18 months of age. The adjusted relative risk (aRR) for having any episode of AOM was 1.37, 95%CI (1.12-1.68) if born before week 33, and the aRR for having recurrent AOM was 1.34, 95%CI (1.01-1.77) if born in weeks 33-36 (reference group: >or=37 weeks). A corresponding tendency was not found for low birth weight.
Conclusions:
The finding indicates a modest increased risk of having AOM in children born preterm, and preterm birth seems to be more important than low birth weight in determining risk of having AOM in early life.
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