Parental educational level and childhood wheezing and asthma: A prospective cohort study from the Japan Environment and Children’s Study

Yasuaki Saijo, Eiji Yoshioka, Yukihiro Sato, Toshinobu Miyamoto, Hiroshi Azuma, Yusuke Tanahashi, Yoshiya Ito, Sumitaka Kobayashi, Machiko Minatoya, Yu Ait Bamai, Keiko Yamazaki, Sachiko Itoh, Chihiro Miyashita, Atsuko Araki, Reiko Kishi and the Japan Environment and Children’s Study (JECS) Group

PLOS ONE, 2021, vol. 16, issue 4, 1-14

Abstract: Background: The influence of mothers’ and fathers’ educational levels in separate evaluations of asthma has not been fully investigated. This study aims to examine the associations of the mother’s and fathers’ educational levels with childhood wheeze and asthma adjusting for crude and pre-and post-natal modifiable risk factors. Methods: We conducted a prospective cohort study using data from the Japan Environment and Children’s Study, which recruited pregnant women from 2011 to 2014. The mother’s and father’s educational levels were surveyed by a questionnaire during the pregnancy, and childhood wheezing and doctor-diagnosed asthma were estimated using a 3-year questionnaire. Multilevel logistic regression analysis was performed to evaluate the association between the mother’s and father’s educational levels and childhood wheezing and asthma, adjusted for pre-and post-natal factors. Results: A total of 69,607 pairs of parents and their single infants were analyzed. We found 17.3% of children had wheezing and 7.7% had asthma. In crude analyses, lower educational level of parents was associated with an increased risk of childhood wheezing and asthma. After full adjustment, a lower educational level of mothers was associated with an increased risk of childhood asthma (junior high school (reference: high school); odds ratio (OR): 1.17, 95% CI, 1.01–1.36), and higher educational level, especially the mother’s, was associated with an increased risk of childhood wheezing (technical junior college, technical/vocational college, or associate degree (ECD3); OR: 1.12, 95% CI, 1.06–1.18, bachelor’s degree, or postgraduate degree; OR: 1.10, 95% CI, 1.03–1.18), and asthma (ECD3; OR: 1.13, 95% CI, 1.04–1.21). Conclusions: Parents’ lower educational level was a crude risk factor for childhood wheezing and asthma. However, an increased risk of wheezing due to mothers’ higher educational level was found after adjusting for pre-and post-natal factors.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0250255

DOI: 10.1371/journal.pone.0250255

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