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Sex influences on lung function and medication in childhood asthma
Jenny Hallberg1, Martin Anderson, Magnus Wickman
1Division of Occupational Medicine, Department of Public Health Sciences, Karolinska Institute, Stockholm, Sweden. jenny.hallberg@phs.ki.se
Insights
Asthma impacts lung function in children, with girls experiencing greater effects on peak expiratory flow (PEF) and receiving less treatment than boys. This highlights potential sex-based disparities in pediatric asthma management.
Area of Science:
- Pediatric Pulmonology
- Environmental Epidemiology
- Child Health Research
Background:
- Asthma is a common chronic respiratory disease in children.
- Understanding sex-based differences in asthma prevalence, diagnosis, and treatment is crucial for effective management.
- The BAMSE birth cohort provides a valuable resource for studying early-life environmental influences on asthma.
Purpose of the Study:
- To investigate sex differences in asthma prevalence, diagnosis, and treatment among 4-year-old children.
- To assess the influence of asthma severity on lung function (PEF) in relation to sex.
- To analyze treatment patterns for pediatric asthma based on sex and symptom frequency.
Main Methods:
- Utilized data from the BAMSE population-based birth cohort study.
- Collected questionnaire data on asthma symptoms, diagnosis, and medication at 4-year follow-up.
- Performed clinical testing, including peak expiratory flow (PEF) measurements, on a subset of children.
Main Results:
- Children with asthma exhibited lower PEF compared to healthy children, with a more pronounced effect in persistent asthma for both sexes and transient asthma for girls.
- Doctor's diagnosis of asthma did not differ significantly between boys and girls.
- More boys than girls received inhaled corticosteroids, even when symptom frequency was considered.
Conclusions:
- Girls aged 4 years show a greater impact of asthma symptoms on PEF compared to boys.
- Girls with asthma symptoms are less frequently treated with inhaled corticosteroids than boys.
- Findings suggest potential sex-based disparities in pediatric asthma management and its impact on lung function.
Aim:
To evaluate possible sex differences in prevalence, diagnosis and treatment of asthma, and influence on lung function associated with asthma severity in a population-based birth cohort (BAMSE) of 4089 children.
Methods:
At 4-y follow-up, 92% responded to a questionnaire on symptoms of asthma, current medication and doctor's diagnosis of asthma. A total of 2965 children participated in clinical testing, including measurements of peak expiratory flow (PEF), and were assigned to groups of asthma or no asthma by reported airway symptoms.
Results:
Children in asthma groups had lower PEF readings compared to healthy children. This effect was most pronounced for both sexes in the persistent group (boys p<0.05, girls p<0.001) and for girls in the transient group (p<0.01). A doctor's diagnosis of asthma did not significantly differ between boys and girls, but significantly more boys than girls had inhaled corticosteroids, even when stratifying by frequency of symptoms.
Conclusion:
These results suggest that when 4-y-old children are stratified according to common diagnostic criteria, girls have a larger effect on PEF of asthma symptoms and are less frequently treated compared to boys.
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