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Outcome of respiratory illness occurring in the first year of life
Insights
Infants with lower respiratory illness in their first year had reduced lung function at age five. Male infants and those from non-manual households showed better peak expiratory flow, indicating sex and social class impact respiratory health.
Area of Science:
- Pediatric respiratory medicine
- Epidemiology
- Public health
Background:
- Infant respiratory illnesses can have long-term health consequences.
- Understanding factors influencing childhood lung function is crucial for public health.
- Early life respiratory infections are a significant global health concern.
Purpose of the Study:
- To investigate the long-term impact of early-life respiratory illness on ventilatory capacity in children.
- To identify potential sex and socioeconomic factors influencing childhood lung function.
Main Methods:
- Prospective birth cohort study involving infants from two inner London general practices.
- Assessment of ventilatory capacity (peak expiratory flow) at age five.
- Analysis of respiratory illness history in the first year of life, sex, and parental occupation (social class).
Main Results:
- A history of two or more lower respiratory illness episodes in infancy was linked to significantly reduced peak expiratory flow at age five.
- Male infants demonstrated significantly higher peak expiratory flow rates compared to female infants.
- Infants whose parents held manual occupations had significantly lower peak expiratory flow rates than those from non-manual occupations.
- A significant interaction was observed between sex and social class in relation to peak expiratory flow.
Conclusions:
- Early-life lower respiratory illness can lead to persistent reductions in lung function.
- Sex and socioeconomic status are significant determinants of childhood ventilatory capacity.
- These findings highlight the importance of addressing early respiratory infections and socioeconomic disparities to improve long-term respiratory health in children.
Abstract:
This paper describes the outcome of respiratory illness presented by a birth cohort of infants in the first year of life who were born to mothers in two inner London group general practices in terms of the ventilatory capacity measured at their fifth birthday. A history of two or more episodes of "lower" respiratory illness in the first year of life was associated with a significant reduction in peak expiratory flow when compared with those who had no such history. Boys had significantly higher peak flow rates than girls; those whose parents were in manual occupations had significantly lower peak flow rates than those whose parents were in non-manual occupations. There was a significant interaction between sex and social class.