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Published on: August 7, 2017
Prevalence of respiratory symptoms in under 5s: 1993 to 2001
M F Linehan1, M L Hazell, T L Frank
1General Practice Research Unit, North West Lung Research Centre, Wythenshawe Hospital, Manchester M23 9LT, UK. linehanmary@yahoo.co.uk
Insights
Respiratory symptoms like wheeze and night cough decreased in young children over eight years. This trend may indicate improved treatments or a decline in non-asthma related conditions.
Area of Science:
- Pediatrics
- Respiratory Medicine
- Epidemiology
Background:
- Respiratory symptoms are common in young children.
- Understanding trends in symptom prevalence is crucial for public health and clinical practice.
Purpose of the Study:
- To analyze changes in the prevalence of respiratory symptoms in children aged 1-4 years over an eight-year period.
- To examine trends in specific symptoms like wheeze, night cough, hay fever, and eczema.
Main Methods:
- Longitudinal study using questionnaire data from two general practices.
- Data collected across four time points: 1993, 1995, 1999, and 2001.
- Analysis focused on children aged 1-4 years at the time of survey completion.
Main Results:
- A statistically significant decrease in the prevalence of wheeze and night cough was observed in 2-year-olds.
- Night cough prevalence also significantly decreased in 4-year-olds.
- Repeated antibiotic prescriptions declined for 2 and 3-year-olds; no changes in hay fever, eczema, or family history of asthma were noted.
Conclusions:
- The observed downward trend in respiratory symptoms may reflect genuine decreases or advancements in treatment efficacy.
- Absence of change in allergic conditions suggests the trend might not be solely related to asthma prevalence.
- Further research is needed to elucidate the specific factors contributing to these observed changes in pediatric respiratory health.
Aim:
To describe changes in the prevalence of respiratory symptoms in 1-4 year olds in two general practice populations observed on four occasions over an eight year period.
Methods:
In 1993, 1995, 1999, and 2001, questionnaires were posted to the parents of patients aged 15 years or younger and registered with either of two general practices. Only children aged 1-4 years at time of questionnaire completion were included in this study. For each survey, the prevalence of five key variables was determined.
Results:
The response rates for all children in the four surveys were 72.8%, 70.6%, 65.0%, and 60.7% respectively. When respondents aged 1-4 years old were stratified into one-year age bands, there was a decrease in the prevalence of symptoms over the study period. This was statistically significant for wheeze and night cough in 2 year olds and for night cough in 4 year olds. Repeated antibiotic prescriptions decreased significantly for 2 and 3 year olds. There were no changes in the prevalence of hay fever or eczema and family history of asthma.
Conclusions:
The downward trend in symptom prevalence might represent a real decrease in symptoms or improvements in treatment. In the absence of changes in the prevalence of hay fever and family history of asthma, the downward trend in symptom prevalence may suggest changes in the prevalence of conditions other than asthma.
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