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Occurrence and recurrence of acute otitis media among children
Insights
Acute otitis media (ear infections) are common in Finnish children, with high incidence in infants. Recurrence is frequent, especially in the second year of life and among boys.
Area of Science:
- Pediatrics
- Epidemiology
- Otolaryngology
Background:
- Acute otitis media (AOM) is a common childhood illness with significant public health implications.
- Understanding the incidence and recurrence patterns of AOM is crucial for effective prevention and management strategies.
- Previous studies have indicated variations in AOM occurrence based on age, sex, and socioeconomic factors.
Purpose of the Study:
- To investigate the incidence and recurrence rates of acute otitis media in a large cohort of Finnish children.
- To identify specific age groups, demographic factors, and socioeconomic statuses associated with higher risks of AOM and its recurrence.
- To provide data that can inform public health interventions and clinical guidelines for managing childhood ear infections.
Main Methods:
- A retrospective cohort study involving 37,570 Finnish children under 15 years of age.
- Data collection focused on the occurrence and recurrence of acute otitis media over a one-year period.
- Statistical analysis was employed to determine incidence rates, recurrence rates, and their associations with age, sex, and social class.
Main Results:
- The annual incidence of AOM was 16.6%, with the highest rate (75.5%) observed in infants aged 6-11 months.
- Fifty percent of children experienced at least one ear infection by age three, and 75% by age ten.
- Recurrences were common, with half of index attacks being recurrences in children under 10, and 28% of index attacks followed by recurrence in children under 16. Higher rates were seen in boys before age two and in higher social classes.
Conclusions:
- Acute otitis media represents a substantial health burden in Finnish children, particularly in early infancy.
- Recurrence of AOM is a significant issue, with specific age groups and demographic factors (male sex, higher social class) showing increased risk.
- The findings underscore the need for targeted interventions and further research into the underlying causes of AOM incidence and recurrence in children.
Abstract:
The occurrence and recurrence of acute otitis media among 37 570 Finnish children at risk who were under 15 years of age were studied. During a one-year period, 4 337 of the children experienced a total of 6 249 attacks of acute otitis media, giving an annual incidence rate of 16.6%. The highest incidence, 75.5%, was found among infants 6--11 months old. 50% of Finnish children had experienced at least one ear infection before their third birthday and 75% before the age of 10, and among this latter group the total number of otitis attacks per child-year during a lifetime was 0.71. Among children under 10, half of the index attacks were recurrences, and among children under 16, 28% of the index attacks were followed by recurrences during the study year. The highest relative recurrence rate was found during the second year of life. Before the second birthday both incidence and recurrence rates were significantly (p less than 0.001) higher among boys. Acute otitis media was most common in the higher social class families and the lowest incidence and recurrence rates were found among children of farmers.