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Table 7 Frequency distribution of various acute illnesses being sometimes or constantly problematic during 5-year epochs

From: Prevalence and onset of comorbidities in the CDKL5 disorder differ from Rett syndrome

  <5 years 5 - < 10 years 10- <15 years 15 - < 20 years Over 20 years
n/N (%) n/N (%) n/N (%) n/N (%) n/N (%)
Lower Respiratory Tract Infectiona 46/124 (37.1) 12/58 (20.7) 18/23 (21.7) 1/9 (11.1) 1/8 (12.5)
Asthma 10/113 (8.1) 8/58 (13.8) 3/22 (13.6) 0/9 (0) 0/7 (0)
Urinary Tract Infection 21/123 (17.1) 13/56 (23.2) 6/23 (26.1) 1/9 (11.1) 0/7 (0)
Ear infection 62/124 (50.0) 14/56 (25.0) 2/22 (9.1) 1/8 (12.5) 0/7 (0)
Tonsillitis 10/123 (8.1) 7/58 (12.1) 2/23 (8.7) 0/9 (0) 0/7 (0)
  1. The denominators of some variables are lower for older age groups due to children being younger at ascertainment and due to some missing data (some parents have not responded)
  2. aLower respiratory infection is comprised of infections including pneumonia, bronchitis and bronchiolitis