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Table 12 Risk of febrile seizures in children 3–5 years old by month of year

From: Snotwatch: an ecological analysis of the relationship between febrile seizures and respiratory virus activity

Month Risk Ratio 99% CI P-value
January 1.03 0.57, 1.83 0.91
February 1.28 0.74, 2.22 0.24
March 1.18 0.67, 2.07 0.45
April (Reference) 1.00
May* 1.77 1.06, 2.96 < 0.0044
June* 2.87 1.78, 4.64 < 0.0001
July* 2.56 1.58, 4.17 < 0.0001
August* 3.49 2.18, 5.57 < 0.0001
September* 3.00 1.86, 4.83 < 0.0001
October* 1.74 1.04, 2.93 0.0056
November* 1.74 1.04, 2.93 0.0056
December 1.44 0.84, 2.46 0.083
  1. Intercept denotes estimated number of febrile seizures in this age group in April. Statistically significant months are denoted with*. The baseline monthly number of febrile seizures for this subgroup was 3.9