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Table 10 Risk of febrile seizures in children 1–2 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* 0.65 0.49, 0.86 < 0.0001
February 0.78 0.60, 1.02 0.17
March 0.92 0.71, 1.18 0.38
April (Reference) 1.00
May* 1.33 1.05, 1.67 0.0018
June* 1.68 1.34, 2.10 < 0.0001
July* 1.80 1.44, 2.24 < 0.0001
August* 1.91 1.54, 2.37 < 0.0001
September* 1.85 1.49, 2.30 < 0.0001
October* 1.37 1.09, 1.73 0.00042
November 1.06 0.83, 1.35 0.54
December 1.16 0.92, 1.48 0.10
  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 21.9