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Table 6 Risk of severe febrile seizures 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 0.72 0.42, 1.24 0.12
February 1.13 0.70, 1.83 0.51
March 1.15 0.71, 1.85 0.46
April (Reference) 1.00
May 1.54 0.98, 2.41 0.014
June* 2.17 1.42, 3.31 < 0.0001
July* 2.06 1.34, 3.15 < 0.0001
August* 2.54 1.68, 3.34 < 0.0001
September* 2.43 1.60, 3.68 < 0.0001
October* 1.91 1.24, 2.94 0.00012
November 1.46 0.93, 2.31 0.031
December 1.50 0.95, 2.36 0.021
  1. Intercept denotes estimated severe number of febrile seizures in april. Statistically significant months are denoted with*. The baseline monthly number of febrile seizures for this subgroup was 5.2