Table 4 RisK of mild febrile seizures by month of year

January

0.72

0.56, 0.93

0.001

February

0.80

0.63, 1.03

0.023

March

0.89

0.70, 1.13

0.21

April (Reference)

1.00

–

–

May^*

1.33

1.07, 1.65

0.0008

June^*

1.67

1.36, 2.06

< 0.0001

July*

1.76

1.44, 2.17

< 0.0001

August^*

1.92

1.57, 2.35

< 0.0001

September^*

1.85

1.51, 2.26

< 0.0001

October^*

1.27

1.02, 1.58

0.0053

November

1.09

0.86, 1.36

0.35

December

1.05

0.83, 1.32

0.59