a decreasing trendp < 0.001
Regarding age distribution, the number of VarV-related AEFIs in the age groups ≤1, 2–3, 4–7, and ≥8 years were 626, 600, 186, and 65, respectively, corresponding to incidence rates of 42.69/100,000, 35.69/100,000, 25.29/100,000, and 17.96/100,000, respectively, showing a decreasing trend with increasing age ( p < 0.001).