2018-2019

(n = 164)

2020-2022

(n = 200)

2023

(n = 175)

P1-Value

P2-Value

EV-A71

Age group Month n (%)

0.786b

-

<12

1(16.67)

0(0)

-

12 - 23

2(33.33)

1(50)

-

24 - 35

2(33.33)

0(0)

-

36 - 47

1(16.67)

0(0)

-

≥48

0(0)

1(50)

-

CV-A16

Age group Month n (%)

0.542b

0.246b

<12

3(11.54)

5(2.5)

0(0)

12 - 23

6(23.08)

11(5.5)

12(36.36)

24 - 35

6 (23.08)

9 (4.5)

9 (27.27)

36 - 47

7 (26.92)

9 (4.5)

10 (30.30)

≥48

4 (15.38)

1 (0.5)

2 (6.06)

Other EVs

Age group Month n(%)

0.39a

0.142a

<12

17 (12.88)

31 (19.02)

21 (14.79)

12 - 23

50 (37.88)

67 (41.10)

45 (31.69)

24 - 35

32 (24.24)

27 (16.56)

25 (17.61)

36 - 47

19 (14.39)

22 (13.50)

28 (19.72)

≥48

14 (10.61)

16 (9.82)

23 (16.20)