Reference Age groups (months)

Other age groups (months)

p-value

6 to 11

12 to 23

24 to 35

36 to 47

48 to 60

1.000

0.0001*

1.000

0.000

12 to 23

24 to 35

36 to 47

48 to 60

0.0001*

0.574

0.0001*

24 to 35

36 to 47

48 to 60

0.922

1.000

36 to 47

48 to 60

0.096