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Table 1 Age demographic information of healthy Participants

From: Establishing an appropriate Z score regression equation for Chinese pediatric coronary artery echocardiography: a multicenter prospective cohort study

Age group

NO.

Female

Male

1mo - < 3mo

9

12

3mo- < 1y

40

78

1- < 2y

44

80

2- < 3y

30

57

3- < 4y

34

45

4- < 5y

23

40

5- < 6y

20

37

6- < 7y

15

32

7- < 8y

20

36

8- < 9y

12

26

9- < 10y

8

20

10- < 11y

11

20

11- < 12y

8

10

12- < 13y

0

3

-14y

2

3

-15y

2

1

-16y

3

1

-17y

0

0

  1. m Month, y Year.