Table 1 Demographic background of participating families

Children age

9.93

9.98

Children sex

 Male

49

53

 Female

36

33

Parent age

 29 years or younger

1

0

 30–34 years

5

7

 35–39 years

17

18

 40–44 years

25

26

 45 years or above

15

16

 Did not report

22

19

Parent education

 Primary or below

1

2

 Secondary

38

33

 Non-degree

7

19

 Degree

13

5

 Master or above

4

6

 Did not report

22

21

Employment status

 Housewife

29

31

 Full-time

22

18

 Part-time

11

15

 Unemployed

0

1

 Retired

0

0

 Did not report

23

21

Marital status

 Married

59

56

 Single

0

2

 Divorced

2

6

 Widowed

0

1

 Did not report

24

21

Household monthly income

 HK$0–9999

4

10

 HK$10,000 – 19,999

20

13

 HK$20,000 – 29,999

13

11

 HK$30,000 – 39,999

9

7

 HK$40,000 – 59,999

11

12

 HK$60,000 – 79,999

1

6

 HK$80,000 – 99,999

2

2

 HK$100,000 or more

1

1

 Did not report

24

24

Number of children in household

 1

18

21

 2

32

38

 3

13

6

 Did not report

22

21