Table 2 Demographic characteristics of intervention and control groups

Total number of participants

60

51

53

55

  Male

47

21

37

29

<0.001

  Female

13

30

16

26

   < 30

15

9

5

15

0.038

  31–46

27

16

30

23

   > 46

18

26

18

17

  Primary school and below

49

11

34

8

<0.001

  Secondary school

10

31

17

31

  High school and above

1

9

2

16

  Planting

35

33

25

32

0.216

  Livestock breeding

4

6

10

4

  Migrant workers

6

8

6

8

  Others

15

4

12

11

   < 1,000

47

2

11

3

<0.001

  1,001–3,000

11

22

33

13

  3,001–6,000

2

18

7

19

   > 6,000

0

9

2

20

Having migrant workers in the family

35

27

32

41

0.121