Table 3 Doses of intervention (N = 34)

Intervention duration varied

2wks ∼ 8wks

2

33, 48

4

58, 60, 64, 66

8wks

0

-

2

52, 62

8wks ∼ 24month

13

32, 34, 36–43, 45, 46,

49

9

51, 53–57, 59, 61, 63

N/A

4

35, 44, 47, 50

0

-

Dose frequency

Once a month

3

34, 48, 50

0

-

Twice a month

0

-

1

57

Once a week

2

37, 43

3

53, 58, 64

Twice a week

2

33, 45

4

54, 55, 61, 62

3 to 7 times a week

3

32, 38, 46

3

60, 63, 65

N/A

9

35, 36, 39–42, 44, 47, 49

4

51, 52, 56, 59

Time

Less than half an hour

2

37, 41

1

53

30 min to 1 h

5

32, 33, 38, 45, 46

3

57, 60, 63

1 h

0

-

2

56, 65

More than an hour

1

43

5

55, 58, 61, 62, 64

N/A

11

34, 35, 36, 39, 40, 42, 44, 47–50

4

51, 52, 54, 59