Table 2 RE-AIM indicators with the number and percent of studies (N = 31) reporting each indicator

 Participation rate

12

39

 Representativeness

5

16

 Sample size

31

100

 Description of intended audience

31

100

 Inclusion criteria

27

87

 Exclusion criteria

21

68

 Number of eligible exposed to recruitment

16

52

 Participant attendance/completion

10

32

 Method to identify intended audience

24

77

 Description of recruitment methods used

20

65

 Used qualitative methods to describe reach

2

7

 Core indicator reporting

52

 Overall reach reporting

54

 Breastfeeding outcomes

28

90

 Quality of life

0

0

 Unintended negative consequences

1

3

 Attrition

20

65

 Type of analysis

16

52

 Cost effectiveness

2

7

 Used qualitative methods to describe effectiveness

9

29

 Core indicator reporting

31

 Overall efficacy/effectiveness reporting

35

 Individual level maintenance

5

16

 Attrition at follow-up

6

19

 Use of qualitative methods to describe individual level maintenance

2

7

 Core indicator reporting

18

 Overall maintenance reporting

14

  Number of participating sites

18

58

  Site participation rate

5

16

  Site representativeness

1

3

  Number of staff that agreed to deliver intervention

5

16

  Staff participation rate

1

3

  Staff representativeness

0

0

  Description of intended settings

11

36

  Description of intervention locations

9

29

  Method to identify settings

6

19

  Site level inclusion/exclusion criteria

2

7

  Number of eligible and invited sites

8

26

  Method to identify delivery staff

6

19

  Number of staff eligible and invited to participate

0

0

  Staff level inclusion/exclusion criteria

2

7

  Level of delivery staff expertise

21

68

  Characteristics of staff

5

16

  Cost of adoption

1

3

  Used qualitative methods to describe adoption

3

10

  Core indicator reporting

16

  Overall adoption reporting

19

  Adherence to intervention protocol

6

19

  Measure of cost

3

10

  Intervention description

30

98

  Intervention duration

27

87

  Number of intervention contacts

26

84

  Timing of intervention contacts

25

81

  Description of theory or principles used to develop the intervention

10

32

  Consistency of implementation

3

10

  Use of qualitative methods to describe implementation

3

10

  Core indicator reporting

15

  Overall implementation reporting

48

  Description of program continuation post study

4

13

  Description of integration into delivery system

1

3

  Use of qualitative methods to describe organizational level maintenance

0

0

  Ongoing maintenance costs

1

3

  Core indicator reporting

13

  Overall maintenance reporting

5