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Table 3 Presence or absence of the reporting of feasibility indicators across time

From: Feasibility indicators in obesity-related behavioral intervention preliminary studies: a historical scoping review

Feasibility indicators

All studies

(1982–2020)

Early Group

(1982–2006)

Middle Group

(2011–2013)

Late Group

(2018–2020)

N = 600

N = 200

N = 200

N = 200

N

Percent (%)

N

Percent (%)

N

Percent (%)

N

Percent (%)

Recruitment

428

71.3

134

67

141

70.5

153

76.5

Retention

595

99.2

197

98.5

198

99

200

100

Acceptability

 Description of quantitative Measure

192

32

43

21.5

58

29

91

45.5

 Quantitative outcome

219

36.5

52

26

70

35

97

48.5

 Description of qualitative outcome

143

23.8

29

14.5

42

21

72

36

 Qualitative outcome

157

26.2

39

19.5

46

23

72

36

Attendance

 Description of measure

109

18.2

31

15.5

35

17.5

43

21.5

 Outcome

199

33.2

65

32.5

71

35.5

63

31.5

Compliance

 Description of measure

162

27

41

20.5

52

26

69

34.5

 Outcome

187

31.2

48

24

55

27.5

84

42

Cost

23

3.8

8

4.0

5

2.5

10

5.0

Treatment fidelity

 Description of measure

109

18.2

22

11

39

19.5

48

24

 Outcome

85

14.2

21

10.5

24

12

40

20

Total outcomes reported

 1

65

13

24

12

29

14.5

12

6

 2

143

27

61

30.5

44

22

38

19

 3

168

29.2

65

32.5

56

28

47

23.5

 4

136

21.3

39

19.5

43

21.5

54

27

 5

58

6.5

7

3.5

20

10

31

15.5

 6

29

2.7

4

2

8

4

17

8.5

 7

1

0.3

0

0

0

0

1

0.5

Mentioned feasibility-related parameters in the purpose statement

357

59.5

100

50

116

58

141

70.5

Cited a guideline/framework for the reporting of preliminary studies

58

9.7

2

1

11

5.5

45

22.5

Conducted/reported statistical analyses related to preliminary efficacy

561

93.5

186

93

192

96

183

91.5

Made any statements about preliminary efficacy in conclusion

371

61.8

101

50.5

128

64

142

71

Made positive statements about preliminary efficacy in conclusion.

298

49.7

90

45

99

49.5

109

54.5