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Table 5 Predicted probabilities for reporting feasibility indicators across time

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

Feasibility indicator

Early Group

(1982–2006)

Middle Group

(2011–2013)

Late Group

(2018–2020)

N=200

N=200

N=200

Margina

95% CIb

Margina

95% CIb

Margina

95% CIb

Recruitment

0.67

0.60–0.74

0.70

0.64–0.77

0.76

0.71–0.82

Retentionc

0.98

0.97–1.00

0.99

0.98–1.00

-

-

Acceptability

 Description of quantitative measure

0.21

0.16–0.27

0.29

0.23–0.35

0.45

0.39–0.52

 Quantitative outcome

0.26

0.19–0.32

0.35

0.28–0.42

0.49

0.42–0.55

 Description of qualitative measure

0.15

0.09–0.19

0.21

0.15–0.27

0.36

0.29–0.43

 Qualitative outcome

0.19

0.14–0.25

0.23

0.17–0.29

0.36

0.29–0.43

Attendance

 Description of measure

0.15

0.10–0.21

0.18

0.12–0.23

0.22

0.16–0.27

 Outcome

0.33

0.26–0.39

0.36

0.29–0.42

0.32

0.25–0.38

Compliance

 Description of measure

0.21

0.15–0.26

0.26

0.19–0.32

0.35

0.28–0.41

 Outcome

0.24

0.18–0.29

0.28

0.21–0.34

0.42

0.35–0.49

 Cost

0.17

0.12–0.23

0.19

0.15–0.25

0.23

0.20–0.31

Treatment fidelity

 Description of measure

0.11

0.07–0.15

0.19

0.14–0.25

0.24

0.18–0.29

 Outcome

0.11

0.06–0.15

0.12

0.07–0.17

0.20

0.14–0.26

 Mentioned feasibility-related parameters in purpose statement

0.50

0.43–0.57

0.58

0.51–0.65

0.71

0.64–0.77

 Cited a guideline/framework for the reporting of preliminary studies

0.01

−0.01–0.02

0.05

0.02–0.09

0.23

0.17–0.28

  1. Note: aThe margin column communicates marginal predicted probabilities calculated from logistic regression models
  2. b95% CI stands for 95% confidence interval
  3. cLate Group (2018–2020) retention variable had no observations coded as 0