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Table 2 Characteristics of identified feasibility studies

From: The current use of feasibility studies in the assessment of feasibility for stepped-wedge cluster randomised trials: a systematic review

Characteristic

Number (%)a

Study registered

5 (45)

Report of findings

8 (73)

Protocol

3 (27)

Study described as:

 Pilot

6 (55)

 Other

4 (36)

 Not described

1 (9)

 External feasibility study

8 (73)

 Internal feasibility study

2 (18)

 Unclear

1 (9)

Type of research:

 Quantitative

3 (27)

 Qualitative

1 (9)

 Mixed

6 (55)

 Unclear

1 (9)

Quantitative design:

 Single-arm

4 (36)

 Stepped-wedge

3 (27)

 Parallel

1 (9)

 Observational

1 (9)

 Randomised

3 (27)

Setting:

 Health care

9 (82)

 Community

2 (18)

 Cluster type:

 

 Hospitals

3 (27)

 Wards

4 (36)

 Clinics

2 (18)

 Geographical areas

2 (18)

 Study duration (months) (median (IQR))

12 (4.7, 15)

 Number of clusters (median (IQR))

3.5 (1.8, 6)

Participant type:

 Healthcare professionals

1 (9)

 Patients

5 (45)

 Both healthcare professionals and patients

4 (36)

 Other

1 (9)

Number of participants (median (IQR))

109 (35, 2220)

Rational for sample size:

 Convenience sample

6 (55)

 Calculation based on the main clinical outcome

2 (18)

 Not stated

3 (27)

  1. awith denominator the total number of studies (n = 11) unless otherwise stated, IQR interquartile range