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Table 3 Intervention fidelity delivery score summaries by session type for certification and fidelity drift

From: A RCT to explore the effectiveness of supporting adherence to nebuliser medication in adults with cystic fibrosis: fidelity assessment of study interventions

Session type

Assessmenta

N

Mean (SD)

Median (IQR)

First intervention visit

Certification

1st assessment

27

96.0 (3.8)

97.2 (92.3, 100.0)

Re-assessment

1

98.6 (-)

98.6 (98.6, 98.6)

Fidelity Drift

Assessment

29

94.1 (8.1)

95.8 (93.1, 97.2)

Review Visit

Certification

1st assessment

30

89.8 (12.3)

92.6 (87.0, 98.1)

Re-assessment

9

94.6 (4.0)

96.3 (94.4, 96.3)

Fidelity Drift

Assessment

47

91.5 (8.7)

92.6 (90.2, 96.3)

Phase Review Visit

Certification

1st assessment

30

92.7 (9.1)

94.4 (91.7, 97.2)

Re-assessment

6

93.2 (10.3)

97.2 (93.1, 99.3)

Fidelity Drift

Assessment

34

92.7 (7.9)

94.4 (91.7, 97.2)

  1. aReasons for assessment, with multiple reasons possible: certification (97), reassessment after failed certification (36), high withdrawal rate (18), insufficient audio-recorded sessions (37), fewer than expected intervention visits or action/coping plans created (82), random to ensure total assessment sample ≥ 20% of all interventionist visits (9)