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Table 4 Most frequently identified barriers to enhancing, addressing or reporting intervention fidelity

From: Surveying knowledge, practice and attitudes towards intervention fidelity within trials of complex healthcare interventions

Barrier

Number (%)

Poor knowledge or understanding

202 (77.4)

Lack of practical guidance

167 (64)

Lack of criteria specifying acceptable levels

164 (62.8)

Inconsistent terminology

148 (56.7)

Time restraints

131 (50.2)

Lack of perceived importance

129 (49.4)

Inconsistent definitions

112 (42.9)

Lack of agreement around appropriate strategies

109 (41.8)

Core components of interventions not sufficiently identified

105 (40.2)

Cost

97 (37.2)

Lack of journal requirement for publication

92 (35.2)

Resistance to monitoring/assessment by providers

82 (31.4)

Resistance to the use of treatment manuals by providers

79 (30.3)

Space limitations for publication

77 (29.5)

None

1 (0.4)

Othera

12 (4.6)

 “Real-world” complexity and constraints

4 (1.6)

 Difficulty quantifying fidelity data

3 (1.2)

 Willingness of principal investigator

2 (0.8)

 Insufficient teaching/education

1 (0.4)

 Rigidity/lack of flexibility may limit patient care

1 (0.4)

 Practitioners’ desire for independence

1 (0.4)

  1. aAdditional barriers identified by participants