Table 2.

Relevant Theoretical Domains Framework (TDF) Themes and Sub-themes Identified as Enablers or Barriers

Domain/ Theme	Sub-theme	Relevance	Enabler/ Barrier
Environmental context and resources	Using EMR tools	Frequent	Enabler
	Referring to guidelines	Frequent	Enabler
	Depending on support staff	Frequent	Enabler
Knowledge	Being aware of guidelines	Conflicting	Enabler
	Having a positive attitude toward guidelines	Conflicting	Enabler & Barrier
	Knowing what to do	Frequent	Enabler
Memory, attention and decision processes	Making a deliberate decision	Frequent	Enabler
	Forgetting	Important	Barrier
Beliefs about consequences	Being aware of clinical consequences	Frequent	Enabler
	Perceived low risk in delaying confirmatory test	Important	Barrier
	Weighing the costs and benefits	Frequent	Enabler
Goals	Prioritizing care goals	Conflicting	Enabler & Barrier
	Recognizing the importance	Frequent	Enabler
Social or professional role	Claiming responsibility	Frequent	Enabler
	Identifying practice type or role influences	Frequent	Enabler & Barrier
Behavioural regulation	Taking ownership of action	Frequent	Enabler
Skills	Demonstrating communication skills	Important	Enabler
Optimism	Having a positive attitude	Frequent	Enabler
N/Aa	Completing laboratory tests/ patient factors	Frequent	Barrier

^aThis was not one of the TDF domains but was considered a relevant theme