Table 1.

Interview schedule using TDF and COM-B to determine themes

COM-B component identified in the behavioural analysis	Domains linking to COM-B component	Interview example questions	Themes
Capability—psychological	Knowledge (an awareness of the existence of something)	What OTC medications do you recommend, if any?	PCPs’ advice on managing RTIs in young children
Capability—physical	Skills (an ability or proficiency acquired through practice)	How do you diagnose the infection?	PCPs’ advice on managing RTIs in young children
		How do you manage the children’s cold symptoms?
		Can you tell me the process of prescribing antibiotics for RTIs in this age group?
Motivation—reflective	Social/professional role and identity (A coherent set of behaviours and displayed personal qualities of an individual in a social or work setting)	What if the parents still insist on antibiotics?	Factors influencing GPs’ management advice on antibiotic prescribing
	Beliefs about consequences (acceptance of the truth, reality or validity about outcomes of a behaviour in a given situation)	When should you advice parents to send the child back to childcare, other normal activities?	Factors influencing GPs’ management advice on antibiotic prescribing
Motivation—automatic	Emotion (a complex reaction pattern, involving experiential, behavioural and physiological elements; by which the individual attempts to deal with a personally significant matter or event)	How do you handle the situation if parents are insistent in antibiotics?	Parental anxiety affecting PCPs’ advice on treatment and management of RTIs
		Why don't you recommend over the counter medication?	Factors influencing GPs’ management advice on antibiotic prescribing
			Conflicting management advice between PCPs
Opportunity—social	Social influences (those interpersonal processes that can cause individuals to change their thoughts, feelings or behaviours)	Are you guided by parents in terms of prescribing antibiotics?	System barriers leading to lack of adherence to guidelines