Table 2. Representative quotations from Theme 1 reflecting ‘Physical Capability’ of the COM-B model.

Theme 1: Low priority for surgical antimicrobial prophylaxis prescribing skills.
Subtheme	TDF Domain	Illustrative quotes	Barrier or Enabler?
Surgical technique of greater importance	Skills	“The thing that’s going to reduce the infection rates is technique.” (F6, public neurosurgeon)	Barrier
		“I don’t think that giving them more antibiotics makes the infections less likely… a lot of it has to do with my technique… I don’t feel that I can overcome my failings that much with antibiotics.” (F4, public colorectal surgeon)
Deskilling surgeons		“We were discouraged from [prescribing antibiotics] and discouraged from doing the fluids because we were taking it away from the residents. Yeah, de-skilling the residents.” (F10, public anaesthetist)	Barrier