Differences in individual adherence components between arms
There were significant differences between study arms for some adherence components, with higher adherence for the Enhanced arm when compared to the Core arm for triage (OR = 2.0, 95% C.I. 1.11–7.32), referral type (OR = 2.3, 95% C.I. 1.32–3.94), and check referral uptake (OR = 4.5, 95% C.I. 2.35–8.73). For all components, there was no significant interaction between implementation arm and step allocation (Across both study arms there were significantly more referrals made for step 3 and step 4 than step 2 (