Deviation from protocol
Pain
There were a few deviations from the study protocol. Due to physical space limitations in most participants' homes, the gait speed test was replaced with Rockwood. Besides, the post-intervention outcome assessments were conducted by a research nurse over the phone in both study groups due to COVID-19 restrictions. Also, details of care received by the TAU were not collected due to the impact of the COVID-19 pandemic on staff time and availability in the participating GP centres. Due to the same reason, we did not hold focus group sessions with staff/practitioners to collect their views on the intervention; however, an informal discussion with ANPs reflected the findings reported in the qualitative findings section. Moreover, it was planned to assess Self-Reported Pain (e.g., Geriatric Pain Measure Short Form), however; after discussion amongst the team, it was decided not to overwhelm participants with too many outcome measure questions, and therefore it was excluded.