Table 1.

Table summarising the net CO₂e saving for each workstream and equivalent kilometres driven in a car⁷

Workstream	Net CO2e saving	Original method as per grant application	Adaptations implemented	Equivalent kilometres driven in a standard (non-electric) car
Workstream 1	12 tonnes	Face-to-face trial management, oversight committee, patient experience, site feasibility and study launch meetings	Virtual trial management, oversight committee, patient experience, site feasibility and study launch meetings. Queries and actions resolved via email	37 015
Workstream 2	20 tonnes	In-person observations; real-time field notes; face-to-face interviews; regular researcher travel to base hospitals and satellite haemodialysis units	‘Photovoice’; virtual interviews; reduced researcher travel to base hospitals and satellite haemodialysis units	61 692
Workstream 3	0.32 tonnes	Face-to-face interviews; in-person attendance at, and observations of, trial management, investigator and site initiation meetings; face-to-face provision of feedback to ‘recruiters’ at participating units	Virtual interviews; remote attendance at, and observations of, trial management, investigator and site initiation meetings; virtual provision of feedback to ‘recruiters’ at participating units	987
Other benefits	104 tonnes	In-person conference attendance; onsite working	Virtual conference attendance; home-working	320 797
Total	136 tonnes	–	–	419 503

CO₂e, carbon dioxide equivalent.