Table 1. Base and optimised estimates for carbon footprint per patient by category for each pathway (kgCO₂e).

Scenario	Type	Pathway 1	Pathway 2	Pathway 3
Base case—using most conservative assumptions	Travel	6.62	17.09	12.67
	Procedure	5.46	3.87	3.87
	Pharma	0.02	0.01	0.01
	Total	12.10	20.98	16.56
Optimised case	Travel	2.52	7.99	1.36
	Procedure	3.06	1.56	1.56
	Pharma	0.02	0.01	0.01
	Total	5.60	9.57	2.94

CO₂ecarbon dioxide equivalent