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Table 3 Sample calculation of trial related travel due to short-haul flights in the CRASH-1 trial

From: Reducing the environmental impact of trials: a comparison of the carbon footprint of the CRASH-1 and CRASH-2 clinical trials

Total short-haul distance

travelled (km/yr)

Uplift factor

(%)

Emissions for short-haul flights

CO2 emitted

(t/yr)

30,249 X

109 X

0.098 kgC02/pass.km=

0.001gCH4/pass.km=

0.004 gN20/pass.km=

3.2 +

3.3 × 10-5 +

1.3 × 105

   

Total = 3.3