2.9 Trial management
Trial management staff time calculations
Data available:
If trial management total staff time data are available:
(% working at site x trial management staff time total x electricity use per staff hour
x global electricity factor)
+ (% working at site x trial management staff time total x fuel use per staff hour
x heating factor)
+ (% working from home x trial management staff time total x home electricity per hour
x global electricity factor)
+ (% working from home x trial management staff time total x home fuel use per hour x heating factor)
Example in which staff work 1000 hours at UK trial management facility during trial with 10% working from home:
(90% x 1000 hours x 0.554 kWh per hour x 0.289 kg CO2 eq per kWh)
+ (90% x 1000 hours x 0.792 kWh per hour x 0.2102)
+ (10% x 1000 hours x 0.05 kWh per hour x 0.289)
+ (10% x 1000 hours x 0.792 x 0.2102)
= 311 kg CO2 eq
Default data:
(60% working at site x trial management staff time default x electricity use per staff hour
x global electricity factor)
+ (60% working at site x trial management staff time default x fuel use per staff hour x heating factor)
+ (40% working from home x trial management staff time default x home electricity per hour for laptop use
x global electricity factor)
+ (40% working from home x trial management staff time default x home fuel use per hour x heating factor)
Example in which staff work 50 hours at UK trial management facility per participant visit with 20 participant visits during trial with 40% working from home:
(60% x (50 hours x 20) x 0.554 kWh per hour x 0.289 kg CO2 eq per kWh)
+ (60% x (50 hours x 20) x 0.792 kWh per hour x 0.2102)
+ (40% x (50 hours x 20) x 0.05 kWh per hour x 0.289)
+ (40% x (50 hours x 20) x 0.792 kWh per hour x 0.2102)
= 268 kg CO2 eq
Trial management staff travel calculations
Data available:
If trial management staff travel data are available:
Mode of transport % x average round trip distance x mode of transport emission factor
x number of staff x number of visits per staff member
Example in which 100 staff travel 100km and 50% go by car and 50% by bus to trial site 3 times:
(50% x 100km x 0.2094 kg CO2 eq per km x 100 x 3)
+ (50% x 100km x 0.1271 kg CO2 eq per km x 100 x 3)
= 5,047.5 kg CO2 eq
Data not available:
Mode of transport % x default average round trip distance x mode of transport emission factor
x number of staff x number of visits per staff member
Example in which 100 staff travel 50km and 100% go by car to trial sites 3 times:
100% x 50km x 0.2094 kg CO2 eq per km x 100 x 3 = 3,141 kg CO2 eq
Note: In the first example here, it is assumed that the user has input their own data of 100km distance and 50% car and 50% bus transport. The second example then uses the default values of 100% car travel and 50km for trial site staff. The current version of the tool requires average data for all sites, rather than replicating the inputs for each site in the trial. The user will need to input the number of trial management staff and the number of times they travel to the site across all sites.