Table 2.
Cost per recruitment method | Formula | Calculation (AU$) | Total cost (AU$) | |
Total cost |
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|
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|
|
RDS | (Number of agencies and locationsa visited*mean time spent at each location*number of study staff*cost to pay 1 study staff per hour)+number of agencies and locationsa visited*number of study staff*(mean distance traveled to location*cost per km of travel)+number participants recruited by RDS*administration time per participant*cost to pay 1 study staff per hour | (45*3*2*30)+(45*2*30*.65)+(232*0.5*30) | 13,335 |
|
WebRDS | Cost of Facebook campaign+(hours of work by 1 staff member*number of staff*cost to pay 1 study staff per hour)+number participants recruited by WebRDS*administration time per participant*cost to pay 1 study staff per hour | 430.44+((38*8)*30)+780*0.5*30 | 21,350.44 |
Per participant |
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|
RDS | Total cost of RDS/number of participants (seeds and referrals) recruited by RDS | 12,390/232 | 53.41 |
|
WebRDS | Total cost of WebRDS/number of participants (seeds and referrals) recruited by WebRDS | 21,250.44/780 | 27.24 |
a Number of agencies and locations visited were n=25 and n=20, respectively.