Table 2.
Detailed costs of recruitment strategies.
| In-persona (n=39) | Mailings (n=11) | Social media (n=27) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cost per Item | Units | Cost per unit | Total costb | Units | Cost per unit | Total costb | Units | Cost per unit | Total costb |
| Staff timec: in-person recruitment | 472 | 24 | 11328 | -- | -- | -- | -- | -- | -- |
| Staff time: phone eligibility screening | -- | -- | -- | 21 | 24 | 504 | 83 | 24 | 1992 |
| Staff time: in-person eligibility screening | -- | -- | -- | 3.5 | 24 | 84 | 21 | 24 | 504 |
| Staff time: managing social media advertisements | -- | -- | -- | -- | -- | -- | 140 | 24 | 3360 |
| Staff time: preparing mailings | -- | -- | -- | 48 | 24 | 1152 | -- | -- | -- |
| Social media advertisements | -- | -- | -- | -- | -- | -- | -- | -- | 3164 |
| Postage for mailings | -- | -- | -- | 1320 | 0.49 | 647 | -- | -- | -- |
| Overall Cost | |||||||||
| Total cost | 11328 | 2387 | 9020 | ||||||
| Cost per participant | 290 | 217 | 334 | ||||||
| Prospective participants reached | |||||||||
| Total number of clicks | n.a | n.a | 1202906 | ||||||
| Patients approached | 127 | n.a | n.a | ||||||
| Letters mailed | n.a | 1320 | n.a | ||||||
a
Excludes two people recruited in-person from the Children’s Hospital clinic, as staff time could not be calculated
b
In US dollars
c
Staff time is calculated at $24 per hour (including fringe benefits) for graduate student workers for all positions