Table 3.
Marginal costs
| Variable | n | Unit cost | Total cost |
|---|---|---|---|
| Generalist sites | |||
| Screen | 77 | $1.68 | $129.11 |
| Feedback | 29 | $3.43 | $99.46 |
| Brief intervention | 29 | $7.25 | $210.19 |
| Feedback only (no brief intervention) | 8 | $3.43 | $27.44 |
| Total cost | $466.20 | ||
| Marginal cost per brief intervention needed (n = 77) | $6.05 | ||
| Specialist sites | |||
| Screen | 83 | $1.37 | $113.76 |
| Feedback | 6 | $2.63 | $15.76 |
| Brief advice | 6 | $5.75 | $34.51 |
| Handoff to behavioral health counselor | 6 | $9.27 | $55.59 |
| Brief intervention | 6 | $8.29 | $49.74 |
| Feedback only (no brief advice, handoff, or brief intervention) | 9 | $2.63 | $23.64 |
| Feedback, brief advice, and handoff only (no brief intervention) | 15 | $17.64 | $264.66 |
| Total cost | $557.66 | ||
| Marginal cost per brief intervention needed (n = 83) | $6.72 |