Table 5.
Cost-Effectiveness Analysis for Decreases in Barriers Scores
| Group 2 (Assessment-only) N=332 |
Group 3 (TBI) N=290 |
|
|---|---|---|
| Number (%) experiencing a desired outcome (a pre to post decrease in number of barriers) |
149 (44.9%) | 176 (60.7%) |
| Mean call time per participant | 5.24 minutes | 6.96 minutes |
| Mean call time per participant with a desired outcome |
(5.24×332)/149 = 11.68 minutes |
(6.96×290)/176 = 11.47 minutes |
| Mean cost§ of printing and mailing tailored print material per participant |
NA -- no print material sent | $0.14 |
| Mean cost of printing and mailing tailored print material per participant with a desired outcome |
NA -- no print material sent | $0.14×290/176 = $0.23 |
| Mean personnel cost* per participant @$36.4/hr |
($36.40/60)×5.24 = $3.18 | ($36.40/60)×6.96 = $4.22 |
| Mean personnel cost per participant with a desired outcome |
($3.18×332)/149 = $7.09 | ($4.22×290)/176 = $6.95 |
| Mean total cost** of delivery per participant |
$3.18 | $4.22+$0.14 = $4.36 |
| Cost effectiveness ratio: Mean total cost of delivery times the number of participants divided by the number of participants with a desired outcome |
($3.18×332)/149 = $7.09 | ($4.36×290)/176 = $7.18 |
NOTE:
Cost of ink: HP LaserJet 4250/4350 smart print cartridge, black (20,000-pages) $224.00 ⇒ $.0112/page. Staff time to retrieve the printed material and place it in an envelope were not included in this calculation.
Cost of paper: HP MultiPurpose™ Paper, 8-1/2 × 11, Case (500 Sheets/Ream ×10) $ 40.00 ⇒ $.0080/page.
Mean number of pages per participant based on Mean number of Barriers @ baseline.
Mean cost of printing per participant ⇒ ($.0112 + $.0080) × 1 = $.0192.
Cost of mailing: 1/3 of CIS accruals receive a .5oz letter/envelope resulting in the need for extra postage to cover the additional weight (source, Amy Gaier 9/2/05).
Mean cost of mailing per participant ⇒ $.37 / 3 = $.1233.
Mean cost of printing and mailing per participant ⇒ $.0192 + $.1233 = $.1425 rounded to $.14.
NOTE:
Personnel cost was computed as the national average wage, fringe, and overhead for CIS Information Specialists -- $36.40/hour. (Linda Squiers, personal communication, 8/11/05).
NOTE:
Total cost is the combined cost of mailing print material and personnel cost.