Table 3.
Input valuations and results for variable cost components by intervention arm (US $).
| Variable costs | Unit costs | Phone (n=284) | ITM (n=276) | P value | ||||
| Mean (SD) in $ | ||||||||
| Provider perspective | ||||||||
|
|
|
Counselor cost | $28.81/hour | 49.58 (33.35) | 45.46 (31.50) | .133 | ||
|
|
|
Internet access | $0.37/hour | n/a | 0.58 (0.40) |
|
||
|
|
|
Telephone charges | $2.13/hour | 3.67 (2.47) | n/a |
|
||
|
|
|
Facility costs | rent basis | n/a | 0.99 (0.69) |
|
||
|
|
|
Facility costs | CPT basis | n/a | 226.61 (148.08) |
|
||
|
|
Total provider variable costs | |||||||
|
|
|
Calculated based on costs to rent space |
|
53.25 (35.82) | 47.04 (32.59) | .032 | ||
|
|
|
Calculated based on costs for medical visit |
|
53.25 (35.82) | 272.65 (178.29) | <.001 | ||
| Participant perspective | ||||||||
|
|
|
Time in counseling | Hourly wage | 28.36 (27.83) | 25.81 (21.24)a | .224 | ||
|
|
|
Travel time cost | Hourly wage | n/a | 33.38 (101.27)a |
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||
|
|
|
Mileage costs | $0.54/mile | n/a | 60.59 (239.93)a |
|
||
|
|
|
Pharmacotherapy | out-of-pocket costs | 113.87=16,852 total (n=148) | 92.21=6544 total (n=150) |
|
||
|
|
|
59.34/participant | 51.04/participanta |
|
||||
|
|
Total participant variable costs | |||||||
|
|
|
Without pharmacotherapy | 28.36 (27.80) | 119.44a (341.00) | <.001 | |||
|
|
|
With pharmacotherapy | 75.29 (169.10) | 124.55a (259.10) | .008 | |||
|
|
Combined societal (modified) perspective | |||||||
|
|
|
Rent basis | 81.61 (58.70) | 166.04a (347.90) | <.001 | |||
|
|
|
Facility CPT basis | 81.61 (58.70) | 390.20a (415.40) | <.001 | |||
an=271: 5 additional ITM participants had missing self-reported participant perspective cost data.