Table 6. One-Way Sensitivity Analyses of Clinically Significant Outcomes.
| ICER (ΔC/ΔE, $), 4 mo | ICER (ΔC/ΔE, $), 12 mo | |||
| Parameter Varieda | B-A | C-B | B-A | C-B |
| Cocaine Use | ||||
| Occasionsb Used, past 30 days - 12 | $11 | $50 | $6 | $33 |
| Occasionsb Used, past 30 days - 15 | $15 | $59 | $7 | $36 |
| Episodes per Day, past 30 days - 1 | $116 | $792 | $97 | $524 |
| Episodes per Day, past 30 days - 0.5 | $83 | $558 | $73 | $410 |
| Cocaine Free Days, past 30 days - 3 weeks | $51 | $349 | $26 | $168 |
| Cocaine Free Days, past 30 days - 85% free | $413 | $4,712 | $47 | $303 |
| Alcohol Consumption | ||||
| Drinks per Day, past 7 days - 4 | D | $1,291 | $176 | $6,282 |
| Drinks per Day, past 7 days - 1 | $57 | $253 | $38 | $299 |
Abbreviations: ICER, incremental cost effectiveness ratio, which is the difference in cost divided by the difference in effectiveness as compared with the next least costly intervention and indicates cost per additional outcome achieved; A, SI intervention; B, WWE intervention; C, 4ES intervention.
a
Indicates the outcome achieved in the analysis.
b
Occasions = days used * times per day.