Table 1.

Baseline Probability and Cost Assumptions for Influenza: Testing-Treatment Model

Variable	Baseline Assumption	Sensitivity Test Range
Cost assumptions
Cost of diagnostic test, $	20.00	5–30
Benefits of recovery, $	177.20	*
Additional physician visit for drug reaction, $	40.48	32.38–48.54
Complication with hospitalization, $	8,960.20	7,175–10,763
Medication costs (full course of therapy)
Amantadine, $	10.50	8.40–12.60
Rimantadine, $	24.08	19.26–28.90
Zanamivir, $	49.35	39.48–59.22
Oseltamivir, $	61.00	48.80–73.20
Probability assumptions
Test sensitivity, %	72.5	50–95
Test specificity, %	90.0	80–00
Probability of drug side effect, %	3.0	0–6
Probability of influenza complication, %	0.5	0.3–5

* For benefits, a threshold analysis was performed (see Figure 3 ▶ and text).