Table 4.

Results of sensitivity analysis

	Estimated costs and utilities			ICER ($/QALY)*
	-50%	Baseline	+50%	-50%	Baseline	+50%
Costs ($)
Gargling (one time)	0.2	0.4	0.6	5,000	31,800	58,600
Physician consultation because of URTI	8.6	17.2	25.9	33,900	31,800	29,600
Medication to treat URTI	0.6	1.2	1.8	31,900	31,800	31,700
Lost productivity due to severe URTI	48.9	97.7	146.6	41,400	31,800	22,100
Utility
Utility in moderate influenza	0.32	0.63	0.95	21,000	31,800	64,800
Utility in severe influenza	0.12	0.24	0.36	29,900	31,800	33,900

ICER = incremental cost-effectiveness ratio.

*ICERs for each group are rounded to the nearest $100.