Table 3.

Incremental yearly expenditure per 100 hypothetic patients with vs without critical inhaler errors

	COPD			Asthma
	Yearly absolute difference in health care resource use for 100 patients with vs without errors	Unitary cost (€)	Yearly difference in health care cost for 100 patients (€)	Yearly absolute difference in health care resource use for 100 patients with vs without errors	Unitary cost (€)	Yearly difference in health care cost for 100 patients (€)
Hospital admissions	11.5	1,600.00	18,400.00	19	1,832.00	34,808.00
Emergency department visits	13	344.26	4,475.38	26.5	344.26	9,122.89
Antimicrobic courses	19.5	13.04	254.28	4.5	13.04	58.68
Corticosteroid courses	47	6.68	313.96	21.5	5.34	114.81
Total health care costs			23,443.62			44,104.38
Difference/patient/year			234.44			441.04

Abbreviation: COPD, chronic obstructive pulmonary disease.