Table 3.

Unadjusted respiratory-related costs by index therapy cohort

	Tiotropium (N = 1561)		Fluticasone/salmeterol (N = 2976)		P-value
	Mean	SD	Mean	SD
Inpatient stay costs	1646	11,074	1248	8368	0.213
Medical costs	2671	13,334	1958	8956	0.058
Outpatient pharmacy costs	1080	1096	974	1124	0.002
Health care costs	3751	13,462	2932	9137	0.031

Note: All costs were measured in 2006 US dollars and during follow-up period. Inpatient stay costs are costs associated with inpatient facility stays; medical costs are costs for all medical services, including inpatient costs; health care costs are the sum of medical and outpatient pharmacy costs.

Abbreviation: SD, standard deviation.