Table 4.

Crude (unadjusted) rates of healthcare resource utilization (HCRU) stratified by C1-INH(IV) use/non-use and by CVAD use/non-use

	HCRU n (%) of patients with any HCRUa
	Hospitalization	ED Visit
Overall (n = 521b)	79 (15.2)	271 (52.0)
By C1-INH(IV) use
C1-INH(IV) users (n = 336)	68 (20.2)	191 (56.8)
Non-C1-INH(IV) users (n = 185)	11 (5.9)	80 (43.2)
By CVAD use
CVAD users (n = 18)	5 (27.8)	14 (77.8)
Non-CVAD users (n = 503)	74 (14.7)	257 (51.1)

CVAD central venous access device, ED emergency department, HCRU healthcare resource utilization

^aDuring study period; percentages reflect row %

^bTotal HCRU analysis population