Table 3.

Patient Characteristics

Characteristic	# of infusions	# of infusions with at least one event	% of infusions with at least one event	Odds Ratio	p/value*
Age
<70 years	634	67	10.6	Reference	0.9077
>70 years	37	4	10.8	1.06 (0.37, 3.02)
Race
white	645	68	10.5	Reference	0.8716
non-white	26	3	11.5	1.10 (0.35, 3.50)
Gender
female	272	33	12.1	Reference	0.3817
male	399	38	9.5	0.79 (0.47, 1.33)
Number of existing allergies					0.0264**
none	333	25	7.5	Reference
one or two	268	39	14.6	2.13 (1.23, 3.70)	0.0072***
>2 allergies	70	7	10	1.35 (0.58, 3.17)	0.4876
Ferumoxytol dose					0.4036**
≤ 2mg/kg	121	8	6.6	Reference
2–4 mg/kg	303	34	11.2	1.77 (0.69, 4.54)	0.2340
>4 mg/kg	247	29	11.7	1.86 (0.75, 4.58)	0.1787
Steroid use
None	461	44	9.5	Reference	0.1263
on decadron	183	25	13.7	1.56 (0.92, 2.67)
Pathology
Non-tumor	5.4	5	9.3	Reference	0.7069.
tumor	617	66	10.7	1.20 (0.47, 3.04)

^*P-value are obtained from the logistic generalized estimating equation model.

^**Overall P-value for the number of existing allergies, or Ferumoxytol dose.