Table 1.

Characteristics of platelet recipients

	Control Group (n=26)	ATR Group (n=37)	P
Age, years, median (IQR)	53 (43–61)	49 (31–58)	0.13
Male, n (%)	18 (69)	25 (68)	1
Primary Diagnosis, n (%)
Acute Luekemia	15 (57.7)	18 (48.7)	0.6
HSCT	3 (11.5)	8 (21.6)	0.5
Other hematologic	2 (7.7)	5 (13.5)	0.7
Solid tumor	1 (3.9)	4 (10.8)	0.4
Lymphoma	3 (11.5)	2 (5.4)	0.6
Non-oncology medical	1 (3.9)	0 (0)	0.4
Surgical	1 (3.9)	0 (0)	0.4
Peripheral Blood Cell Counts, median (IQR)
Absolute neutrophil count	842 (0–4100)	244 (0–629)	0.08
Absolute eosinophil count	0 (0–5)	0 (0–15)	0.9
Absolute basophil count	0 (0–0)	0 (0–0)	0.9
Prior Transfusions, median units (IQR)
Platelet (apheresis units)	18 (6–31)	7 (2–26)	0.06
RBC	22 (10–44)	14 (6–23)	0.06
Number of Prior ATRs, median (IQR)	0 (0–0)	0 (0–1)	0.002

IQR= Interquartile range

HSCT= Hematopoietic Stem Cell Transplant