Table.

Studies of Neonates Weighing <1,500 g Reporting Laboratory Phlebotomy and Red Blood Cell Transfusion Data

Authors	N	Infant Study Population	Postnatal Age	Mean Birth Weight (g)	Weekly Phlebotomy Loss (mL/kg)	Weekly RBC Transfusion Volume (mL/kg)	Correlation Phlebotomy versus Transfusion r†
Blanchette and Zipursky, 1984 (4)	57	<1,500 g	Birth to 6 wk	Not reported	11.1	6.7	0.82
Obladen et al, 1988 (5)*	60	<1,500 g	Birth to 4 wk	1,161	12.7	10.6	0.91
Ringer et al, 1998 (6)	270	Hospital A: <1,500 g	Birth to 2 wk	1,073	8.2	15.7	Not reported
		Hospital B: <1,500 g	Birth to 2 wk	978	21.4	16.8	Not reported
Alagappan et al, 1998 (7)	80	<1,250 g	Birth to 2 wk	948	20.7	21.7	Not reported
Maier et al, 1998 (8)*	79	500 to 1,000 g	Birth to 9 wk	800	4.7	4.9	Not reported
Widness et al, 2005 (9)	47	500 to 1,000 g + umbilical artery catheter	Birth to 2 wk	734	36.7	22.2	0.73
			Mean	949	16.5	14.1	0.82
			SD	161	10.8	6.9	0.09

^*European study

^†Correlation coefficient for phlebotomy volume versus transfusion volume

RBC=red blood cell, SD=standard deviation