Respective effects of phlebotomy losses and erythropoietin treatment on the need for blood transfusion in very premature infants

Table 3 Influence of different factors on the need for transfusion after 15 days of life

Variables	Odds ratio	95% IC	p
Gestational age at birth*	0.18	0.03-0.96	0.044
Intrauterine growth retardation	0.63	0.06-6.94	0.704
Gender (boy)	0.22	0.03-1.92	0.171
Volume of phlebotomy losses (mL/kg/d)	1.17	1.01-1.36	0.032
Treatment with erythropoietin	0.15	0.01-1.60	0.118

*The variable “gestational age at birth” was divided into the following classes: <28 weeks, 28–29.9 weeks and 30–32 weeks.

ISSN: 1471-2431