. Author manuscript; available in PMC: 2009 Oct 6.

Published in final edited form as: Pediatr Blood Cancer. 2008 May;50(5):1006–1012. doi: 10.1002/pbc.21336

TABLE I.

Baseline Characteristics by Treatment (Mean ± SD)

Parameter	No Transfusion/ No CS (N=61)	CS only (N=17)	Transfusion only (N=29)	Transfusion/CS (N=22)
Age (years)	13 ± 6	11 ± 4	14 ± 5	10 ± 4^*
Prior ACS #	3.3 ± 4.0	2.7 ± 2.0	4.8 ± 3.3	6.4 ± 4.9^$
Prior HTN	7%	12%	10%	27%
Asthma	22%	25%	25%	55%^†
HbF %	7.9 ± 6.8	8.8 ± 7.2	4.1 ± 4.1^†	5.3 ± 5.1
Hydroxyurea	11%	19%	48%^‡	18%^*

P < 0.05 compared transfusion only

P < 0.01 compared to no transfusion/no CS and P < 0.05 compared to CS

^†

P < 0.05 compared to no transfusion/no CS

^‡

P < 0.001 compared to no transfusion/no CS; CS indicates corticosteroids; ACS, acute chest syndrome; HTN, hypertension; HbF, fetal hemoglobin.