TABLE I.

Demographics and Disease Characteristics of Study Cohort (n=57)

Variable	Result
Mean Age (years)	10.7 (± 4.8)
Gender
Female	30 (52.6%)
Genotype
HgbSS	38 (65.7%)
HgbSC	13 (22.8%)
HgbSβ+thal	4 (7.0%)
Other	2 (3.5%)
Frequency of Prior Painful Events#
Infrequent	31 (54.4%)
Frequent	23 (41.8%)
Unreported	3 (5.5%)
Initial Median Pain Score in ED	8.0 (IQR 5-9)
ED Discharges	14 (24.6%)
Inpatient Discharges	43 (75.4%)
Mean Length of Stay (days)	2.0 (±1.7)

^#Infrequent = <3 pain events requiring inpatient hospitalization in 3 years prior to study entry

Frequent = ≥3 pain events requiring inpatient hospitalization in 3 years prior to study entry