Table 1.

Demographic and clinical characteristics of SCD and non-SCD patients

	SCD Patients (n=36)	Non-SCD Patients (n=18)	P-Value
Mean Age, yrs (SD)	27.7 (8.2)	39.7 (13.0)	0.0004
Race, n (%)			<0.0001*
Caucasian	0/36 (0)	8/18 (44.4)
African American	36/36 (100)	9/18 (50)
Hispanic	0/36 (0)	1/18 (5.6)
Marital Status, n (%)			0.0295
Married	4/36 (11.1)	7/18 (38.9)
Unmarried	32/36 (88.9)	11/18 (61.1)
Priapism History
Age of Onset, yrs (SD)	17.93 (7.6)	34.06 (15.0)	0.0002
Overall Duration, yrs (SD)	9.8 (7.0)	5.6 (9.2)	0.0026
Episode Frequency, n (%)
Daily (1–7 episodes/wk)	20/36 (55.6)	10/18 (55.6)	1.0000
Monthly (<4 episodes/mo)	15/36 (41.7)	5/18 (27.8)	0.3191
Episode Duration†, n (%)	n = 35	n = 15
≤2 hrs (“very minor”)	30/35 (85.7)	4/35 (26.7)	0.0001
2–5 hrs (“minor”)	3/35 (8.6)	1/35 (6.7)	1.0000
5+ hrs (“major”)	2/35 (5.7)	10/35 (66.7)	0.0001
Erectile Dysfunction‡, n (%)	n = 32	n = 16
	13/32 (40.6)	3/16 (18.8)	0.1296

SCD = sickle cell disease, n = number, yrs = years, wk = week, mo = month, SD = standard deviation,

^*combined Caucasian and Hispanic groups for Fisher’s exact test,

^†values absent for 4 patients,

^‡values absent for 6 patients