TABLE 1.

Characteristics of study population and various clinical study facilities across Nigeria, 2019 (N = 120).

Variables		Frequency	%
Age in years (n = 105)
	≤20	14	13.3
	21–30	11	10.5
	31–40	33	31.4
	41–50	27	25.7
	>50	20	19.1
Gender (n = 120)
	Male	59	49.2
	Female	61	50.8
Occupation (n = 120)
	Doctor	70	58.3
	Nurse	17	14.2
	Civil Servant	6	5.0
	Teacher	2	1.7
	Business	5	4.2
	Technician	1	0.8
	Youth Corper	1	0.8
	Student	17	14.2
	Unemployed	1	0.8
Marital status (n = 120)
	Married	87	72.5
	Single	33	27.5
Level of education (n = 118)
	None	1	0.9
	Primary	4	3.4
	Secondary	15	12.7
	Undergraduate	22	18.6
	Postgraduate	76	64.4
History of hydroxyurea use by patients (n = 33)
	Yes	16	48.5
	Yes, but stopped using HU	4	12.1
	No	3	9.1
	Missing	10	30.3
Level of health care facility (n = 119)
	Secondary	17	14.3
	Tertiary	102	85.7
Type of health care facility (n = 119)
	Public	116	97.5
	Private	3	2.5