Variable	Subgroups	Number of respondents	Percentages
Age (years)	20 - 29	89	30.2
	30 - 39	116	39.3
	40 - 49	63	21.4
	50 - 59	22	7.5
	60 and above	5	1.7
Gender	Male	141	47.8
Gender	Female	153	51.9
Religious affiliation	Christianity	117	39.7
Religious affiliation	Islam	178	60.3
Duration of marriage (years)^*	0 - 4	138	46.8
	5 - 9	59	20.0
	10 - 14	45	15.3
	15 - 19	14	4.7
	≥20	36	12.2
Sector	Health	80	27.1
	Education	94	31.9
	Financial	46	15.6
	Security	45	15.3
	Others	30	10.2
Highest level of education	Nil	4	1.4
	Basic	19	6.4
	Secondary	63	21.4
	Tertiary	209	70.8
Number of children^*	0	51	17.3
	1	85	28.8
	2	74	25.1
	3	48	16.3
	4 or more	35	11.9
Initial source (s) of information on SCD^**	School	86	29.2
	Friends	47	15.9
	Media	135	45.8
	Health workers	111	37.6
How respondents got to know their sickling status n = 125^***	Request from health worker	65	52.0
	Mandatory screening	6	4.8
	Screening prior to blood transfusion	27	21.6
	Voluntary request	27	21.6