Table 1. Demographic data of informants recorded at Head Maralla.

Age group	Informants	Male	Percentage	Female	Percentage
40–50	14	10	13.69	04	14.81
51–60	22	15	20.54	07	29.97
61–70	33	24	32.87	09	33.31
71–80	26	20	27.39	06	27.22
>80	05	04	5.47	01	3.70
Total	100	73		27
Educational background		levels		Informants
Illiterate or primary pass (5 years)		School		42
Middle pass (8 years)		Middle School		07
Matric (10 years)		High School		21
Undergraduate (14 years)		College		21
Graduate (16 years) or above		University		09