Table 1.

Characteristics of the study population in the six different study sites

	Eti-Osa	Ibeju	Kosofe	Ikorodu	Oredo	Ikpoba-Okha	Total
Number	44	57	71	82	171	11	436
Percentage (%)	10.09	13.07	16.28	18.81	39.22	2.53	100
Age
Mean	22	18	25	17	26	33
Range	[4–62]	[2–65]	[2–85]	[1–67]	[1–85]	[10–79]
Sex
Male	28	19	36	38	73	3	197
Female	16	38	35	44	98	8	239

Number: the figure of subject surveyed in each study sub-location