Table 1. Goitre prevalence (GP) in schoolchildren aged 6 to 12 years from selected cities in the Sudan, June–November 2006.

City	No. of children			GP (%)
	With goitre	Without goitre	Total
Wau	255	261	516	49.4
Elfasir	435	224	659	66.0
Nyala	307	172	479	64.1
Dmazine	140	382	522	26.9
Kosti	407	117	524	77.7
Atbra	150	495	645	23.3
Khartoum	71	426	497	14.3
Khartoum north	89	430	519	17.2
Omdurman	72	517	589	12.2
Dongla	207	272	479	43.2
Port Sudan	228	426	654	34.9
Total	2361	3722	6083	38.8