Table 1.

Geographical sampling from the Sultanate of Oman

Governorate	Valid 24-hour urine collections	%
Muscat	67	11.8
Dhofar	79	13.9
Al-Dakhlia	45	7.9
North Sharqiah	36	6.3
South Sharqiah	45	7.9
North Batina	81	14.2
South Batina	53	9.3
Al-Dhahirah	46	8.1
Al Buraymi	84	14.8
Musandam	9	1.6
Al-Wasta	24	4.2
Total	569	100.0