Implementing the World Mental Health Survey Initiative in Portugal – rationale, design and fieldwork procedures

Table 1 Number of localities randomly selected (stratified by region and locality size)

Region	Size of number of inhabitants in the localities (PSU)
	Less than 2,000	2,000 – 9,999	10,000 – 19,999	20,000 – 99,999	100,000 or more
North	53	15	9	20	2
Centre	48	9	5	6	1
Lisbon	12	18	11	17	2
Alentejo	10	8	2	2
Algarve	6	2	2	2
Total	262

ISSN: 1752-4458