1. Strata based on Regions, Income, and Urbanicity1 2 3 4 5
Size
(within size counties listed by urbanicity & Income) 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
Counties selected systematically with PPS. Within each county 2 census sectors selected.
Census Sectors Selection
67 Census Sectors from 14 Self Representing Counties
258 Census Sectors from the remaining 129 Counties
Households listed and selected using random number table., 8 per census sector
Total of 325
Census Sectors

2. Brazilian Sampling Structure
Sample size N=2,600 (<=18yrs) & 400 ( yrs)
We need (2,600 / 8) = Census Sectors (CS)
Total no. of Counties = 163
14 Counties are Self Representing = 67 CS
We need 258 CS = (325-67) OR counties 2 CS per county
8 Interviews per CS* 2 Sectors in a county = 16 Interviews per county

3. Total number of Strata = 25+14 SR counties= 39
Total number of PSUs (which are your sectors) = 196
(258/2) + 67 = =196 PSUs
One PSU equivalent = 1,08 mill