Strata based on Regions, Income, and Urbanicity
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Strata based on Regions, Income, and Urbanicity. Regions. 1. 2. 3. 4. 5. Size (within size counties listed by urbanicity & Income ). 2. 3. 4. 5. 2. 3. 4. 5. 2. 3. 4. 5. 1. 1. 1. 1. 1. 2. 3. 4. 5. 2. 3. 4. 5.

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Regions

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Regions

Strata based on Regions, Income, and Urbanicity

Regions

1

2

3

4

5

Size

(within size counties listed by urbanicity & Income)

2

3

4

5

2

3

4

5

2

3

4

5

1

1

1

1

1

2

3

4

5

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


Brazilian sampling structure

Brazilian Sampling Structure

  • Sample size N=2,600 (<=18yrs) & 400 (14 -17 yrs)

  • We need (2,600 / 8) = 325 Census Sectors (CS)

  • Total no. of Counties = 163

  • 14 Counties are Self Representing = 67 CS

  • We need 258 CS = (325-67) OR 129 counties 2 CS per county

  • 8 Interviews per CS* 2 Sectors in a county = 16 Interviews per county


Regions

  • Total number of Strata = 25+14 SR counties= 39

  • Total number of PSUs (which are your sectors) = 196

  • (258/2) + 67 = 129+67=196 PSUs

  • One PSU equivalent = 1,08 mill


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