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government organization in the United States.
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Minimum required sample size and number of selected interview addresses
| Region | Minimum required sample | Number of selected addresses | Number of visited addresses |
|---|---|---|---|
| North-East | 317 | 634 | 461 |
| South-East | 255 | 510 | 270 |
| South | 304 | 608 | 457 |
| South-West | 209 | 418 | 390 |
| West | 177 | 354 | 265 |
| North-West | 244 | 488 | 397 |
| Center | 226 | 452 | 330 |
| Bucharest | 210 | 630 | 290 |
| Total | 1942 | 4094 | 2860 |
