Table 1. Sample size for each site and respective standard error.
| Site | Sample size | Standard error (%) |
|---|---|---|
| Manaus | 300 | 3.7 |
| Salvador | 200 | 4.7 |
| Campo Grande | 180 | 5.0 |
| Porto Alegre | 200 | 4.8 |
| São Paulo | 400 | 3.1 |
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