Table 1.
Characteristics and sample size of each survey.
| Sample | Organization | Method | Interviewer | Age | Originally designed for religion | Representative of Brazilian regions | |
|---|---|---|---|---|---|---|---|
| WVS 2014 | 1496 | Non-profit | Face-to-face | Yes | > 18 | Yes | Yes |
| University Group 2006 | 2346 | University | Face-to-face | Yes | > 18 | No | Yes |
| 2016 Online | 1196 | Non-profit | Online | No | > 18 | Yes | Yes |
| DataFolha 2016 | 2828 | Private | Face-to-face | Yes | > 16 | Yes | Yes |
| Pew 2010 | – | Non-profit | Face-to-face | Yes | All ages | No | Yes |
| Census 2010 | 67 million | Governamental | Face-to-face | Yes | All ages | No | Yes |