| Label | Id | |
|---|---|---|
| Social survey | PROC:MTH | |
| polls | PROC:CHV | |
| poll | PROC:CHV | |
| social survey | PROC:CHV | |
| Poll | PROC:NCI | |
| state survey | PROC:AOD | |
| state survey | PROC:CHV | |
| telephone survey | PROC:AOD | |
| telephone survey | PROC:CHV | |
| telephone surveys | PROC:CHV | |
| study of one area, group, or program | PROC:AOD | |
| multiple group designs | PROC:AOD | |
| research involving two or more groups | PROC:AOD | |
| consumer surveys | PROC:CHV | |
| research involving two or more studies | PROC:AOD |