# Available representative sample study types

| Study types                                                 | Description                                            |
| ----------------------------------------------------------- | ------------------------------------------------------ |
| `UK_REP_SAMPLE`                                             | Split on age, sex, and ethnicity                       |
| `UK_REGIONAL_REP_SAMPLE`                                    | Split on age, sex, and region                          |
| `REP_SAMPLE_UK_ENGLISH_AGE_POLITICAL_AFFILIATION`           | Split on age, sex, and political affiliation           |
| `US_REP_SAMPLE`                                             | Split on age, sex, and ethnicity                       |
| `US_REGIONAL_REP_SAMPLE`                                    | Split on age, sex, and region                          |
| `REP_SAMPLE_US_ENGLISH_AGE_POLITICAL_AFFILIATION`           | Split on age, sex, and political affiliation           |
| `REP_SAMPLE_US_ENGLISH_AGE_POLITICAL_AFFILIATION_ETHNICITY` | Split on age, sex, political affiliation and ethnicity |

For example

```
"study_type": "US_REGIONAL_REP_SAMPLE"
```