| Subject | English | Portuguese |
| comp., MS, Braz. | reference group | grupo de referência (A group that is associated with another group so that their properties and the properties of the groups and fields they contain always match. If the properties of one group are changed, the other group is updated automatically) |
| health., el. | reference group of the population | grupo de referência da população |
| el. | reference group pilot | onda piloto de grupo primário |