| Subject | English | Portuguese |
| med., pharma., R&D. | masked study | cego |
| med., pharma., R&D. | masked study | ensaio cego |
| med., pharma., R&D. | masked study | mascarado |
| pharma. | Masked study | Estudo mascarado |
| med., pharma., R&D. | masked study | oculto |
| med., pharma., R&D. | masked study | estudo cego |
| med., pharma., R&D. | masked study | anónimo |
| med., pharma., R&D. | single-masked study | ensaio cego |