| Subject | English | Portuguese |
| med., pharma., R&D. | blind study | cego |
| med., pharma., R&D. | blind study | mascarado |
| pharma. | blind study | estudo cego |
| pharma. | blind study | estudo mascarado |
| med., pharma., R&D. | blind study | oculto |
| med., pharma., R&D. | blind study | ensaio cego |
| med., pharma., R&D. | blind study | anónimo |
| med., pharma., R&D. | double-blind study | duplamente anónimo |
| med., pharma., R&D. | double-blind study | duplamente oculto |
| med., pharma., R&D. | double-blind study | ensaio duplo-cego |
| med., pharma., R&D. | double-blind study | duplamente cego |
| med., pharma., R&D. | double-blind study | com dupla ocultação |
| med., pharma., R&D. | single-blind study | ensaio cego |