Descriptors for blinding status of the study in titles of analysed trials (N=116)
| Blinding status descriptors | n (%) |
| Double-blind | 89 (76) |
| Blinded | 8 (6.8) |
| Single-blind | 6 (5.1) |
| Triple masked | 3 (2.6) |
| Triple-blind | 3 (2.6) |
| Open label | 1 (0.9) |
| Observer blinded | 1 (0.9) |
| Blinded evaluation | 1 (0.9) |
| Blinded trial | 1 (0.9) |
| Non-blinded | 1 (0.9) |
| Double masked | 1 (0.9) |
| Masked | 1 (0.9) |