Table 2 Methodological characteristics of studies
Author | Number of patients | Randomization | Concealment | Blinded | Withdraw | Single or multicenter | Balance of two groups | Total modified Jadad score |
|---|---|---|---|---|---|---|---|---|
Vialet et al. [49] | 20 | Randomization table | Envelopes concealment | Single Blinded | 0 | Single center | Yes | 7/7 |
Harutjunyan et al. [50] | 32 | Computer randomly | Not reported | Not reported | 0 | Single center | Yes | 3/7 |
Francony et al. [51] | 17 | Randomization table | Envelopes concealment | Single blinded | 0 | Multi-center | Yes | 7/7 |
Cottenceau et al. [52] | 56 | Based on blocks of four | Envelopes concealment | Double blinded | 0 | Single center | Yes | 7/7 |