Characteristics of the trials and sample
| Reference | Country | Drug | Sample | Groups | Age | Phase | Design | Duration | Dosage | Outcome |
| Authors, year | Countries where the trial was carried out | Drug used | Number of participants | Number of participants in each group | Age (SD or max/min) | Phase of the clinical trial | RCT, non-RCT, open label or blinded, crossover | Duration of the trial | Dosage of drug in each group | Measures of trial outcomes |
RCT, randomized contolled trial; SD, standard deviation.