Table 1.
Name and year | Study design | Herb assayed | Control group | Blinding | Randomisation | Sample size discussed |
---|---|---|---|---|---|---|
Mathijssen, 20025 | Before and after | No | No | No | No | No |
Markowitz, 200016 | Before and after | Yes | No | No | No | No |
Burstein, 200014 | Before and after | Yes | No | No | No | No |
Durr, 200020 | Before and after | No | No | No | No | No |
Piscitelli, 200021 | Before and after | Yes | No | No | No | No |
Mai, 20037 | Before and after | Yes | No | No | No | Yes |
Hebert, 200423 | Before and after | Yes | No | No | No | No |
Bauer, 20036 | Before and after | Yes | No | No | No | Yes |
Hall, 20038 | Before and after | Yes | No | No | No | Yes |
Jiang, 200422 | Before and after | Yes | No | No | Yes | Yes |
Johne, 20024 | Before and after | Yes | No | No | No | Yes |
Wang, 200110 | Before and after | Yes | No | No | No | Yes |
Wang, 20029 | Before and after | Yes | No | No | No | No |
Markowitz, 200324 | Before and after | No | No | No | No | Yes |
Dresser, 200325 | Before and after | No | No | No | No | No |
Roby, 200111 | Before and after | Yes | No | No | No | No |
Wenk, 200412 | Before and after | No | No | No | No | No |
Sugimoto, 200115 | Crossover | No | Yes (placebo) | Yes | Yes | No |
Pfrunder, 200317 | Crossover | Yes | Yes | No | Yes | No |
Wang, 200418 | Crossover | No | Yes (placebo) | Yes | Yes | No |
Morimoto, 200419 | Crossover | Yes | No | No | No | No |
Johne, 199913 | Parallel | Yes | Yes (placebo) | Yes | No | Yes |