Table 4. Studies used in meta-analysis of improvement/progression rate.
| Name | Author | Sample Size | num_ control | num_ treatment | progression_ control | progression_ treatment |
| A pilot study of hydroxychloroquine in the treatment of patients with common coronavirus disease-19 (COVID 19) | Chen J, et al. [20] | 30 | 15 | 15 | 7 | 5 |
| Efficacy of hydroxychloroquine in patients with COVID-19 results of a randomized clinical trial | Chen et al. [22] | 62 | 31 | 31 | 17 | 25 |
| Treating COVID-19 with Chloroquine | Huang, et al. [23] | 22 | 12 | 10 | 11 | 10 |
| Hydroxychloroquine and azithromycin as a treatment of COVID-19 results of an open-label non- randomized clinical trial | Gautret, et al. [17] | 36 | 16 | 20 | 0 | 20 |