Table 2.
Quality assessment using Newcastle Ottawa scale.
| References | Selection | Comparability | Exposure | Total Score | Quality of the Study |
|---|---|---|---|---|---|
| Villar et al. (2020) | ** | * | *** | 6 | Fair |
| Salton et al. (2020) | **** | ** | *** | 9 | Good |
| Steroid SARI (2020) | *** | * | ** | 6 | Good |
| Petersen et al. (2020) | *** | * | *** | 7 | Good |
| Horby et al. (2021) | *** | * | *** | 7 | Good |
| Tomazini et al. (2020) | *** | * | *** | 7 | Good |
| Rashad et al. (2021) | ** | ** | ** | 6 | Fair |
| Jamaati et al. (2021) | ** | * | ** | 5 | Fair |
| Edalatifard et al. (2020) | ** | * | *** | 6 | Fair |
| Ramiro et al. (2020) | *** | ** | ** | 7 | Good |
| Tang et al. (2021) | ** | * | ** | 5 | Fair |
| Pontali et al. (2021) | **** | ** | ** | 8 | Good |
| Corral-Gudino et al. (2021) | *** | ** | ** | 7 | Good |
| Angus et al. (2020) | *** | * | ** | 6 | Good |
| Dequin et al. (2020) | *** | * | *** | 7 | Good |
| Liu J et al. (2020) | *** | * | ** | 6 | Good |
|
Ranjbar et al. (2021) Jeronimo et al. (2021) |
*** | ** | ** | 7 | Good |
| Fadel et al. (2020) | **** | ** | ** | 8 | Good |
| Nelson et al. (2021) | *** | ** | ** | 7 | Good |
| Ranjbar et al. (2021) | *** | ** | ** | 7 | Good |
| Ooi et al. (2020) | ** | * | *** | 6 | Fair |