Table A.1.
Methodological quality of enrolled studies based on Newcastle–Ottawa Scale (NOS).
| Included studies | Year | Is the definition adequate? | Representativeness of the cases | Selection of controls | Definition of controls | Comparability of both groups | Ascertainment of diagnosis | Same ascertainment method for both groups | Nonresponse rate | Total scores |
|---|---|---|---|---|---|---|---|---|---|---|
| An W | 2020 |  |
|
|
|
|
|
|
|
8 |
| Chen R | 2020 | |
|
|
|
– | |
|
|
7 |
| Chen T | 2020 | |
|
|
|
– | |
|
|
7 |
| Chen TL | 2020 | |
|
|
|
– | |
|
|
7 |
| Deng Y | 2020 | |
|
|
|
– | |
|
|
7 |
| Du R | 2020 | |
|
|
|
|
|
|
|
8 |
| He X | 2020 | |
|
|
|
 |
|
|
|
9 |
| Li D | 2020 | |
|
|
|
|
|
|
|
8 |
| Li Y | 2020 | |
|
|
|
– | |
|
|
7 |
| Martín-Moro | 2020 | |
|
|
|
|
|
|
|
9 |
| Ruan Q | 2020 | |
|
|
|
|
|
|
|
8 |
| Wang D | 2020 | |
|
|
|
– | |
|
|
7 |
| Wang Ke | 2020 | |
|
|
|
– | |
|
|
7 |
| Wang Kun | 2020 | |
|
|
|
|
|
|
|
8 |
| Wang L | 2020 | |
|
|
|
– | |
|
|
7 |
| Wang Y | 2020 | |
|
|
|
– | |
|
|
7 |
| Webb G | 2020 | |
|
|
|
|
|
|
|
9 |
| Wu C | 2020 | |
|
|
|
– | |
|
|
7 |
| Xu B | 2020 | |
|
|
|
|
|
|
|
8 |
| Yang X | 2020 | |
|
|
|
|
|
|
|
8 |
| Yao Q | 2020 | |
|
|
|
|
|
|
|
8 |
| Zhang JG | 2020 | |
|
|
|
|
|
|
|
8 |
| Zhang JP | 2020 | |
|
|
|
|
|
|
|
8 |
| Zhang JX | 2020 | |
|
|
|
– | |
|
|
7 |
| Zhou F | 2020 | |
|
|
|
|
|
|
|
8 |