Table 2.
Quality ratings of included studies using the modified Newcastle-Ottawa Scale
| Study | Representativeness | Sample Size | Non-Respondents | Valid Measurement Tool | Valid Statistical Methods | Score |
|---|---|---|---|---|---|---|
| 2020 Amatori | * | * | 2 | |||
| 2020 Aslan | * | * | * | 3 | ||
| 2020 Aylie | * | * | * | * | * | 5 |
| 2020 Benham | * | * | 2 | |||
| 2020 Biber | * | * | 2 | |||
| 2020 Bourion-Bédès | * | * | 2 | |||
| 2020 Chang | * | * | * | 3 | ||
| 2020 Chen | * | * | * | 3 | ||
| 2020 Chi | * | * | * | 3 | ||
| 2020 Deng A | * | * | * | 3 | ||
| 2020 Deng B | * | * | * | 3 | ||
| 2020 Dhar | * | * | * | 3 | ||
| 2020 Díaz-Jiménez | * | * | 2 | |||
| 2020 Ding | * | * | * | 3 | ||
| 2020 Dong | * | * | * | 3 | ||
| 2020 Dratva | * | * | * | 3 | ||
| 2020 Du | * | * | 2 | |||
| 2020 Essadek | * | * | * | * | 4 | |
| 2020 Fan A | * | * | 2 | |||
| 2020 Fan B | * | * | 2 | |||
| 2020 Fan C | * | * | * | 3 | ||
| 2020 Fawaz | * | * | * | 3 | ||
| 2020 Feltz-Cornelis | * | * | * | 3 | ||
| 2020 Fu | * | * | 2 | |||
| 2020 Gavurova | * | * | * | 3 | ||
| 2020 Ge | * | * | * | 3 | ||
| 2020 Ghazawy | * | * | 2 | |||
| 2020 Graupensperger | * | * | * | * | 4 | |
| 2020 Gritsenko | * | * | * | 3 | ||
| 2020 Han | * | * | * | 3 | ||
| 2020 Islam | * | * | * | 3 | ||
| 2020 Ji | * | * | * | 3 | ||
| 2020 Jiang | * | * | * | 3 | ||
| 2020 Khoshaim | * | * | * | 3 | ||
| 2020 Lai | * | * | 2 | |||
| 2020 Li | * | * | * | * | 4 | |
| 2020 Lian | * | * | * | * | 4 | |
| 2020 Liang | * | * | 2 | |||
| 2020 Lin A | * | * | 2 | |||
| 2020 Lin B | * | * | * | 3 | ||
| 2020 Liu | * | * | 2 | |||
| 2020 Ma A | * | * | * | 3 | ||
| 2020 Ma B | * | * | * | * | 4 | |
| 2020 Naser | * | * | 2 | |||
| 2020 Nurunnabi | * | * | 2 | |||
| 2020 Ozamiz-Etxebarria | * | * | * | 3 | ||
| 2020 Pavithra | * | 1 | ||||
| 2020 Perz | * | * | 2 | |||
| 2020 Qiu | * | * | * | * | 4 | |
| 2020 Ren | * | * | * | 3 | ||
| 2020 Rogowska A | * | * | * | 3 | ||
| 2020 Rogowska B | * | * | * | 3 | ||
| 2020 Rudenstine | * | * | * | 3 | ||
| 2020 Saddik | * | * | * | * | 4 | |
| 2020 Salman | * | * | 2 | |||
| 2020 Sanudo | * | * | * | 3 | ||
| 2020 Sayeed | * | * | * | 3 | ||
| 2020 Scotta | * | * | 2 | |||
| 2020 Sundarasen | * | 1 | ||||
| 2020 Tang | * | * | * | 3 | ||
| 2020 Tasnim | * | * | 2 | |||
| 2020 Thahir | * | * | 2 | |||
| 2020 Verma | * | * | * | 3 | ||
| 2020 Wang A | * | * | 2 | |||
| 2020 Wang B | * | * | * | 3 | ||
| 2020 Wang C | * | * | * | 3 | ||
| 2020 Wang D | * | * | 2 | |||
| 2020 Wang E | * | * | 2 | |||
| 2020 Wang F | * | * | 2 | |||
| 2020 Wang G | * | * | * | 3 | ||
| 2020 Wathelet | * | * | 2 | |||
| 2020 Wu A | * | * | * | * | 4 | |
| 2020 Wu B | * | * | * | 3 | ||
| 2020 Xia | * | * | 2 | |||
| 2020 Xiang | * | * | 2 | |||
| 2020 Xiao | * | * | 2 | |||
| 2020 Xu | * | * | * | * | 4 | |
| 2020 Yang A | * | * | * | 3 | ||
| 2020 Yang B | * | * | * | 3 | ||
| 2020 Ye | * | * | * | 3 | ||
| 2020 Yi | * | * | 2 | |||
| 2020 Yue | * | * | 2 | |||
| 2020 Zhang A | * | * | * | * | 4 | |
| 2020 Zhang B | * | * | * | 3 | ||
| 2020 Zhang C | * | * | * | * | 4 | |
| 2020 Zhang D | * | * | * | 3 | ||
| 2020 Zhang E | * | * | * | 3 | ||
| 2020 Zhao A | * | * | * | 3 | ||
| 2020 Zhao B | * | * | * | 3 |