Table 2.
Quality assessment of identified studies.
| Study | Outcome | Component rating | Global rating | |||||
|---|---|---|---|---|---|---|---|---|
| Selection bias | Study design | Confounders | Blinding | Data collection methods | Withdrawals and dropouts | |||
| Che et al. (25) | Cost | Moderate | Weak | Weak | Moderate | Weak | NA | Weak |
| Hu et al. (26) | Cost | Moderate | Moderate | Weak | Moderate | Strong | NA | Moderate |
| Lang et al. (27) | Cost | Moderate | Moderate | Strong | Moderate | Strong | NA | Strong |
| Lei et al. (28) | Cost | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Nguang et al. (29) | Cost | Moderate | Moderate | Strong | Moderate | Strong | Weak | Moderate |
| Ran et al. (30) | Cost | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Fan et al. (31) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Moderate |
| Fan et al. (32) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Fielding et al. (33) | QoL | Moderate | Moderate | Strong | Moderate | Strong | Strong | Strong |
| Hsu et al. (34) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Huang et al. (35) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Li et al. (36) | QoL | Moderate | Moderate | Weak | Moderate | Strong | Strong | Moderate |
| Li et al. (37) | QoL | Moderate | Moderate | Weak | Moderate | Strong | Strong | Moderate |
| Li et al. (38) | QoL | Moderate | Moderate | Weak | Moderate | Strong | Strong | Moderate |
| Li et al. (39) | QoL | Moderate | Moderate | Weak | Moderate | Strong | Strong | Moderate |
| Jie et al. (40) | QoL | Moderate | Moderate | Strong | Moderate | Strong | Strong | Strong |
| Jie et al. (41) | QoL | Moderate | Moderate | Strong | Moderate | Strong | Strong | Strong |
| Qiao et al. (42) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Qiu et al. (43) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Shun et al. (44) | QoL | Moderate | Moderate | Strong | Moderate | Strong | Strong | Strong |
| Wei et al. (45) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
| Wong et al. (46) | QoL | Moderate | Moderate | Strong | Moderate | Strong | Weak | Moderate |
| Wong et al. (47) | QoL | Moderate | Moderate | Strong | Moderate | Strong | Weak | Moderate |
| Yang et al. (48) | QoL | Moderate | Moderate | Weak | Moderate | Strong | Weak | Weak |
| Yeo et al. (49) | QoL | Strong | Moderate | Strong | Moderate | Strong | Strong | Strong |
| Zhang et al. (50) | QoL | Moderate | Moderate | Strong | Moderate | Strong | Strong | Strong |
| Zheng et al. (51) | QoL | Moderate | Weak | Weak | Moderate | Strong | NA | Weak |
QoL, quality of life; NA, not applicable.