Table 1.
Characteristics and Jadad scores of the included studies in the meta-analysis.
| Authors | Country | Number of patients | Groups | Target | Jadad score | Blinding | Concealment allocation | Randomised | Follow-up |
|---|---|---|---|---|---|---|---|---|---|
| Bai, 2015 | China | 50 | Dexmedetomidine | 1 | 4 | 1 | 1 | 1 | 1 |
| Saline | |||||||||
| Chen, 2014 | China | 40 | Dexmedetomidine | 1 | 4 | 1 | 1 | 1 | 1 |
| Saline | |||||||||
| Deng, 2011 | China | 90 | Dexmedetomidine | 1, 2 | 4 | 1 | 1 | 1 | 1 |
| Saline | |||||||||
| Tramadol | |||||||||
| Ge, 2012 | China | 60 | Dexmedetomidine | 1, 2, 3, 4 | 4 | 1 | 1 | 1 | 1 |
| Saline | |||||||||
| Hanoura, 2013 | Egypt | 50 | Dexmedetomidine | 1, 2, 3, 4, 5 | 6 | 2 | 1 | 2 | 1 |
| Saline | |||||||||
| Li, 2013 | China | 120 | Dexmedetomidine | 1, 2 | 4 | 1 | 1 | 1 | 1 |
| Saline | |||||||||
| Li, 2015 | China | 90 | Dexmedetomidine | 2, 3, 4, 5 | 6 | 2 | 1 | 2 | 1 |
| Fentanyl | |||||||||
| Fentanyl plus clonidine | |||||||||
| Saline | |||||||||
| Liu, 2015 | China | 120 | Dexmedetomidine | 2, 3 | 6 | 2 | 1 | 2 | 1 |
| Saline | |||||||||
| Lu, 2015 | China | 60 | Dexmedetomidine | 1, 2 | 4 | 1 | 1 | 1 | 1 |
| Saline | |||||||||
| Sun, 2015 | China | 90 | Dexmedetomidine | 1, 2, 3, 4, 5 | 6 | 2 | 1 | 2 | 1 |
| Saline | |||||||||
| Fentanyl | |||||||||
| Yousef, 2015 | Egypt | 80 | Dexmedetomidine | 2, 3, 4, 5 | 5 | 2 | 1 | 1 | 1 |
| Saline | |||||||||
| Zhang, 2014 | China | 136 | Dexmedetomidine | 1, 3, 4 | 4 | 1 | 1 | 1 | 1 |
| Saline |
1: shivering, 2: nausea and vomiting, 3: hypotension, 4: bradycardia, 5: pruritus.