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Table 2 The risk-of-bias table in this meta-analysis

From: Comparison of unilateral and bilateral percutaneous vertebroplasty for osteoporotic vertebral compression fractures: a systematic review and meta-analysis

  Chen CM [25] Feng Y [26] Guo ZP [27] Li J [28] Ren HL [29] Wang W [30] Xiao L [31] Yuan WQ [32] Zhai HL [33] Zhang L [34] Zhang LG [35] Zhang X [36] Zhao XQ [37] Zhou R [38]
Random sequence generation Low Low Low Low Low Low Low Low Low Low Low Low Low Low
Allocation concealment Not Not Not Not Not Not Not Not Not Not Not Not Not Not
Blinding of participants and personnel High High High High High High High High High High High High High High
Blinding of outcome assessment Low Low Low Not Low High Low High Low Low Low Low High High
Incomplete outcome data Low Low Low Low Low Low Low Low Low Low Low Low Low Low
Selective reporting Not Low Not High Not High Low Low Low Low Low High Low Low
Other biases Low Low Low Not Not Low Not Not Not Low Low High Not Low
  1. Note: In this table, “Low” stands for low risk, “High” stands for high risk, and “Not” stands for not clear