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Table 2 Risk-of-bias assessment of the included studies

From: Effectiveness of beta-tricalcium phosphate in comparison with other materials in treating periodontal infra-bony defects around natural teeth: a systematic review and meta-analysis

Authors/year Randomization Blinding Incomplete outcome data Selective outcome reporting Similarity of groups at baseline Control of confounding and interaction Conflict of interest
Strub JR et al., 1979 No No No No Yes, split-mouth design No None
Snyder AJ et al., 1984 No No No No N/A No None
Zefiropoulos GG et al., 2007 No Yes, single blinding Yes, CAL gain No No No None
Rajesh JB et al., 2009 Yes, random-number table method No No No No No Yes, study was supported by the graft material company*
Sukumar S et al., 2010 No No No No N/A No None
  1. CAL clinical attachment level
  2. *Sree Chitra Tirunal Institute for Medical Sciences and Technology