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Table 2 Assessment of risk of bias within and across included studies

From: Community-based management versus traditional hospitalization in treatment of drug-resistant tuberculosis: a systematic review and meta-analysis

Study Study year NOS/ STROBE score GRADE Allocation concealment (Selection bias) Blinding Incomplete outcome data Random sequence generation Selective outcome reporting Other sources of bias
Cox H 2014 4/19 VL N Y Y N Y A
Brust JC 2012 4/19 VL N Y N N N A, D
Vaghela JF 2015 4/19 VL N Y Y N Y A, D
Oyieng’o D 2012 4/19 VL N Y Y N N A, D
Joseph P 2011 4/19 VL N Y Y N N A, D
Van Deun A 2010 5/20 L N Y Y N Y A, D
Brust JC 2010 5/20 L N Y Y N Y A, D
Singla R 2009 4/19 VL N Y Y N Y A, D
Tupasi TE 2006 4/19 VL N Y Y N Y A, D
Thomas A 2007 4/19 VL N Y Y N Y A, D
Liu CH 2011 5/20 L N Y Y N Y A, D
Keshavjee S 2008 5/20 L N Y Y N Y A, D
Shin SS 2007 5/19 L N Y N N Y A, D
Cox HS 2007 4/19 VL N Y N N N A,D
Wei XL 2015 4/19 VL N Y Y N N A,D
Hirpa S 2013 5/20 L N Y N N N A, D
  1. A Attrition bias, D Detection bias
  2. VL Very Low: We are very uncertain about the estimate
  3. L Low: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate
  4. H High: Further research is very unlikely to change our confidence in the estimate of effect
  5. NOS score < 4: Low quality
  6. NOS score 4–5: Moderate quality
  7. Y: Low risk of bias
  8. N: High risk of bias