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Table 2 Risk of bias assessment using the Newcastle–Ottawa Scale for cohort studies included in a meta-analysis

From: Dynamic hip screws versus cannulated screws for femoral neck fractures: a systematic review and meta-analysis

Study Selection Comparability Outcome Total score
Exposed cohort Non-exposed cohort Ascertainment of exposure Outcome of interest The most important factor Additional factor Assessment of outcome Length of follow up Adequacy of follow up
Lee 2007 [9] 9
Widhalm 2019 [10] 9
Chen 2017 [24] 9
Hoshino 2016 [25]   8
Bisaccia 2018 [26]   8
Stiasny 2008 [27]     7
Tolga 2012 [28]     7