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Table 2 Methodological quality assessment

From: Separate double-layer repair versus en masse repair for delaminated rotator cuff tears: a systematic review and meta-analysis

Study

Selection

Outcome

Exposed cohort

Non-exposed cohort

Ascertainment of exposure

Outcome of interest

Comparability

Assessment of outcome

Length of follow-up

Adequacy of follow-up

Total score

Cha et al. [12]

*

*

*

*

*

*

*

*

8

Nakamizo et al. [15]

*

*

*

*

*

*

*

*

8

Jia et al. [16]

*

*

*

*

*

*

*

*

8

  1. *Risk of bias was assessed using the Newcastle–Ottawa Scale. A higher overall score indicates a lower risk of bias; a score of 5 or less (out of 9) corresponds to a high risk of bias