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Table 2 Quality assessment of cohort studies

From: Early administration of proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors in patients with acute coronary syndrome: a systematic review and meta-analysis

First Author and Year

Selection

Comparability

Exposure/Outcome

Total Score

Zhang 2022 [26]

****

**

***

*********

Ji 2023 [9]

****

**

***

*********

Zhao 2023 [23]

****

**

***

*********