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Table 2 Details of study quality evaluation via the Newcastle–Ottawa Scale

From: Long-term glycemic variability and risk of stroke in patients with diabetes: a meta-analysis

Study Representativeness of the exposed cohort Selection of the non-exposed cohort Ascertainment of exposure Outcome not present at baseline Control for age Control for other confounding factors Assessment of outcome Enough long follow-up duration Adequacy of follow-up of cohorts Total
Lin (2014) 1 1 1 1 1 0 1 1 1 8
Lee (2017) 1 1 1 1 1 0 1 1 1 8
Lee (2020) 1 1 1 1 1 1 0 1 1 8
Li (2020) 1 1 1 1 1 0 1 1 1 8
Scott (2020) 0 1 1 1 1 1 0 1 1 7
Shen (2021) 1 1 1 1 1 0 0 1 1 7
Sato (2021) 0 1 1 1 1 0 1 1 1 7