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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