Table 2 Quality assessment using New Castel Ottawa Scale.

From: Immune Persistence After Infant Hepatitis-B Vaccination: A Systematic Review and Meta-Analysis

Authors/reference

Selection

Comparability

Outcomes

Total Score

Representative of Exposed Cohort

Selection of Non-Exposed Cohort

Ascertainment of Exposure

Outcomes not Present at Baseline

Assessment of Outcomes

Sufficient Follow up Duration

Adequate Follow up

Bruce et al.

1

0

1

1

2

1

1

1

8

Wu et al.

1

0

1

1

1

1

1

1

7

Poovorawan et al.

1

0

1

1

2

1

1

1

8

Al-Ghamdi et al.

1

0

1

1

1

1

1

1

7

Su et al.

1

0

1

1

1

1

1

1

7

Al Faleh et al.

1

0

1

1

1

1

1

1

7

Spada et al.

1

0

1

1

2

1

1

1

8

Middleman et al.

1

0

1

1

2

1

1

1

8

Avidoca et al.

1

0

1

1

2

1

1

1

8

Gold et al.

1

0

1

1

2

1

1

1

8

Tsega et al.

1

0

1

1

1

1

1

1

7

Amini et al.

1

0

1

1

1

1

1

1

7