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Table 5 Methodological quality of the systematic review and meta-analyses were assessed using the AMSTAR2 scale

From: The role of diet and nutrition related indicators in biliary diseases: an umbrella review of systematic review and meta-analysis

Study

Q1

Q2*

Q3

Q4*

Q5

Q6

Q7*

Q8

Q9*

Q10

Q11*

Q12

Q13*

Q14

Q15*

Q16

AMSTAR-2 overall quality

Bagnardi [21]

Y

N

N

Y

N

Y

N

PY

PY

N

Y

Y

Y

Y

N

Y

Critically low

Clements [1]

Y

N

N

Y

N

N

N

PY

PY

N

Y

N

N

N

Y

Y

Critically low

Godos [13]

Y

N

N

PY

Y

Y

Y

Y

PY

N

Y

N

Y

Y

Y

Y

Low

Chen [29]

Y

N

N

Y

Y

Y

N

Y

PY

N

Y

Y

Y

N

Y

Y

Critically low

Xiong [36]

Y

N

N

PY

N

Y

N

Y

Y

N

N

N

N

N

Y

Y

Critically low

ZHU [22]

Y

N

N

Y

N

Y

N

PY

PY

N

Y

N

N

Y

Y

Y

Critically low

Huai [37]

Y

N

N

Y

Y

Y

N

PY

PY

N

Y

N

Y

Y

Y

Y

Critically low

Kamsa-ard [30]

Y

N

N

N

Y

Y

N

N

PY

N

N

N

N

N

N

Y

Critically low

Steele [23]

Y

N

N

Y

N

Y

N

PY

N

N

N

N

Y

N

N

Y

Critically low

Daniel [26]

Y

Y

N

Y

Y

Y

N

Y

Y

N

N

N

N

N

N

Y

Critically low

Byung [38]

Y

N

Y

Y

Y

Y

N

PY

PY

N

N

N

Y

N

Y

Y

Critically low

Zhang [39]

Y

N

N

Y

Y

Y

N

Y

Y

N

Y

Y

Y

Y

Y

Y

Critically low

Zhang [40]

Y

N

N

Y

Y

Y

N

PY

Y

N

Y

Y

Y

Y

Y

Y

Critically low

Ying Li [31]

Y

N

N

Y

N

Y

N

PY

PY

N

Y

N

N

Y

N

Y

Critically low

Emma E. McGee [27]

Y

N

N

N

N

N

N

PY

PY

N

Y

N

N

N

N

Y

Critically low

Xiao-Hua Ye [35]

Y

N

N

Y

Y

Y

N

PY

PY

N

Y

Y

N

Y

Y

Y

Critically low

Jiantao Wang [28]

Y

N

N

Y

N

Y

N

PY

PY

N

Y

N

N

Y

Y

Y

Critically low

Gu [41]

Y

N

N

Y

Y

Y

N

Y

Y

N

Y

Y

Y

Y

Y

Y

Critically low

Li [42]

Y

N

N

Y

Y

N

N

Y

Y

N

N

Y

N

N

Y

Y

Critically low

Aune [33]

Y

N

N

Y

N

N

Y

Y

Y

N

Y

Y

Y

Y

Y

Y

Low

Barclay [25]

Y

N

N

Y

Y

Y

N

Y

N

N

N

Y

N

N

Y

Y

Critically low

Dagfinn Aune [34]

Y

N

Y

Y

N

N

Y

Y

Y

N

Y

Y

Y

Y

Y

Y

Low

Petrick [24]

Y

N

N

PY

Y

Y

N

Y

N

N

N

Y

Y

N

Y

Y

Critically low

  1. AMSTAR-2 items: Q1: Did the research questions and inclusion criteria for the review include the components of PICO? Q2: Did the report of the review contain an explicit statement that the review methods were established prior to the conduct of the review, and did the report justify any signifificant deviations from the protocol? Q3: Did the review authors explain their selection of the study designs for inclusion in the review? Q4: Did the review authors use a comprehensive Literature search strategy? Q5: Did the review authors perform study selection in duplicate? Q6: Did the review authors perform data extraction in duplicate? Q7: Did the review authors provide a list of excluded studies and justify the exclusions? Q8: Did the review authors describe the included studies in adequate detail? Q9: Did the review authors use a satisfactory technique for assessing the risk of bias (RoB) in individual studies that were included in the review? Q10: Did the review authors report on the sources of funding for the studies included in the review? Q11: If meta-analysis was performed, did the review authors use appropriate methods for statistical combination of results? Q12: If meta-analysis was performed, did the review authors assess the potential impact of RoB in individual studies on the results of the meta-analysis or other evidence synthesis? Q13: Did the review authors account for RoB in primary studies when interpreting/discussing the results of the review? Q14: Did the review authors provide a satisfactory explanation for, and discussion of, any heterogeneity observed in the results of the review? Q15: If they performed quantitative synthesis, did the review authors carry out an adequate investigation of publication bias (small study bias) and discuss its likely impact on the results of the review? Q16: Did the review authors report any potential sources of conflflict of interest, including any funding they received for conducting the review?
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Nutrition & Metabolism

ISSN: 1743-7075

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