Is the review by [PROVIDER] et al. in International Journal of Molecular Sciences (2025) completely biased?

Assessment of Potential Bias in the Review

Without access to the actual content of the review by [PROVIDER] et al. (2025) in International Journal of Molecular Sciences, it is impossible to definitively determine if it is "completely biased." However, I can provide you with a framework to critically appraise this review for potential bias using established methodological quality assessment tools.

Framework for Evaluating the Review's Methodological Quality

Apply Standardized Assessment Tools

To determine if this review has significant bias, you should evaluate it using validated instruments:

For Systematic Reviews:

• PRISMA 2020 Checklist 1, 2: Assess completeness of reporting across 27 items. Studies with <70% completion rates typically indicate poor methodological rigor 3
• AMSTAR-2 Tool 3: Evaluates methodological quality across 16 domains. Research shows that 46.3% of systematic reviews underpinning clinical guidelines are rated as "critically low" quality 3

Critical domains to examine (these have the lowest completion rates in published reviews) 3:

• Item 5 (PRISMA): Protocol pre-registration (only 16% completion rate across reviews)
• Item 2 (AMSTAR-2): Pre-established review methods/protocol
• Item 7 (AMSTAR-2): List of excluded studies with justification
• Item 10 (AMSTAR-2): Reporting of funding sources in included studies

Key Red Flags for Bias

Publication Bias Indicators:

• Did the review assess for publication bias? Only 43-55% of systematic reviews evaluate this 4
• When assessed, 80% of reviews show evidence of publication bias by trim-and-fill analysis 4
• Publication bias can cause mean effect estimate differences of 15.5% (range: 0-85.5%) 4

Methodological Quality Issues:

• Risk of bias assessment: Was a validated tool used (Cochrane RoB, ROBINS-I)? 5, 2
• Duplicate screening: Were studies selected and data extracted independently by ≥2 reviewers? 6, 2
• Comprehensive search: Were ≥3 databases searched without language restrictions? 1
• Conflict of interest: Were author conflicts and funding sources disclosed? 3

Journal-Specific Considerations

International Journal of Molecular Sciences context:

• This is a multidisciplinary open-access journal (Impact Factor ~5.6)
• Not a top-tier specialty journal, which may correlate with less rigorous peer review 3
• The journal publishes Special Issues 7, 8, 9, which sometimes have less stringent review processes

Specific Bias Types to Evaluate

Selection Bias:

• Were inclusion/exclusion criteria clearly defined and appropriate? 10, 2
• Was the search strategy comprehensive and reproducible? 1

Reviewer Bias:

• Author-suggested reviewers are 2.4 times more likely to recommend acceptance 11
• Reviewers' own published positions influence their judgments 12

Reporting Bias:

• Were all pre-specified outcomes reported? 2
• Was selective outcome reporting evident? 13

Practical Assessment Steps

1. Check for protocol registration: Search PROSPERO, Cochrane Library for pre-registered protocol
2. Examine methods section: Look for PRISMA/AMSTAR-2 compliance statements
3. Review funding disclosures: Identify potential conflicts of interest
4. Assess statistical methods: Were appropriate meta-analytic techniques used if quantitative synthesis performed?
5. Evaluate certainty of evidence: Was GRADE or similar approach used? 6, 14

Common Pitfalls in Reviews

• No protocol pre-registration: Found in 84% of reviews 3
• Inadequate risk of bias assessment: 50% don't assess this properly 3
• Poor reporting of publication bias: 57% don't discuss it 4
• Lack of independent duplicate review: Increases error rates substantially 2

The term "completely biased" is rarely applicable—bias exists on a spectrum. Use the AMSTAR-2 tool to categorize the review as high, moderate, low, or critically low quality, which provides a more nuanced and defensible assessment than a binary "biased/unbiased" judgment 3, 15.