Critical appraisal is often discussed in the context of nursing and healthcare research. It "enable you to systematically assess the trustworthiness, relevance and results of published papers" (CASP, 2021).
Once you find resources you need, it is important to read and evaluate them for the validity, relevancy, and reliability. You can perform this by asking yourself questions like do they have clear research questions and are they collecting the data in the right way.
Consider some fundamental questions when you begin your appraisal
Abstract and Introduction
Background and literature review
There are many checklists and tools available to help you with critical appraisal. Some are listed below:
Critical Appraisal Skills Programme (CASP) : CASP offers various resources on critical appraisal skills including training, workshops and tools.
Critical Appraisal tools - Centre for Evidence-Based Medicine : The Centre for Evidence-Based Medicine from the University of Oxford offers resources and tools for critical appraisal.
EBM Toolkit: Tools from University of Alberta for identifying and assessing evidence for health care decision making.
Joanna Briggs Institute critical appraisal checklists: Critical Appraisal tools from JBI for assessing the relevance and trustworthiness of literature.
Mixed Methods Appraisal Tool (MMAT): Checklist for appraising and describing studies included in systematic mixed studies reviews. It allows appraisal of the methodological quality of qualitative, quantitative, and mixed method studies.
PRISMA: The PRISMA checklist is a 27 part list to appraise the quality of a paper's structure, methodology, and reporting.