Judge blinding for a patient-reported outcome by identifying who was blinded and whether that outcome could be unmasked, then record the domain judgement with reasons. Cochrane's RoB 2 framework assesses a specific randomized-trial result across bias domains using signalling questions and written justifications, producing low risk, some concerns, or high risk judgements. Apply that structure to the outcome you are verifying.
Scope the judgement to one outcome
RoB 2 assesses a specific result, so anchor the blinding judgement to the patient-reported outcome you are checking. A trial can have different blinding risk across outcomes, so a single overall label can hide the outcome you care about.
Work through the checks
- Identify who was blinded for this outcome: participants, care providers, and outcome assessors. Record each role separately, because a patient-reported outcome depends most on whether participants knew their assignment.
- Decide whether the outcome is susceptible to unmasking. Ask whether knowing the assignment could change how a participant reports symptoms, and whether the winter-health context (for example, seasonal symptom reporting) makes that plausible.
- Record the domain judgement as low risk, some concerns, or high risk, and write the reasons that connect your blinding findings to this outcome type.
What the deliverable looks like
Write a short justification that names the outcome, lists who was blinded, states whether unmasking was plausible, and gives the judgement with its reasons. Keep the reasoning tied to the patient-reported outcome so a reviewer can follow the link from evidence to conclusion.
CONSORT 2025 supports complete reporting of randomized trials but is not a study design or quality appraisal tool, so use it to check what the trial reported and use RoB 2 to form the judgement.