General information, not an individual diagnosis. Ask a healthcare professional if you are unsure about your situation.
A recommendation may display a letter or the term “expert agreement”. Start with its grading key and method: the explanations here concern the HAS “Clinical Practice Guidelines” method, updated in January 2020.
In this grading scheme, A indicates established scientific evidence and B scientific presumption. The letters describe the evidence level supporting the recommendation rather than a rating of the doctor.
Grade C indicates weaker evidence, including case-control studies, retrospective studies or case series. Identify the grade attached to the particular recommendation you are reading rather than borrowing one from another section.
Expert agreement can support a recommendation when scientific evidence is lacking. For example, HAS states that its 2012 patient-information recommendation relies on expert agreement because the evidence was insufficient to establish a grade.
HAS presents these recommendations as an aid to finding appropriate care in specified circumstances. Read them in relation to the question addressed, the document’s date and your own circumstances, discussed with a health professional.
Before relying on an isolated sentence, ask which recommendation is graded, what evidence supports it and whether it applies to your case. Keep the document and its grading key for the discussion, distinguishing its date from the date you consult it.
Sources
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Mon bilan prévention is an appointment to discuss your habits and choose your health priorities. Review the four age groups and practical information.