Skip to main content

Table 1 Categories for adverse events

From: Clarithromycin and endoscopic sinus surgery for adults with chronic rhinosinusitis with and without nasal polyps: study protocol for the MACRO randomised controlled trial

Category

Definition

Mild

The adverse event does not interfere with the participant’s daily routine and does not require intervention; it causes slight discomfort

Moderate

The adverse event interferes with some aspects of the participant’s routine or requires intervention, but is not damaging to health; it causes moderate discomfort

Severe

The adverse event results in an alteration, discomfort or disability that is clearly damaging to health