TREatment of ATopic eczema (TREAT) Registry Taskforce: protocol for an international Delphi exercise to identify a core set of domains and domain items for national atopic eczema registries

Table 4 List of obvious domains and domain items

Domains	Domain items
Related to baseline ‘demographics and AE’
Demographics	Date of birth and date of enrolment into registry
	Gender
	Ethnicity
	Educational status
	Current occupation or education
AE diagnosis	How diagnosis AE is established
	Use of validated diagnostic criteria
	Date of onset AE
Past AE treatments	Previous phototherapy
Past AE treatments	Previous systemic therapy
Current AE treatments	Phototherapy
Current AE treatments	Systemic immunosuppressive therapy
Family history of AE or allergic diseases
Related to baseline ‘past medical relevant history’
Allergic comorbidities	Asthma
	Allergic rhinoconjunctivitis
	Atopic eye disease
	Eosinophilic oesophagitis
	Food allergies
	Contact allergies
Other comorbidities	Past malignancies
Other comorbidities	Past serious infections
Related to baseline ‘investigations and assessments’
Baseline safety investigations	Medical history (tuberculosis)
	Full blood count
	Liver function
	Kidney profile
Related to follow-up visits
Follow up ‘adverse drug reactions’
Serious adverse events
Adverse events that cause stop or switch of therapy or change in dosage
For (serious) adverse events: probability of relationship with treatment
Follow-up ‘management’
Reason for switching therapy
Reason for discontinuation of therapy

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