Table 1

Participant characteristics and outcome measures

VariableMeasure
Participant characteristics
Melanoma riskMelanoma risk prediction-based self-assessed risk factors38
General mood and well-beingWHO (Five) Well-Being Questionnaire39
Medical minimiser/maximiserSingle-Item Maximiser/Minimiser Elicitation Question (MM1)40
Health literacySingle Item Literacy Screener (SILS)41
Melanoma worryDirect choice between specified options, one choice possible
Self-efficacyGeneralised Self-Efficacy Scale (GSE)42
Primary outcomes
Co-primary outcomes are choices for two management decisions.

  1. Choice of further surgery:

    • No further surgery

    • Further surgery to ensure margins>5 mm from lesion on pathology

  2. Choice of follow-up:

    • Patient-led surveillance: self-monitoring with patient-initiated clinic visits as needed

    • Clinician-led surveillance: 6 monthly routinely scheduled clinic visits

Direct choice between two management approaches for each co-primary outcome
Choice of further surgery and choice of follow-up
Secondary outcomes
Diagnosis anxiety (feelings)Single-question Visual Analogue Scale (0–6)43 44
Experiential perceived risk (vulnerability)Single-question Visual Analogue Scale (0–6)44
Perceived lifetime absolute risk of invasive melanomaSingle-question Visual Analogue Scale (0–100)44
Perceived lifetime comparative risk of invasive melanomaSingle-question Visual Analogue Scale (0–6)44
Perceived lifetime risk of dying from melanomaSingle-question Visual Analogue Scale (0–100)
Management choice anxietySingle-question Visual Analogue Scale (0–6)43
Open-text explanation of management choiceFree text (optional)