Figure 2

Overview of item codes of all three survey versions. Each code represents one item in the surveys. All the Health Belief Model items follow a 7-point Likert scale. UK United Kingdom, SUS Perceived Susceptibility, SEV Perceived Severity, SE Self-Efficacy, CUE Cues to Action, BB Perceived Barriers and Benefits (combined), BEN Perceived Benefits, BAR Perceived Barriers, KN Knowledge.