Specific objectives and methodology for the adolescent health literacy project
| Objectives | Method | Sample | Analysis |
| 1. Identify preliminary understanding of health concepts with adolescents | Group interviews. | (Composition): n=31 (16 girls, 15 boys). | (Proposed): thematic analysis. |
| 2. Explore domains of health literacy from an adolescent perspective | Co-design workshops, vignettes and concept mapping. | (Anticipated composition): n=30 approx. | (Proposed): thematic analysis. |
| 3. Exploring if the items are understood as intended by the adolescents | Group interviews. | (Anticipated composition): n=15 approx. | (Proposed): refining item wording and composition from adolescents’ feedback. |
| 4. Further refining of the items within the questionnaire | Cognitive interviews. | (Anticipated composition): n=4 adolescents and n=4 education workers approx. | (Proposed): Further refining of items within questionnaire via observation and interview questioning. |
| 5. Pilot testing of the questionnaire | Questionnaire completed by representative sample of Irish adolescents within school settings. | (Anticipated composition): n=200 approx. | Test–retest reliability and confirmatory factor analysis. |
| 6. Validity testing of questionnaire with nationally representative sample of Irish adolescents | Questionnaire completed by nationally representative sample of Irish adolescents. | (Anticipated composition based on sample size calculation): n=6052 approx. | Test–retest reliability and confirmatory factor analysis. |