| Categories | Sub-categories |
| Category I, Students experiences during the pandemic | 1.1 Positive experiences 1.2 Negative experiences |
| Category II, Students’ knowledge and abilities for self-help during the pandemic |
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| Category III, Abilities to promote conflicts solving |
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| Category IV, Impact and usefulness of PBL in students’ experiences for health education | 4.1 Positive impact of PBL 4.2 Negative impact of PBL |