Four Decades of Advancing Research on Adolescent Health and Informing Health Policies: The Health Behaviour in School-Aged Children Study
Bibliographic record
Abstract
The Health Behaviour in School-aged Children (HBSC) study is a large cross-national research study, conducted in partnership with the World Health Organization (WHO). The study has surveyed young people aged 11, 13 and 15 years every 4 years since the mid-1980s and has grown to include 50 countries across Europe, North America, and Western-Central Asia. Over the past 40 years more than 1.6 million students have participated. HBSC aims to advance understanding of adolescent health behaviours, health and wellbeing within social contexts, inform national and international health promotion policies and practice, and foster collaboration among researchers, policymakers, and practitioners. In this paper we share the history and development of the HBSC study covering: i) theory-driven and novel research impact, ii) unique long-term trends in adolescent health behaviours and perceived health and wellbeing, iii) methodological rigor to allow cross-national comparison, and iv) embedding youth involvement and maximizing policy impact.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.039 | 0.048 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.004 | 0.011 |
| Science and technology studies | 0.003 | 0.004 |
| Scholarly communication | 0.007 | 0.003 |
| Open science | 0.001 | 0.008 |
| Research integrity | 0.002 | 0.005 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".