School‐level factors associated with obesity: A systematic review of longitudinal studies
Bibliographic record
Abstract
Although school has been an important intervention venue for obesity prevention, the role of school-level factors in obesity development or prevention has not been well-documented. This study aimed to systematically examine the current evidence on school-level factors associated with obesity outcomes in longitudinal studies. The literature search was performed in PubMed, EMBASE, CINHAL, and PsycINFO. Peer-reviewed articles using longitudinal study designs and published in English from 1991 to 2018 were eligible. Twelve articles met eligibility criteria for final systematic review. Nine studies reported significant long-term associations between school-level factors and obesity outcomes. Higher parental education, longer minutes of recess, meeting recommended recess and physical education time, higher socio-economic status, suburban compared with rural area, higher parental involvement in school, and healthful school food environment were significantly associated with lower rates of obesity or obesity trajectory. However, due to the small number of studies and heterogeneity of measures and variables used in their analytic models, the overall level of evidence from this review suggests the importance of further, systematic study. Empirically rigorous research is needed to identify additional aspects of the school context and environment that may contribute to the risk of obesity throughout the life course.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.009 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.029 | 0.004 |
| Bibliometrics | 0.000 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.000 | 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; both teacher heads agree on what is shown here.
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".