Association between osteoarthritis-related serum biochemical markers over 10–13 years and knee symptoms in middle-aged adults
Bibliographic record
Abstract
OBJECTIVES: To examine associations between osteoarthritis (OA)-related biochemical markers and knee symptoms in middle-aged adults over 10-13 year follow-up. METHODS: Blood samples were collected during the Childhood Determinants of Adult Health (CDAH)-1 study (2004-06) and follow-up at CDAH-3. Serum samples from baseline (n=156) and follow-up (n=167) were analyzed for cartilage oligomeric matrix protein (COMP), matrix metalloproteinase (MMP)-3, and hyaluronan (HA) using enzyme-linked immunosorbent assays. Knee symptoms were assessed using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scale at follow-up. Zero-inflated Poisson regression models adjusted for age, sex, and body mass index were used for analysis. RESULTS: Significant associations were observed between COMP, MMP-3, and HA with knee pain and WOMAC-total score at follow-up. Baseline MMP-3 [ratio of means (RoM): 1.013; 95% CI: 1.006, 1.020], cumulative COMP (baseline + follow-up) [RoM: 1.022; 95% CI: 1.011, 1.033], and increased HA levels over time [RoM: 1.014; 95% CI: 1.007, 1.020] were positively associated with knee pain after 10-13 years. CONCLUSION: Cumulative COMP, baseline MMP-3, and changes in HA were associated with knee pain over a a 10-13 year follow-up. These markers may help predict future knee symptoms in middle-aged adults.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".