Validation for the reduced Western Ontario McMaster Universities Osteoarthritis Index function scale
Bibliographic record
Abstract
Aim The reduced WOMAC function scale has been developed and initial validity performed. However, further validation and recommendations for the treatment of missing values are required Method A cross-over study of 100 pre-operative TKA patients was performed for further validation. Repeatability testing was performed for full and reduced WOMAC scores. Missing value protocols were developed, examining number of valid responses, means and SDs. Results Cross-over: There was no significant difference between full and reduced scales. Test-retest: There was no significant difference between scores for either the full or reduced scales. Missing values: The frequencies of valid responses, means and SDs when using different missing value protocols (none missing, 0-1, upto 2 and upto 3 missing), indicated that the 1 or 2 missing protocol was optimal. Conclusions The reduced WOMAC function scale has been further validated. It is proposed that where 1 or 2 items are missing, the average value for the sub-scale is substituted in lieu of these missing values.
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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 | 0.032 | 0.061 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.002 |
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".