Effectiveness of an ergonomic keyboard for typists with work related upper extremity disorders: A follow-up study
Bibliographic record
Abstract
OBJECTIVE: To investigate whether long-term use of an ergonomic keyboard was effective in reducing symptom severity and improving functional status for individuals who experience symptoms of work related upper extremity disorders (WRUED). PARTICIPANTS: Twenty-nine symptomatic workers employed by a single company. METHODS: Participants were assessed after using an ergonomic keyboard for an average of 34 months. Symptom severity, clinical signs, functional status, and typing speed were measured and compared with baseline and six-month study data. RESULTS: Repeated-measure analysis identified that participants maintained the improvement realized at the six-month study mark for symptom severity and functional status, and maintained their typing speed and accuracy. CONCLUSIONS: The results of the study suggest that continuous ergonomic keyboard use was effective in maintaining improvements obtained after six months of use. The potential for ergonomic keyboard use in preventing injury in keyboard operators warrants further investigation.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 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 | 0.000 | 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".