Evaluating prevalence and trajectory of functional disability in older surgical patients: An observational cohort study
Bibliographic record
Abstract
STUDY OBJECTIVES: To (1) estimate the prevalence and trajectory of functional disability exceeding patient-acceptable and clinically significant levels in older surgical patients preoperatively and at 30, 90, and 180 days postoperatively, (2) identify risk factors associated with postoperative functional disability, and (3) compare adverse clinical outcomes between participants with and without functional disability. DESIGN: Multicenter prospective study. SETTING: Remote preoperative and postoperative assessments. PATIENTS: 307 older patients aged ≥65 years undergoing non-cardiac surgery. MEASUREMENTS: Functional disability was assessed using the 12-item World Health Organization Disability Assessment Schedule 2.0 on an online survey, with a score ≥ 16 % exceeding a patient-acceptable symptom state and ≥ 35 % indicating significant, or at least moderate, severity. MAIN RESULTS: We found that 133 (43 %) patients exhibited preoperative functional disability exceeding a patient-acceptable level, with 42 (14 %) experiencing clinically significant, or at least moderate, functional disability. The Functional Disability group showed greater improvement in function than the No-disability group. Specifically, over 60 % of participants in the Functional Disability group showed significant improvement at 90 and 180 days postoperatively, with 40 % being disability-free. However, 12 % of the Functional Disability group and 9 % of the No-disability group experienced a clinically important worsening in functional disability at 180 days postoperatively. Preoperative functional disability and depression were associated with nearly 6- and 4-fold higher odds of functional disability at 180 days, respectively. CONCLUSIONS: Patients with preoperative functional disability experienced greater postoperative improvement in functional disability than the No-disability group. Preoperative evaluation of functional disability informs perioperative care and recovery for patients and clinicians.
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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 | 0.002 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".