Pulmonary Rehabilitation with and without a Cognitive Behavioral Intervention for Breathlessness in People Living with Chronic Obstructive Pulmonary Disease: Randomized Controlled Trial
Bibliographic record
Abstract
(1) Background: Most controlled trials of cognitive behavior therapy (CBT) in people living with chronic obstructive pulmonary disease (COPD) have targeted anxiety and depression. (2) Methods: This pragmatic randomized controlled trial explored whether a comprehensive pulmonary rehabilitation program (CPRP) with CBT for breathlessness or social group control (CPRP + SC) significantly improved health outcomes. (3) Results: People with moderate-to-severe COPD were block randomized (CPRP + CBT n = 52 or CPRP + SC n = 49). Primary outcomes (Hospital Anxiety and Depression scale (HADs), six-minute walk distance (6MWD)) and secondary outcomes (breathlessness, quality of life and habitual physical activity) were assessed before and 1, 6 and 12 months post intervention. Between-group differences were calculated with mixed models for each time point to baseline (intention to treat (ITT)). Participants (n = 101, mean ± SD age 70 ± 8.5 years, 54 (53%) males, FEV1% pred 47.7 ± 16.3) were similar between groups. Post intervention, primary outcomes did not differ significantly between groups at 1 (6MWD mean difference −7.5 [95% CI −34.3 to 19.4], HADs-A −0.3 [−1.4 to 0.9], HADs-D 0.2 [−0.8 to 1.3]), 6 (6MWD −11.5 [−38.1 to 15.1], HADs-A 1.1 [0.0 to 2.2], HADs-D 0.2 [−0.9 to 1.3]), or 12 months (6MWD −3.8 [−27.2 to 19.6], HADS-A −0.4 [−1.5 to 0.6], HADs-D −0.7 [−1.7 to 0.4]). (4) Conclusions: In this cohort, combining CBT with a CPRP did not provide additional health benefits beyond those achieved by a standard CPRP.
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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 | 0.004 | 0.007 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.006 | 0.005 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.004 | 0.003 |
| Insufficient payload (model declined to judge) | 0.014 | 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; 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".