Sedentary Time among Adults with Chronic Obstructive Respiratory Conditions
Bibliographic record
Abstract
Asthma and chronic obstructive pulmonary disease (COPD) are prevalent conditions that affect 1 in 12 and 1 in 6 Canadians, respectively. Asthma-COPD overlap syndrome (ACOS) has been shown to affect between 15-20% of those with COPD. However, little is known of sedentary time in any of these groups. Given the health consequences of sedentary time, reduction interventions may be an important avenue for improving health among those with chronic obstructive respiratory disease. PURPOSE: To describe self-reported weekly sedentary time, and to determine the association between sedentary time and health outcomes among adults with asthma, COPD or ACOS. METHODS: A sample of adults from the Canadian Community Health Survey (2011-2012) was used for analysis. Average weekly sedentary time in the past 3 months was categorized in 5 hour increments and dichotomized as >29 hours or <29 hours; this cut-point represents 4 hours of sedentary time per day. Self-reported physician diagnosed asthma and COPD were used to categorize respiratory conditions. Respondents with both COPD and asthma were classified as ACOS. Each category was exclusive of the other. Perceived health, mood disorder (depression) and high blood pressure were used as outcomes. RESULTS: Of those with ACOS (n=1,673), 29.4% were sedentary for 45 or more hours per week. Similarly, 27.6% of those with COPD (n=3,290) and 16.7% of those with asthma (n=6,151) were sedentary for 45 or more hours per week. In models adjusted for age, sex, physical activity levels and presence of cardiometabolic disease (diabetes, heart disease or stroke), adults with asthma, COPD and ACOS had a 21% (OR: 1.21, CI: 1.10-1.28), 70% (OR: 1.70, CI: 1.52-1.90) and 75% (OR: 1.75, CI: 1.50-2.04) higher odds of being sedentary for 29 or more hours per week compared to those with no respiratory conditions. Similarly, in fully adjusted models, individuals with asthma and COPD who were sedentary had higher odds of good perceived health, mood disorders and high blood pressure compared to those who were non-sedentary. Among those with ACOS, blood pressure was not associated with sedentary time (OR: 0.91, CI: 0.65-1.26). CONCLUSION: It appears that adults with chronic obstructive respiratory conditions are engaging in high volumes of sedentary time and that sedentary time is associated with worse health outcomes.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".