Are Canadians Providing Advance Directives about Health Care and Research Participation in the Event of Decisional Incapacity?
Bibliographic record
Abstract
OBJECTIVE: Advance planning for health care and research participation has been promoted as a mechanism to retain some control over one's life, and ease substitute decision making, in the event of decisional incapacity. Limited data are available on Canadians' current advance planning activities. We conducted a postal survey to estimate the frequency with which Canadians communicate their preferences about health care and research should they become incapacitated. METHOD: We surveyed 5 populations (older adults, informal caregivers, physicians, researchers in aging, and research ethics board members) from Nova Scotia, Ontario, Alberta, and British Columbia. We asked respondents whether they had expressed their preferences regarding a substitute decision maker, health care, and research participation in the event of incapacity. RESULTS: Two out of 3 respondents (62.0%; 95% CI 59.1% to 64.8%) had been advised to communicate their health care preferences in advance. Oral expression of wishes was reported by 69.1% of respondents (95% CI 66.8% to 71.3%), and written expression by 46.7% (95% CI 44.3% to 49.2%). Among respondents who had expressed wishes in advance (orally or in writing), 91.2% had chosen a substitute decision maker, 80.9% had voiced health care preferences, and 19.5% had voiced preferences regarding research participation. Having been advised to communicate wishes was a strong predictor of the likelihood of having done so. CONCLUSIONS: Advance planning has increased over the last 2 decades in Canada. Nonetheless, further efforts are needed to encourage Canadians to voice their health care and research preferences in the event of incapacity. Physicians are well situated to promote advance planning to Canadians.
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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 | 0.022 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.005 |
| Science and technology studies | 0.009 | 0.003 |
| Scholarly communication | 0.003 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.006 | 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".