Equity of access to health care. Evidence from NHS Direct in the UK
Bibliographic record
Abstract
In the UK National Health Service (NHS), NHS Direct, the national 24-h telephone helpline, has been available in England and Wales since 2000 and has been termed a 'single gateway' to health care. We conducted a population survey of 15,004 people in areas covered by the service, which included questions about NHS Direct use and socio-economic characteristics. After removing undeliverable questionnaires, the survey response rate was 60% (8750/14,516). In all, a quarter of respondents had ever used NHS Direct (26%, 95% confidence interval 25-27), ranging from 32% of the population in Preston/Chorley (888/2,794) and Newcastle and North Tyneside (515/1,621) to 17% (2,215/8,536) in Sheffield, which had introduced the service 20 months later. Logistic regression showed that those from poorer socioeconomic groups or with communication difficulties were less likely to have used the service than others. Overcoming this apparent bias against those likely to have the greatest need is an unsolved problem not confined to telemedicine.
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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 | 0.013 | 0.069 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.005 | 0.006 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.003 | 0.004 |
| Open science | 0.001 | 0.006 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.019 | 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".