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Record W2142696699 · doi:10.1161/strokeaha.113.002251

Four Decades of Stroke Prevention Trials

2014· article· en· W2142696699 on OpenAlexaff
Henry J.M. Barnett

Bibliographic record

VenueStroke · 2014
Typearticle
Languageen
FieldMedicine
TopicCerebrovascular and Carotid Artery Diseases
Canadian institutionsWestern University
Fundersnot available
KeywordsMedicineStroke (engine)Clinical trialNeurologyAcute strokePneumoniaEpidemiologyIntensive care medicinePsychiatryEmergency departmentInternal medicine

Abstract

fetched live from OpenAlex

M edical students in the 1940s observed that stroke vic- tims were regarded as in a hopeless situation.Severely disabled patients with stroke and those in coma from intracerebral clots were confined to Observation Units.What was learned in my early days allowed us to replace this Medical Bedlam with Stroke Prevention and Treatment Units.Stroke neurologists, specialized nurses, and imaging technicians became available to give expert care in these new units.The hopeless era of stroke disappeared.With a growing number of colleagues I was privileged to contribute to this change or watch from the sidelines, as others were involved.The biggest differences have resulted from epidemiological observations, dramatic scientific breakthroughs, including microbiology, treating infectious disease, pharmacology, and technology, coupled with the advent of rigid clinical trials.The most important may be listed as follows:• Fleming's discovery of penicillin eliminated brain abscess and much pneumonia and strokes because of pneumococcal and syphilitic meningo-vascular changes.Streptomycin could cure tuberculous meningitis.Endocarditis with embolic brain infarction was becoming uncommon.I can recall in the mid-1940s, discharging home to their young families, 2 well individuals, 1 recovered from coma because of tuberculous meningitis, the other cured of strep viridans endocarditis.These were pioneering events that before those days were fatal but today we take the cure for granted.• Confirmation of the risk factors emerged from a combination of research strategies.One of the keys to affirmation of many was the collecting of life-time records of populations as in the Framingham Study 1 and the Oxfordshire Stroke Project. 2 The Four Horsemen of the Stroke Apocalypse are hypertension, tobacco, diabetes mellitus, and cholesterol excess.Control of all of these has been shown clearly to reduce stroke occurrence.Some important factors cannot be changed (eg, old age, male sex, and heredity) but with these in the patient's background assiduous management of the risk profile is needed.Clinical trials have been of particular consequence in proving the necessity to regulate blood pressure in all age groups and to maintain normal levels of the low-density lipoprotein fraction of cholesterol.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.089
metaresearch head score (Gemma)0.155
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Systematic review · Consensus signal: none
GenreCandidate signal: Review · Consensus signal: Review
Teacher disagreement score0.089
Threshold uncertainty score0.470

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0890.155
Meta-epidemiology (narrow)0.0020.002
Meta-epidemiology (broad)0.0080.006
Bibliometrics0.0040.005
Science and technology studies0.0010.002
Scholarly communication0.0080.006
Open science0.0020.005
Research integrity0.0060.008
Insufficient payload (model declined to judge)0.0090.003

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.

Opus teacher head0.038
GPT teacher head0.315
Teacher spread0.277 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSystematic review
Domainnot available
GenreReview

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".

Quick stats

Citations0
Published2014
Admission routes1
Has abstractno

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