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Record W1974745097 · doi:10.1359/jbmr.070324

Why Are Hip Fracture Rates Falling?

2007· article· en· W1974745097 on OpenAlexaboutno aff
Pekka Kannus

Bibliographic record

VenueJournal of Bone and Mineral Research · 2007
Typearticle
Languageen
FieldMedicine
TopicBone health and osteoporosis research
Canadian institutionsnot available
Fundersnot available
KeywordsOsteoporosisHip fractureMedicineFalling (accident)Incidence (geometry)DemographyGerontologyPopulationCohortPopulation ageingInternal medicineEnvironmental health

Abstract

fetched live from OpenAlex

In his letter, Dr Melton speculates about the possible reasons for our observation on the declining rates of hip fracture in Finland since the late 1990s.(1) As we clearly pointed out in our Discussion, the exact reasons for this secular change are unknown, although many potential explanations can be given. A cohort effect toward healthier elderly population and improved functional ability among elderly Finns may indeed refer to the “compression of morbidity” in their lifespan. These phenomena are not simple and straightforward, however. In our country, evidence is strong for improved functionality among elderly women and men to the age group of 80–84,(2,3) whereas among the oldest old (persons ≥85 yr of age), the functional ability has not improved during the recent two decades.(4) The Canadian investigators, without any direct evidence for cause‐effect relationship, attributed a decline in hip fracture incidence in Ontario in 1992–2000 to increased use of bone densitometry and antiresorptive therapy.(5) In their related Editorial, Melton et al.(6) were, however, rather critical about such a straightforward interpretation. Among other criticism, Melton et al. pointed out that similarly declining hip fracture incidence rates have been seen in Rochester women since 1950 and in Rochester men since 1980, a similar climatologic region, the decline thus occurring decades before osteoporosis screenings and therapies became available. In Finland, use of bone‐specific drugs was so uncommon in the 1990s that its role must have been minor in explaining the decreased hip fracture incidence since 1997. This especially concerns our elderly men.

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)0.010
metaresearch head score (Gemma)0.066
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.021
Threshold uncertainty score0.052

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0100.066
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0020.001
Bibliometrics0.0030.003
Science and technology studies0.0020.003
Scholarly communication0.0040.005
Open science0.0030.001
Research integrity0.0210.023
Insufficient payload (model declined to judge)0.0030.003

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 head0.079
GPT teacher head0.436
Teacher spread0.358 · 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 designObservational
Domainnot available
GenreEmpirical

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

Citations1
Published2007
Admission routes1
Has abstractyes

Explore more

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