Evidence map›Paper›PMID 41676943›Full record

ArticleJournal of the American Heart Association2026

Age- and Sex-Specific Distribution and Reference Values of Coronary Artery Calcium in a Large Asymptomatic Japanese Cohort.

Hidenobu Takagi, Masaharu Hirano, Takashi Asano, Kensuke Nishimiya, Taku Obara, Hideki Ota, Junichi Taguchi, Kei Takase

Abstract read
In one paragraph

Article in Journal of the American Heart Association, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Tailoring Calcium Scores to the Race of a Nation Not a Region.Journal of the American Heart Association · 2026
    Article
  4. Journal of the American Heart Association · 2026
    Article
  5. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Hidenobu TakagiDepartment of Advanced Radiological Imaging Collaborative Research Tohoku University Sendai Japan.ORCID 0000-0002-3071-5803
Masaharu HiranoDepartment of Early Imaging Diagnosis Joint Research Tohoku University Sendai Japan.ORCID 0000-0002-4231-7378
Takashi AsanoYamanakako Clinic Minamitsuru Japan.ORCID 0009-0004-1635-7730
Kensuke NishimiyaDepartment of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan.ORCID 0009-0008-4518-6458
Taku ObaraDivision of Molecular Epidemiology, Graduate School of Medicine Tohoku University Sendai Japan.
Hideki OtaDepartment of Advanced Radiological Imaging Collaborative Research Tohoku University Sendai Japan.
Junichi TaguchiTokyo Midtown Clinic Minato Tokyo Japan.ORCID 0000-0002-1073-2913
Kei TakaseDepartment of Advanced Radiological Imaging Collaborative Research Tohoku University Sendai Japan.ORCID 0000-0003-0931-9942

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe clinical use of coronary artery calcium (CAC) scoring for risk stratification in Japan is limited by the absence of population-specific reference data, as applying Western-derived thresholds is inappropriate because of known ethnic variations. This study aimed to establish the first comprehensive, age- and sex-specific CAC reference values for a healthy Japanese population.

methodsIn this single-center retrospective study, we analyzed data from 4891 asymptomatic Japanese adults (63.2% men; median age, 58 years) without a history of atherosclerotic cardiovascular disease or diabetes. Age- and sex-specific CAC percentile curves were generated using nonparametric regression modeling.

resultsMen exhibited a higher CAC burden than women, with scores increasing with age in both sexes. The relationship between detectable CAC (CAC >0) and age was nonlinear: concave down for men and concave up for women, indicating different progression patterns. Compared with MESA (Multi-Ethnic Study of Atherosclerosis) data, the Japanese cohort had a markedly lower CAC burden than White participants and systematically lower scores than Chinese American women.

conclusionsThis study provides the first large-scale, age- and sex-specific CAC reference values for a healthy Japanese population. The generated percentile curves offer a practical tool for clinicians to immediately assess a patient's CAC burden relative to their peers, underscoring that using foreign-derived thresholds is inappropriate for risk stratification in Japan.

Indexed as

Coronary Artery DiseaseCoronary VesselsVascular CalcificationAdultAgedAged, 80 and overAge DistributionAge FactorsAsymptomatic DiseasesCoronary AngiographyEast Asian PeopleFemaleHumansJapanMaleMiddle Agedatherosclerosiscomputed tomographycoronary artery calcium

Identifiers

PMID41676943
PMCPMC13055732

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.