Evidence map›Paper›PMID 30956258›Full record

ArticleJournal of epidemiology2020

Associations of Frequency of Laughter With Risk of All-Cause Mortality and Cardiovascular Disease Incidence in a General Population: Findings From the Yamagata Study.

Kaori Sakurada, Tsuneo Konta, Masafumi Watanabe, Kenichi Ishizawa, Yoshiyuki Ueno, Hidetoshi Yamashita, Takamasa Kayama

Open access · goldAbstract read
In one paragraph

Article in Journal of epidemiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
6.5field-weighted citation impact, top 4% of its field
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

23 citing papers in PubMed, 50 citations in OpenAlex.

  1. Trial
  2. Trial
  3. The status of health-related quality of life among older adults with overactive bladder: a cross-sectional analysis of the Yamagata Cohort Study in Japan.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2026
    Article
  4. Article
  5. Beyond Humor: Laughter as a Cardiovascular Stimulus.Arquivos brasileiros de cardiologia · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. The Association between Laughter and Functional Dyspepsia in a Young Japanese Population.International journal of environmental research and public health · 2022
    Article
  14. Observational
  15. Article
  16. Article
  17. Association between frequency of laughter and oral health among community-dwelling older adults: a population-based cross-sectional study in Japan.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2021
    Article
  18. Article
  19. The Smiles of Older People through Recreational Activities: Relationship between Smiles and Joy.International journal of environmental research and public health · 2021
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Kaori SakuradaDepartment of Fundamental Nursing, Yamagata University Faculty of Medicine School of Nursing.ORCID http://orcid.org/0000-0002-6269-0671
Tsuneo KontaDepartment of Public Health and Hygiene, Yamagata University Graduate School of Medical Science.ORCID http://orcid.org/0000-0001-7681-6469
Masafumi WatanabeGlobal Center of Excellence Program Study Group, Yamagata University School of Medicine.
Kenichi IshizawaGlobal Center of Excellence Program Study Group, Yamagata University School of Medicine.
Yoshiyuki UenoGlobal Center of Excellence Program Study Group, Yamagata University School of Medicine.
Hidetoshi YamashitaGlobal Center of Excellence Program Study Group, Yamagata University School of Medicine.
Takamasa KayamaGlobal Center of Excellence Program Study Group, Yamagata University School of Medicine.
Yamagata University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPositive and negative psychological factors are associated with mortality and cardiovascular disease. This study prospectively investigated associations of daily frequency of laughter with mortality and cardiovascular disease in a community-based population.

methodsThis study included 17,152 subjects ≥40 years old who participated in an annual health check in Yamagata Prefecture. Self-reported daily frequency of laughter was grouped into three categories (≥1/week; ≥1/month but <1/week; <1/month). Associations of daily frequency of laughter with increase in all-cause mortality and cardiovascular disease incidence were determined using Cox proportional hazards modeling.

resultsDuring follow-up (median, 5.4 years), 257 subjects died and 138 subjects experienced cardiovascular events. Kaplan-Meier analysis revealed that all-cause mortality and cardiovascular disease incidence were significantly higher among subjects with a low frequency of laughter (log-rank P < 0.01). Cox proportional hazard model analysis adjusted for age, gender, hypertension, smoking, and alcohol drinking status showed that risk of all-cause mortality was significantly higher in subjects who laughed <1/month than in subjects who laughed ≥1/week (hazard ratio [HR] 1.95; 95% confidence interval [CI], 1.16-3.09). Similarly, risk of cardiovascular events was higher in subjects who laughed ≥1/month but <1/week than in subjects who laughed ≥1/week (HR 1.62; 95% CI, 1.07-2.40).

conclusionDaily frequency of laughter represents an independent risk factor for all-cause mortality and cardiovascular disease in a Japanese general population.

Indexed as

LaughterAdultAgedAged, 80 and overCardiovascular DiseasesCause of DeathFemaleFollow-Up StudiesHumansIncidenceJapanKaplan-Meier EstimateMaleMiddle AgedProspective StudiesRisk Factorscardiovascular diseaselaughtermortalityYamagata study

Identifiers

PMID30956258
PMCPMC7064551
OpenAlexW2926269049

What OpenQuestion holds

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Registered trials

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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 OpenQuestion graph.