Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 361

The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.

Diurnal, weekly and seasonal variation of sudden death. Population-based analysis of 24061 consecutive cases

Arntz, H·2000·European Heart Journal

Abstract

AIMS: Several studies have reported circadian and seasonal variations in acute cardiovascular disease. In addition, a weekly variation has been observed in acute myocardial infarction. The aim of our study was to determine the circadian weekly, and seasonal variations of sudden death utilizing population-based data. METHODS AND RESULTS: We analysed the emergency medical system data of Berlin (West) from 1987-1991 with respect to all consecutive sudden deaths in subjects >18 years (n=24 061). There was a marked circadian variation of sudden death, with a minimum between 0 and 6 h and a maximum between 6 and 12 h (P<0.0001) for every day of the week. A minimum of events occurred on Sundays (n=3143), and a maximum on Mondays (n=3721), corresponding to a relative increase of 18.3% (P<0.0001). The increase was more pronounced (23.6%) in patients < or =65 than in patients >65 (15.7%). In addition, we found a significant seasonal variation (P<0.0001) in events, with a maximum during winter (December to February, n=6493), and a minimum during summer (June to August, n=5472), corresponding to a relative difference of 18.7%. The seasonal variation was more pronounced in patients >65 years. CONCLUSION: The present analyses demonstrate marked variations in the occurrence of sudden death with peaks during morning hours, on Mondays, and during winter months. The findings suggest that the onset of sudden death may be associated with endogenous rhythms and external factors including climatic conditions.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1053/euhj.1999.1739

Cites

30 of 30 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 30 references

Cited by

See all 361

Metadata

Authors
Arntz, H.
Venue
European Heart Journal
Published
2000-02-15
Volume
21
Issue
4
Pages
315-320
ISSN
0195-668X (ISSN-L)
OpenAlex
W2156494424
Cited by
361
References
30
FWCI
6.35
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Diurnal, weekly and seasonal variation of sudden death. Population-based analysis of 24061 consecutive cases. https://app.cochat.ai/papers/10.1053/euhj.1999.1739
The paper
Arntz, H. (2000). Diurnal, weekly and seasonal variation of sudden death. Population-based analysis of 24061 consecutive cases. European Heart Journal. https://doi.org/10.1053/euhj.1999.1739

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.