Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 351

The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.

The influence of age, sex and other variables on the plasma level of N-terminal pro brain natriuretic peptide in a large sample of the general population

Open access
Raymond, I, Groenning, B A, Hildebrandt, P R, Nilsson, J C, Baumann, M, Trawinski, J, Pedersen, F·2003·Heart

Abstract

Objective: To identify potentially confounding variables for the interpretation of plasma N-terminal pro brain natriuretic peptide (NT-proBNP). Design: Randomly selected subjects filled in a heart failure questionnaire and underwent pulse and blood pressure measurements, ECG, echocardiography, and blood sampling. Setting: Subjects were recruited from four Copenhagen general practices located in the same urban area and were examined in a Copenhagen University Hospital. Patients: 382 women and 290 men in four age groups: 50–59 years (n = 174); 60–69 years (n = 204); 70–79 years (n = 174); and > 80 years (n = 120). Main outcome measures: Associations between the plasma concentration of NT-proBNP and a range of clinical variables. Results: In the undivided study sample, female sex (p < 0.0001), greater age (p < 0.0001), increasing dyspnoea (p = 0.0001), diabetes mellitus (p = 0.01), valvar heart disease (p = 0.002), low heart rate (p < 0.0001), left ventricular ejection fraction ⩽ 45% (p < 0.0001), abnormal ECG (p < 0.0001), high log 10[plasma creatinine] (p = 0.0009), low log 10[plasma glycosylated haemoglobin A1c] (p = 0.0004), and high log 10[urine albumin] (p < 0.0001) were independently associated with a high plasma log 10[plasma NT-proBNP] by multiple linear regression analysis. Conclusions: A single reference interval for the normal value of NT-proBNP is unlikely to suffice. There are several confounders for the interpretation of a given NT-proBNP concentration and at the very least adjustment should be made for the independent effects of age and sex.

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 · 10.1136/heart.89.7.745

Cites

23 of 23 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 23 references

Cited by

See all 351

Metadata

Authors
Raymond, I., Groenning, B. A., Hildebrandt, P. R., Nilsson, J. C., Baumann, M., Trawinski, J., & Pedersen, F.
Venue
Heart
Publisher
BMJ
Published
2003-07
Volume
89
Issue
7
Pages
745-751
ISSN
  • 1355-6037 (ISSN-L)
  • 1468-201X
OpenAlex
W2153845023
Cited by
351
References
23
FWCI
15.30
Type
journal article
Language
en
Open access
bronze

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: The influence of age, sex and other variables on the plasma level of N-terminal pro brain natriuretic peptide in a large sample of the general population. https://app.cochat.ai/papers/10.1136/heart.89.7.745
The paper
Raymond, I., Groenning, B. A., Hildebrandt, P. R., Nilsson, J. C., Baumann, M., Trawinski, J., & Pedersen, F. (2003). The influence of age, sex and other variables on the plasma level of N-terminal pro brain natriuretic peptide in a large sample of the general population. Heart. https://doi.org/10.1136/heart.89.7.745

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.