The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Blood pressure and five year survival in the very old
Open accessAbstract
During 1977-8 we measured blood pressure in 561 old people (83% of those aged 85 or more living in Tampere) and analysed their five year survival according to their blood pressure group. The subjects were divided into six groups on the basis of their blood pressures (from less than 120 to greater than 200 mm Hg systolic, from less than 70 to greater than 110 diastolic). The greatest mortality was observed in those in the lowest systolic and lowest diastolic groups. Mortality was least in subjects with systolic pressures of 160 mm Hg or more and diastolic pressures of 90 mm Hg or more. The most essential finding in this series of the very old was an increased mortality in the lowest blood pressure groups.
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.
Integrity signals
Registry
Cites
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.
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
Cardiovascular Survey Methods.
(1968) · Annals of Internal Medicine · doi:10.7326/0003-4819-69-6-1335_2 · Cited by 3,052
Cancer Survival Corrected for Heterogeneity in Patient Withdrawal
Hakulinen, T. (1982) · Biometrics · doi:10.2307/2529873 · Cited by 453
A computer program package for relative survival analysis
Hakulinen, T., & Abeywickrama, K. H. (1985) · Computer Programs in Biomedicine · doi:10.1016/0010-468x(85)90011-x · Cited by 344
Blood pressure reduction in elderly: a randomised controlled trial of methyldopa.
Sprackling, M., Mitchell, J. R. A., Short, A. H., & Watt, G. C. M. (1981) · BMJ · doi:10.1136/bmj.283.6300.1151 · Cited by 90
HYPERTENSION and coronary heart disease: classification and criteria for epidemiological studies.
(1959) · PubMed · Cited by 89
Five‐year Mortality in the City of Bergen, Norway, According to Age, Sex and Blood Pressure
Holme, I., & Waaler, H. T. (1976) · Acta Medica Scandinavica · doi:10.1111/j.0954-6820.1976.tb08224.x · Cited by 66
Franklin, S. S. (1983) · Medical Clinics of North America · doi:10.1016/s0025-7125(16)31211-1 · Cited by 21
Cited by
The Cardiovascular Health Study: design and rationale.
Fried, L. P., Borhani, N. O., Enright, P., Furberg, C. D., Gardin, J. M., Kronmal, R. A., Kuller, L. H., Manolio, T. A., Mittelmark, M. B., Newman, A., et al. (1991) · Annals of Epidemiology · doi:10.1016/1047-2797(91)90005-w · Cited by 3,652
Treatment of hypertension in patients 80 years of age or older
Beckett, N. S., Peters, R., Fletcher, A. E., Staessen, J. A., Liu, L., Dumitrascu, D., Stoyanovsky, V., Antikainen, R. L., Nikitin, Y., Anderson, C., et al. (2008) · New England Journal of Medicine · doi:10.1056/nejmoa0801369 · Cited by 3,092
Morbidity and mortality in the Swedish Trial in Old Patients with Hypertension (STOP-Hypertension)
Dahlöf, B., Hansson, L., Lindholm, L. H., Scherstén, B., Ekbom, T., & Wester, P.-O. (1991) · The Lancet · doi:10.1016/0140-6736(91)92589-t · Cited by 1,881
Aronow, W. S., Fleg, J. L., Pepine, C. J., Artinian, N. T., Bakris, G., Brown, A. S., Ferdinand, K. C., Forciea, M. A., Frishman, W. H., Jaigobin, C., et al. (2011) · Circulation · doi:10.1161/cir.0b013e31821daaf6 · Cited by 614
O’Hare, A. M., Katz, R., Shlipak, M. G., Cushman, M., & Newman, A. B. (2006) · Circulation · doi:10.1161/circulationaha.105.570903 · Cited by 309
Metadata
- Authors
- Mattila, K., Haavisto, M., Rajala, S., & Heikinheimo, R.
- Venue
- BMJ
- Publisher
- BMJ
- Published
- 1988-03-26
- Volume
- 296
- Issue
- 6626
- Pages
- 887-889
- ISSN
- 0007-1447 (ISSN-L)
- 0959-8138
- 1468-5833
- OpenAlex
- W2060497747
- Cited by
- 272
- References
- 7
- FWCI
- 7.72
- 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: Blood pressure and five year survival in the very old. https://app.cochat.ai/papers/10.1136/bmj.296.6626.887
- The paper
- Mattila, K., Haavisto, M., Rajala, S., & Heikinheimo, R. (1988). Blood pressure and five year survival in the very old. BMJ. https://doi.org/10.1136/bmj.296.6626.887
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.
