Evidence map›Paper›PMID 22152749›Full record

ArticleThe British journal of general practice : the journal of the Royal College of General Practitioners2011

Type and accuracy of sphygmomanometers in primary care: a cross-sectional observational study.

Christine A'Court, Richard Stevens, Sarah Sanders, Alison Ward, Richard McManus, Carl Heneghan

Abstract read
In one paragraph

Article in The British journal of general practice : the journal of the Royal College of General Practitioners, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
–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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Physics-Informed Emulation of Systemic Circulation for Fast Parameter Estimation and Uncertainty Quantification.International journal for numerical methods in biomedical engineering · 2026
    Article
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  10. Accuracy of blood-pressure monitors owned by patients with hypertension (ACCU-RATE study): a cross-sectional, observational study in central England.The British journal of general practice : the journal of the Royal College of General Practitioners · 2020
    Observational
  11. Article
  12. Article
  13. Article
  14. Article
  15. Blood pressure measurement: a call to arms.The British journal of general practice : the journal of the Royal College of General Practitioners · 2016
    Article
  16. Observational
  17. Article
  18. Accuracy of monitors used for blood pressure checks in English retail pharmacies: a cross-sectional observational study.The British journal of general practice : the journal of the Royal College of General Practitioners · 2016
    Observational
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Christine A'CourtDepartment of Primary Health Care, University of Oxford, Oxford. christine.acourt@phc.ox.ac.uk
Richard Stevens
Sarah Sanders
Alison Ward
Richard McManus
Carl Heneghan

Funding

Department of Health CDF/01/017
6 · The paper itself

Abstract

backgroundPrevious studies identified worrying levels of sphygmomanometer inaccuracy and have not been repeated in the era of digital measurement of blood pressure.

aimTo establish the type and accuracy of sphygmomanometers in current use. DESIGN AND

settingCross-sectional, observational study in 38 Oxfordshire primary care practices.

methodSphygmomanometers were evaluated between 50 and 250 mmHg, using Omron PA350 or Scandmed 950831-2 pressure meters.

resultsSix hundred and four sphygmomanometers were identified: 323 digital (53%), 192 aneroid (32%), 79 mercury (13%), and 10 hybrid (2%) devices. Of these, 584 (97%) could be fully tested. Overall, 503/584 (86%) were within 3 mmHg of the reference, 77/584 (13%) had one or more error of 4-9 mmHg, and 4/584 (<1%) had one or more error of more than 10 mmHg. Mercury (71/75, 95%) and digital (272/308, 88%) devices were more likely to be within 3 mmHg of the reference standard than aneroid models (150/191, 78%) (Fisher's exact test P = 0.001). Donated aneroid devices from the pharmaceutical industry performed significantly worse: 10/23 (43%) within 3 mmHg of standard compared to 140/168 (83%) aneroid models from recognised manufacturers (Fisher's exact test P<0.001). No significant difference was found in performance between manufacturers within each device type, for either aneroid (Fisher's exact test P = 0.96) or digital (Fisher's exact test P = 0.7) devices.

conclusionDigital sphygmomanometers have largely replaced mercury models in primary care and have equivalent accuracy. Aneroid devices have higher failure rates than other device types; this appears to be largely accounted for by models from indiscernible manufacturers. Given the availability of inexpensive and accurate digital models, GPs could consider replacing aneroid devices with digital equivalents, especially for home visiting.

Indexed as

Blood Pressure DeterminationCross-Sectional StudiesEnglandEquipment DesignGeneral PracticeHumansHypertensionQuality Assurance, Health CareSensitivity and SpecificitySphygmomanometers

Identifiers

PMID22152749
PMCPMC3162183

What OpenQuestion holds

Textmetadata
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 OpenQuestion graph.