Evidence map›Paper›PMID 8343670›Full record

ArticleBMJ (Clinical research ed.)1993

Accuracy of diagnosis of psychosis on general practice computer system.

I Nazareth, M King, A Haines, L Rangel, S Myers

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in BMJ (Clinical research ed.), 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 4 pooled it
16.0field-weighted citation impact, top 1% 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

66 citing papers in PubMed, 4 syntheses or guidelines pooled it, 198 citations in OpenAlex.

  1. Validity of diagnostic coding within the General Practice Research Database: a systematic review.The British journal of general practice : the journal of the Royal College of General Practitioners · 2010
    Pooled it
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  5. Observational
  6. External validation of a prognostic model to improve prediction of psychosis: a retrospective cohort study in primary care.The British journal of general practice : the journal of the Royal College of General Practitioners · 2024
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  17. Mortality gap for people with bipolar disorder and schizophrenia: UK-based cohort study 2000-2014.The British journal of psychiatry : the journal of mental science · 2017
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6 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

I NazarethDepartment of Primary Health Care, University College London Medical School, Whittington Hospital.
M King
A Haines
L Rangel
S Myers
Whittington Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo determine the accuracy of diagnoses of schizophrenia and non-affective psychosis entered by general practitioners on a computer system. To compare recording of clinical events on computer with written records.

designExamination of case notes of all patients with a computer diagnosis of psychosis. Search of 8000 randomly selected patient records to identify patients with psychosis not recorded on computer and comparison of 141 computer and written entries for prescribing and consultation in each practice.

setting13 London practices on the VAMP research bank.

main outcome measuresAccuracy of record of psychosis compared with ICD 9, American Psychiatric Association diagnostic manual, and syndrome checklist criteria.

resultsComputer search revealed 102 patients with schizophrenia, 78 with other psychoses, and 71 with non-affective psychosis who had adequate case notes. The sensitivity and positive predictive value of the computer diagnosis of schizophrenia were 88% (95% confidence interval 62% to 98%) and 71% (48% to 88%). For all non-organic psychoses sensitivity was 91% (74% to 97%) and positive predictive value was 91% (74% to 98%). On average 95% of all known prescriptions and 74% of all consultations were recorded on computer compared with 42% and 75% in written records.

conclusionsRecording of psychotic illness on the VAMP computer is accurate and complete. Prescribing was more fully recorded on the computer than on the written records. Computer databases of well motivated general practitioners could be used for research.

Indexed as

Ambulatory Care Information SystemsFamily PracticeMedical Records Systems, ComputerizedHumansLondonMedical RecordsPredictive Value of TestsPsychotic DisordersRandom AllocationSchizophreniaSensitivity and Specificity

Identifiers

PMID8343670
PMCPMC1678461
OpenAlexW2092369059

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.