Cited by 175Schizophrenia research and treatmentGlobal Cancer Incidence and ScreeningCancer, Stress, Anesthesia, and Immune Response

The incidence of cancer in schizophrenic patients.

Open access
Mortensen, P B·1989·Journal of Epidemiology and Community Health

Abstract

A cohort of 6168 schizophrenic patients was followed from 1957 to 1984 to determine the incidence of cancer in these patients. In the male schizophrenic patients the incidence of cancer was found to be significantly reduced in comparison with the general Danish population. This reduction was especially marked for cancer in the respiratory system, cancer of the prostate and cancer of the bladder. In the female patients the overall incidence of cancer did not differ from that of the general Danish population, but there was an increased risk of cancer of the digestive tract, especially cancer of the pancreas and a slight increase of the risk of breast cancer. In the female patients the risk of respiratory cancers and cancer of the female genital organs, especially cancer of the uterine cervix, was reduced. These alterations of the incidence of cancer in schizophrenic patients cannot be ascribed to differences in diagnostic accuracy. As a possible explanation of these findings a reduced exposure to well known carcinogens such as cigarette smoke may be relevant. We speculate that exposure to neuroleptics such as phenothiazines and reserpine may also be part of the explanation for the findings.

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/jech.43.1.43

Cites

35 of 35 references verified0 citation errors · 0 not checkable

Statistics

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

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

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

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

Cites

Flagged first, then by citations

Research works printed but not linked: 7

  1. 2du Pan RM, Muller C. La mortalite par cancer chez les patients psychiatriques hospitalis&es. Schweiz Med Wochenschr 1977; 107: 597-604.
  2. Katz J, Kunofsky S, Patton RE, Allaway NC. Cancer mortality among patients in New York Mental Hospitals. Cancer 1967; 20: 2194-9.
  3. Ciompi L, Muller C. Lebensweg und Alter der Schizophrenen, Eine katamnestische Langzeitstudie bis ins Senium. Berlin, Heidelberg, New York: Springer-Verlag, 1976.
  4. 7Dupont A, Jensen OM, Stromgren E, Jablensky A. Incidence of cancer in patients diagnosed as schizophrenic in Denmark. In: ten Horn GHMM, Giel R, Gulbinat WH, Henderson JH, eds. Psychiatric case registers in public health. A worldwide inventory 1960- 1985. Amsterdam, New York, Oxford: Elsevier, 1986: 229-39. Protected by copyright. on August 7, 2023 by guest. http://jech.bmj.com/ J Epidemiol Community Health: first published as 10.1136/jech.43.1.43 on 1 March 1989. Downloaded from The incidence of cancer in schizophrenic patients 8 Nakane Y, Ohta Y. The example of linkage with a cancer register. In: ten Horn GHMM, Giel R, Gulbinat WH, Henderson JH, eds. Psychiatric case registers in public health. A worldwide inventory 1960-1985. Amsterdam, New York, Oxford: Elsevier, 1986: 240-5.
  5. 10Arentsen K, Str6mgren E. Patients in Danish psychiatric hospitals. Acta Jutlandica 1959; 31, Medicinsk serie 9. l Andersen TF. Genanvendelse afhistoriske datamaterialer. Ugeskr Laeger 1980; 142: 1054-8.
  6. 190sterlind A, Jensen OM. Evaluering af cancer- registreringen i Danmark. En prmliminwr evaluering af cancerregistrering og landspatientregisterets registrering af cancertilfaelde. Ugeskr Laeger 1985; 147: 2483-8.
  7. 25Mortensen PB. Cancerdiagnostik og autopsifrekvens blandt skizofrene patienter. Ugeskr Laeger 1987; 149: 1973-5.

Cited by

Sorted by citations

Authors
Mortensen, P. B.
Affiliations
Aarhus University Hospital (DK)
Corresponding author
Mortensen, P B
Venue
Journal of Epidemiology and Community Health
Publisher
BMJ
Published
1989-03
Volume
43
Issue
1
Pages
43-47
ISSN
  • 0141-7681 (ISSN-L)
  • 0143-005X
  • 1470-2738
OpenAlex
W2149986615
Cited by
175
References
35
Citations by year
2026: 2 · 2025: 2 · 2024: 6 · 2023: 6 · 2022: 9 · 2021: 7 · 2020: 7 · 2019: 6 · 2018: 8 · 2017: 5 · 2016: 7 · 2015: 5 · 2014: 2 · 2013: 8 · 2012: 5
FWCI
3.68
Type
journal article
Language
en
Open access
Locations
  • Journal of Epidemiology & Community Health (publishedVersion)
  • PubMed Central (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Health Sciences › Medicine › Oncology › Global Cancer Incidence and Screening
  • Health Sciences › Medicine › Psychiatry and Mental health › Cancer, Stress, Anesthesia, and Immune Response
Keywords
schizophrenia, cancer incidence, respiratory cancer, prostate cancer, bladder cancer, digestive tract cancer, pancreatic cancer, breast cancer, uterine cervix cancer, sex differences, cigarette smoking, antipsychotic drugs, phenothiazines, reserpine, carcinogen exposure
MeSH terms
Denmark, Female, Humans, Male, Neoplasms, Risk Factors, Schizophrenia

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