Breast cancer risk among women with psychiatric admission with affective or neurotic disorders: a nationwide cohort study in Denmark
1999

Breast cancer risk in women with psychiatric disorders

Sample size: 66648 publication Evidence: moderate

Author Information

Author(s): Hjerl K, Andersen E W, Keiding N, Sawitz A, Olsen J H, Mortensen P B, Jørgensen T

Primary Institution: Copenhagen University Hospital Corporation, Bispebjerg Hospital

Hypothesis

Do women with psychiatric admissions for affective or neurotic disorders have an increased risk of breast cancer?

Conclusion

Women with affective or neurotic disorders do not have an increased risk of breast cancer compared to the general population.

Supporting Evidence

  • The study included 66,648 women with 199,910 admissions and 775,522 person-years.
  • 1270 women with affective or neurotic disorders developed breast cancer, compared to 1242 expected.
  • The standardized incidence ratio was 1.02, indicating no increased risk.

Takeaway

This study looked at women who went to the hospital for mental health issues and found that they don't get breast cancer more than other women.

Methodology

The study used nationwide registers to compare breast cancer incidence in women with psychiatric admissions to national rates.

Limitations

The study only included women admitted to psychiatric departments and may not represent all women with psychiatric disorders.

Participant Demographics

Women admitted to psychiatric departments in Denmark between 1969 and 1993.

Statistical Information

Confidence Interval

95% confidence interval 0.97–1.08

Digital Object Identifier (DOI)

10.1038/sj.bjc.6690785

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