Cited by 217Endometriosis Research and TreatmentEctopic Pregnancy Diagnosis and ManagementReproductive Health and Contraception

Epidemiology of endometriosis in women attending family planning clinics

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Vessey, M P, Villard-Mackintosh, L, Painter, R·1993·BMJ

Abstract

OBJECTIVE: To describe the epidemiology of endometriosis in women attending family planning clinics with special reference to contraceptive methods. DESIGN: Non-randomised cohort study with follow up of subjects for up to 23 years. Disease was measured by first hospital admission rates since endometriosis can be diagnosed with accuracy only at laparotomy or laparoscopy. SETTING: 17 family planning centres in England and Scotland. SUBJECTS: 17,032 married white women aged 25-39 years at entry during 1968-74 who were taking oral contraceptives or using an intrauterine device or diaphragm. About 99% of the women approached agreed to participate and annual loss to follow up was about 0.3%. MAIN OUTCOME MEASURES: Diagnosis of endometriosis, age, parity, and history of contraceptive use. RESULTS: Endometriosis was significantly related to age, peaking at ages 40-44 (chi 2 for heterogeneity = 30.9, p < 0.001). Endometriosis was not linked to duration of taking oral contraceptives. Nevertheless, the risk of endometriosis was low in women currently taking oral contraceptives (relative risk 0.4; 95% confidence interval 0.2 to 0.7), but higher in women who had formerly taken them (1.8; 1.0 to 3.1 in women who had stopped 25-48 months previously) compared with women who had never taken the pill. A similar pattern was seen for use of intrauterine devices (relative risk 0.4 (0.2 to 0.7) in current users and 1.4 (0.4 to 3.2) in users 49-72 months previously compared with never users). No association was found between endometriosis and use of the diaphragm. CONCLUSIONS: Oral contraceptives seem to temporarily suppress endometriosis. Endometriosis may be diagnosed late in women using intrauterine devices as pain and bleeding occur with both.

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Authors
Vessey, M. P., Villard-Mackintosh, L., & Painter, R.
Affiliations
John Radcliffe Hospital (GB)
Venue
BMJ
Publisher
BMJ
Published
1993-01-16
Volume
306
Issue
6871
Pages
182-184
ISSN
  • 0007-1447 (ISSN-L)
  • 0959-8138
  • 1468-5833
OpenAlex
W1970997691
Cited by
217
References
8
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 3 · 2022: 3 · 2021: 2 · 2020: 5 · 2019: 5 · 2018: 5 · 2017: 4 · 2016: 8 · 2015: 3 · 2014: 9 · 2013: 8 · 2012: 10
FWCI
6.22
Type
journal article
Language
en
Open access
Locations
  • BMJ (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
Funders
Medical Research Council
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Endometriosis Research and Treatment
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ectopic Pregnancy Diagnosis and Management
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Health and Contraception
Keywords
endometriosis, epidemiology, oral contraceptives, intrauterine devices, diaphragm, contraceptive use, parity, age, family planning clinics, hospitalization, long-term follow-up
MeSH terms
Adult, Age Factors, Contraceptive Devices, Female, Contraceptives, Oral, Endometriosis, England, Family Planning Services, Female, Humans, Parity, Pelvic Neoplasms, Risk Factors, Time Factors, Cohort Studies

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