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EndometriosisNCT02511626

Quality of Life in Endometriosis - a Case Control Study

An observational study of Endometriosis and Quality of Life, run by University of Zurich at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Endometriosis, one of the most common diseases of women during their reproductive period., may present a chronic disabling disease with major impact on women's life. Therapeutic options are limited and recurrence of disease symptoms is frequent. Read more about this study

Who is it for?
Ages 18 years and older, women onlyHealthy volunteers can take part
Conditions the study is for
Endometriosis, Quality of Life, Pain
How many people
1,267 participants
Where
1 siteSwitzerland
Study dates
Jan 2010to Dec 2019
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Female Age >18 Case group: women with endometriosis Healthy volunteers in control group

Who may be able to join

  • female >18 years fluent German
  • Cases: diagnosis of endometriosis Control 1: no endometriosis, no chronic pain Control 2: no endometriosis, chronic abdominal/pelvic pain

Who cannot join

  • male (Except for partner questionnaires)
  • <18years
  • not fluent in German

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • Clinic for Reproductive Endocrinology, University Hospital Zurich

    Zurich, 8091

Other trials in Switzerland

About this study

Official title: Quality of Life in Endometriosis - a Case Control Study Using Internationally Validated Questionnaires

Endometriosis, one of the most common diseases of women during their reproductive period., may present a chronic disabling disease with major impact on women's life. Therapeutic options are limited and recurrence of disease symptoms is frequent.

The current study investigates the quality of life and several risk factors for the development of endometriosis as well as satisfaction with medical support in a minimum of 600 women with different stages of endometriosis and the same number of control women matched for age (± 3 years) and nationality. To evaluate specific features of endometriosis-associated pain a second group of 100 women with chronic abdominal/pelvic pain not related to endometriosis is investigated. Recruitment takes place in different university clinics, and districts hospitals in Switzerland, Germany. And Austria. Control women i.e. women without any evidence for endometriosis presenting for annual routine gynaecological controls are collected at the same places.

A composition of different internationally validated questionnaires as well as specific questions on dealing with endometriosis is used to collect information on the quality of life and potential risk factors for endometriosis. Questions on sexuality and partnership are also distributed to women's partners. All diagnosis of endometriosis and classification of ASRM (American Society for Reproductive Medicine) disease stages are based on woman's medical charts.

Read the detailed description

With a prevalence of 7-10% endometriosis is one of the most common diseases of women during their reproductive period. There is a broad range of clinical symptoms of endometriosis, which may vary between an incidental asymptomatic finding and a chronic severely painful disease. Symptoms are nearly independent from disease stage and current therapeutic options do not permit to reliably reduce symptoms to an acceptable level. Independent from the therapy chosen, about 20% of women re-develop clinical symptoms in the first year and another 50% within a period of five years.

The currently provided medical support concentrates on surgical and medical i.e. hormonal options. Although it seems evident that endometriosis-associated pain will have a serious impact on the daily life of women attaint and there is a broad literature on the effect of other chronic pain diseases on patients' lives, comparable data for endometriosis are rare. Also, support models to allow women to integrate a chronic endometriosis into their daily life are currently lacking. To provide a reliable basis for the development of better holistic support models, the current study collects data on different aspects of the quality of life in a minimum of 600 women with different stages of endometriosis and a minimum of 600 control women matched for age (± 3 years) and nationality. To evaluate which features of the quality of life are specific for endometriosis a second control group of 100 women with chronic abdominal/pelvic pain not related to endometriosis is investigated. Recruitment takes place in different university clinics, and districts hospitals in Switzerland, Germany and Austria. Control women i.e. women without any evidence for endometriosis presenting for annual routine gynaecological controls are collected at the same places.

A composition of different internationally validated questionnaires as well as specific questions on dealing with endometriosis is used to collect information on the quality of life and potential risk factors for endometriosis. The questionnaire includes basic socio-demographic data, life style parameters, a general as well as gynaeco-obstetric history including detailed questions on the diagnosis, treatment and current symptoms of endometriosis. In addition questionnaires on pain (modified version of the Brief Pain Inventory (BPI), Pain Disability Index (PDI), resources (SOC), stress perception (PSQ20), professional development, satisfaction with medical support, adverse childhood experiences (modified version of the childhood trauma questionnaire (CTQ), daily life, partnership (Partnerschaftsfragebogen, PFB), sexuality (modified version of the Brief Index of Sexual Functioning and Global sexual functioning) and anxiety/depression (PHQ, GAD) have to be completed by study participants. Socio-demographic questions, questions on partnership as well as on the estimated impact of endometriosis on partnership /sexuality were also given to study participants' partners. In addition to the current quality of life potential risk factors for the development of endometriosis e.g. traumatic childhood experiences are evaluated as well as satisfaction with medical support are evaluated.

All diagnosis of endometriosis and classification of ASRM disease stages are based on woman's medical charts.

Keywords
endometriosis, quality of life, professional activity, pain, infertility, sexuality, partnership, anxiety, depression, stress, childhood trauma, medical support, dyspareunia
Medical subject headings
Endometriosis, Pain, Sexuality, Anxiety Disorders, Depression, Infertility, Dyspareunia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT02511626
Study groupRoleWhat they receive
Case groupWomen with a surgically confirmed diagnosis of endometriosis
Control group 1Women without any evidence of endometriosis (= no clinical symptom and/or no surgical evidence of endometriosis)
Control group 2Women without endometriosis (surgically confirmed) but chronic abdominal/pelvic pain due to other reasons (e.g. Crohn's disease, colitis etc)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Quality of life i.e. pain, infertility, partnership, sexuality, depression, anxiety, stress, medical support, comorbidities and risk factors in the development of endometriosis: childhood trauma, life style factors, menstrual history

    The outcome measures are assessed with internationally validated questionnaires i.e. modified version of the Brief Pain Inventory and Pain Disability Index, modified Form des Childhood Trauma Questionnaire, Brief Symptom Inventory, partnership questionnaire (PFB), modified version of the Brief Index of Sexual Functioning und Global sexual functioning, Hospital Anxiety and Depression Scale (HADS) as well as the questionnaire on life satisfaction (FLZ)

    Measured: The questionnaire is answered once after at inclusion in the study, different questions cover different time periods ranging from childhood (0-17 years) to the actual situation (last 4 weeks/ 24hours) as specified in the questionnaire

Secondary outcomes (2)
  1. Prevalences of diseases such as dyspareunia, sexual disorders or adverse childhood experiences in the control group.

    Measurements with internationally validated questionnaires and womens' medical history according to medical charts

    Measured: Once at inclusion in the study

  2. Comorbidity of chronic pain.

    Measurements with internationally validated questionnaires and womens' medical history according to medical charts

    Measured: Once at inclusion in the study

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted30 Jul 2015 (estimated)
  2. Study startJan 2010
  3. Primary completionDec 2016
  4. Study completionDec 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Cross-sectional
Enrolment
1,267 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02511626
Sponsor's protocol ID
Endo_QOL
Status last verified
Sep 2022
First submitted
20 Jul 2015
Last updated
28 Sep 2022
Results posted
No
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Candan A, Kohl Schwartz A, Birchler K, Leeners B. Psychosomatic comorbidity in endometriosis: A multi-center, cross-sectional study identifying an underestimated factor in current medical support. J Psychosom Res. 2025 Sep;196:112346. doi: 10.1016/j.jpsychores.2025.112346. Epub 2025 Aug 9.

    PubMed 40815907
  • El Hadad S, Schwartz ASK, Gassner C, Haeberlin F, von Orelli S, Imesch P, Leeners B. Partnership and relationship happiness in endometriosis related chronic pelvic pain: a multicenter case-control study. Front Psychol. 2024 Oct 14;15:1382067. doi: 10.3389/fpsyg.2024.1382067. eCollection 2024.

    PubMed 39469237
  • El-Hadad S, Lasser D, Sachs MK, Schwartz ASK, Haeberlin F, von Orelli S, Eberhard M, Leeners B. Dysmenorrhea in adolescents requires careful investigation of endometriosis-an analysis of early menstrual experiences in a large case-control study. Front Reprod Health. 2023 Aug 25;5:1121515. doi: 10.3389/frph.2023.1121515. eCollection 2023.

    PubMed 37693279
  • Sperschneider ML, Hengartner MP, Kohl-Schwartz A, Geraedts K, Rauchfuss M, Woelfler MM, Haeberlin F, von Orelli S, Eberhard M, Maurer F, Imthurn B, Imesch P, Leeners B. Does endometriosis affect professional life? A matched case-control study in Switzerland, Germany and Austria. BMJ Open. 2019 Jan 9;9(1):e019570. doi: 10.1136/bmjopen-2017-019570.

    PubMed 30782670
  • Ramin-Wright A, Schwartz ASK, Geraedts K, Rauchfuss M, Wolfler MM, Haeberlin F, von Orelli S, Eberhard M, Imthurn B, Imesch P, Fink D, Leeners B. Fatigue - a symptom in endometriosis. Hum Reprod. 2018 Aug 1;33(8):1459-1465. doi: 10.1093/humrep/dey115.

    PubMed 29947766
  • Liebermann C, Kohl Schwartz AS, Charpidou T, Geraedts K, Rauchfuss M, Wolfler M, von Orelli S, Haberlin F, Eberhard M, Imesch P, Imthurn B, Leeners B. Maltreatment during childhood: a risk factor for the development of endometriosis? Hum Reprod. 2018 Aug 1;33(8):1449-1458. doi: 10.1093/humrep/dey111.

    PubMed 29947745
  • Kohl Schwartz AS, Wolfler MM, Mitter V, Rauchfuss M, Haeberlin F, Eberhard M, von Orelli S, Imthurn B, Imesch P, Fink D, Leeners B. Endometriosis, especially mild disease: a risk factor for miscarriages. Fertil Steril. 2017 Nov;108(5):806-814.e2. doi: 10.1016/j.fertnstert.2017.08.025.

    PubMed 29079275

Questions about this trial

What is this clinical trial studying?

An observational study of Endometriosis and Quality of Life, run by University of Zurich at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 28 Sep 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Quality of life i.e. pain, infertility, partnership, sexuality, depression, anxiety, stress, medical support, comorbidities and risk factors in the development of endometriosis: childhood trauma, life style factors, menstrual history (time frame: The questionnaire is answered once after at inclusion in the study, different questions cover different time periods ranging from childhood (0-17 years) to the actual situation (last 4 weeks/ 24hours) as specified in the questionnaire). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02511626, which also lists 7 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Sep 2022.

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