Iris Brandes

Dr. Iris Brandes

orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
14 March 2012 in Human Reproduction
Verified
Journal Article
Open access
PDF file
SSSteven Simoens
Steven Simoens
GDGerard Dunselman
Gerard Dunselman
CDCarmen Dirksen
Carmen Dirksen
LHLone Hummelshoj
Lone Hummelshoj
ABAttila Bokor
Attila Bokor
TDThomas D'Hooghe
Thomas D'Hooghe
This study aimed to calculate costs and health-related quality of life of women with endometriosis-associated symptoms treated in referral centres. A prospective, multi-centre, questionnaire-based survey measured costs and quality of life in ambulatory care and in 12 tertiary care centres in 10 countries. The study enrolled women with a diagnosis of endometriosis and with at least one centre-specific contact related to endometriosis-associated symptoms in 2008. The main outcome measures were health care costs, costs of productivity loss, total costs and quality-adjusted life years. Predictors of costs were identified using regression analysis. Data analysis of 909 women demonstrated that the average annual total cost per woman was €9579 (95% confidence interval €8559–€10 599). Costs of productivity loss of €6298 per woman were double the health care costs of €3113 per woman. Health care costs were mainly due to surgery (29%), monitoring tests (19%) and hospitalization (18%) and physician visits (16%). Endometriosis-associated symptoms generated 0.809 quality-adjusted life years per woman. Decreased quality of life was the most important predictor of direct health care and total costs. Costs were greater with increasing severity of endometriosis, presence of pelvic pain, presence of infertility and a higher number of years since diagnosis. Our study invited women to report resource use based on endometriosis-associated symptoms only, rather than drawing on a control population of women without endometriosis. Our study showed that the economic burden associated with endometriosis treated in referral centres is high and is similar to other chronic diseases (diabetes, Crohn's disease, rheumatoid arthritis). It arises predominantly from productivity loss, and is predicted by decreased quality of life.

11 July 2013 in Human Reproduction
Verified
Journal Article
Open access
PDF file
AGA.A. De Graaff
A.A. De Graaff
TDT.M. D'Hooghe
T.M. D'Hooghe
GDG.A.J. Dunselman
G.A.J. Dunselman
CDC.D. Dirksen
C.D. Dirksen
LHL. Hummelshoj
L. Hummelshoj
MWM. Wullschleger
M. Wullschleger
To what extent do the management of endometriosis and the symptoms that remain after treatment affect the quality of life in women with the disease? Many women with endometriosis had impaired quality of life and continued to suffer from endometriosis-associated symptoms even though their endometriosis has been managed in tertiary care centres. The existing literature indicates that quality of life and work productivity is reduced in women with endometriosis. However, most studies have small sample sizes, are treatment related or examine newly diagnosed patients only. A cross-sectional questionnaire-based survey among 931 women with endometriosis treated in 12 tertiary care centres in 10 countries. Women diagnosed with endometriosis who had at least one contact related to endometriosis-associated symptoms during 2008 with a participating centre were enrolled into the study. The study investigated the effect of endometriosis on education, work and social wellbeing, endometriosis-associated symptoms and health-related quality of life, by using questions obtained from the World Endometriosis Research Foundation (WERF) GSWH instrument (designed and validated for the WERF Global Study on Women's Health) and the Short Form 36 version 2 (SF-36v2). Of 3216 women invited to participate in the study, 1450 (45%) provided informed consent and out of these, 931 (931/3216 = 29%) returned the questionnaires. Endometriosis had affected work in 51% of the women and affected relationships in 50% of the women at some time during their life. Dysmenorrhoea was reported by 59%, dyspareunia by 56% and chronic pelvic pain by 60% of women. Quality of life was decreased in all eight dimensions of the SF-36v2 compared with norm-based scores from a general US population (all P < 0.01). Multivariate regression analysis showed that number of co-morbidities, chronic pain and dyspareunia had an independent negative effect on both the physical and mental component of the SF-36v2. The fact that women were enrolled in tertiary care centres could lead to a possible over-representation of women with moderate-to-severe endometriosis, because the participating centres typically treat more complex and referred cases of endometriosis. The response rate was relatively low. Since there was no Institute Review Board approval to do a non-responder investigation on basic characteristics, some uncertainty remains regarding the representativeness of the investigated population. This international multicentre survey represents a large group of women with endometriosis, in all phases of the disease, which increases the generalizability of the data. Women still suffer from frequent symptoms, despite tertiary care management, in particular chronic pain and dyspareunia. As a result their quality of life is significantly decreased. A patient-centred approach with extensive collaboration across disciplines, such as pain specialists, psychologists, sexologists and social workers, may be a valuable strategy to improve the long-term care of women with endometriosis. The WERF EndoCost study is funded by the World Endometriosis Research Foundation (WERF) through grants received from Bayer Schering Pharma AG, Takeda Italia Farmaceutici SpA, Pfizer Ltd and the European Society of Human Reproduction and Embryology. The sponsors did not have a role in the design and conduct of the study; collection, management, analysis and interpretation of the data; and preparation, review or approval of the manuscript. L.H. is the chief executive and T.D. was a board member of WERF at the time of funding. T.D. holds the Merck-Serono Chair in Reproductive Medicine and Surgery, and the Ferring Chair in Reproductive Medicine at the Katholieke Universiteit Leuven in Belgium and has served as consultant/research collaborator for Merck-Serono, Schering-Plough, Astellas and Arresto.

14 December 2010 in Gynecologic and Obstetric Investigation
Verified
Journal Article
Closed access
SSSteven Simoens
Steven Simoens
LHLone Hummelshoj
Lone Hummelshoj
GDGerard Dunselman
Gerard Dunselman
IBIris Brandes
Iris Brandes
CDCarmen Dirksen
Carmen Dirksen
ECEndoCost Consortium
EndoCost Consortium
Aims: The EndoCost study aims to calculate the costs of endometriosis from a societal perspective. Methods: This multicentre, prevalence-based cost-of-illness analysis aggregates data on endometriosis costs and quality of life from a prospective hospital questionnaire and from both retrospective and prospective patient questionnaires. The EndoCost study comprises 12 representative tertiary care centres involved in the care of women with endometriosis in 10 countries. The sample includes patients with a laparoscopic and/or histological diagnosis of endometriosis and with at least 1 patient contact related to endometriosis during 2008. The EndoCost study measures direct healthcare costs (e.g. costs of medication, physician visits), direct non-healthcare costs (e.g. transportation costs), and indirect costs of productivity loss. Cost questions are developed specifically for the purpose of the EndoCost study. Quality of life is measured using the EuroQol-5D and relevant parts of the Global Study of Women’s Health instruments. Both aggregate analyses and country-specific analyses are planned for total costs per patient. Costs are broken down into cost drivers and into the various payers that incur costs. Conclusions: The cost estimates provided by the EndoCost cost-of-illness analysis may be used to justify the prioritisation of future research in endometriosis.

19 July 2024 in International Journal of Gynecology & Obstetrics
Verified
Journal Article
Open access
CHCarolin Harder
Carolin Harder
Renata Voltolini VelhoRenata Voltolini Velho
Renata Voltolini Velho
IBIris Brandes
Iris Brandes
JSJalid Sehouli
Jalid Sehouli
Sylvia MechsnerSylvia Mechsner
Sylvia Mechsner
Endometriosis is a gynecologic condition often described as the “chameleon of gynecology” because of its elusive symptoms. The World Health Organization acknowledges its severe impact on quality of life due to pain, fatigue, depression, and infertility. There is limited literature on the prevalence of endometriosis, knowledge of which is essential for effective prevention, treatment strategies, and funding. We aim to structure and present the published data on endometriosis prevalence, synthesizing the discrepancy between health insurance and clinical data. PubMed, Cochrane CENTRAL, and LIVIVO were researched for peer‐reviewed articles published between January 2000 and July 2023 on women of reproductive age. Health insurance companies argue that few women (~1%) are affected by endometriosis. Interestingly, the prevalence of clinical data studies (6.8%), population‐based surveys/self‐reported studies (6.6%), and symptomatic patient data (21%) revealed a different picture. Based on the data gathered, a multi‐layered prevalence model has been proposed to illustrate the large discrepancy in the prevalence numbers, leading to the disease being underestimated and underfunded. This variability may be influenced by the heterogeneity in designs and the analyzed data, and clinical complexity. In summary, this narrative review reveals that the prevalence of endometriosis is higher than health insurance and other stakeholders might have previously assumed.

17 March 2013 in Archives of Gynecology and Obstetrics
Verified
Journal Article
Closed access
PDF file
JPJohanna Prast
Johanna Prast
POPeter Oppelt
Peter Oppelt
ASAndreas Shamiyeh
Andreas Shamiyeh
OSOmar Shebl
Omar Shebl
IBIris Brandes
Iris Brandes
DHDietmar Haas
Dietmar Haas

23 March 2024 in Infection
Verified
Journal Article
Open access
PDF file
SPStephanie Pape
Stephanie Pape
SKSudip Jung Karki
Sudip Jung Karki
THTorben Heinsohn
Torben Heinsohn
IBIris Brandes
Iris Brandes
Marie-Luise DierksMarie-Luise Dierks
Marie-Luise Dierks
BLBerit Lange
Berit Lange
Purpose: Epidemiological TB data indicate differences in infection prevalence, progression rates, and clinical disease incidence between sexes. In contrast, evidence on sex-specific differential (post) TB case fatality in Europe has not been synthesized systematically. Methods: We searched electronic databases and grey literature up to December 2020 for studies reporting sex-stratified TB death data for Europe. The JBI critical appraisal tools served for bias risk assessment and subgroup analyses for studying heterogeneity. Random-effects models meta-analyses enabled estimating pooled relative risks of sex-associated TB fatality. Considering associations of comorbidities and risk factors on fatality differences, we applied relative risk meta-regression. Results: Based on 17,400 records screened, 117 studies entered quantitative analyses. Seventy-five studies providing absolute participant data with moderate quality and limited sex stratification reported 33 to 235,000 TB cases and 7 to 27,108 deaths. The pooled male-to-female TB fatality risk ratio was 1.4 [1.3–1.5]. Heterogeneity was high between studies and subgroups. Study time, concurrent comorbidities (e.g., HIV, diabetes, cancers), and mean participant ages showed no effect modification. We identified higher male TB fatality in studies with higher homelessness (coefficient 3.18, 95% CI [-0.59 to 6.94], p-value 0.10) and lower migrants proportion (coefficient − 0.24, 95% CI [− 0.5 to 0.04], p-value 0.09). Conclusion: We found 30–50% higher TB case fatality for males in Europe. Except for homelessness, migration, and a trend for some comorbidities, assessing effect modification could not reduce our meta-analysis’ high heterogeneity. Public health authorities should take heed of this higher risk of dying in male patients’ treatment services.