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Dive into the research topics where Karin M. Vermeulen is active.

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Featured researches published by Karin M. Vermeulen.


Value in Health | 2016

Dutch Tariff for the Five-Level Version of EQ-5D

Matthijs M. Versteegh; Karin M. Vermeulen; Silvia M. A. A. Evers; G. Ardine de Wit; Rilana Prenger; Elly A. Stolk

BACKGROUND In 2009, a new version of the EuroQol five-dimensional questionnaire (EQ-5D) was introduced with five rather than three answer levels per dimension. This instrument is known as the EQ-5D-5L. To make the EQ-5D-5L suitable for use in economic evaluations, societal values need to be attached to all 3125 health states. OBJECTIVES To derive a Dutch tariff for the EQ-5D-5L. METHODS Health state values were elicited during face-to-face interviews in a general population sample stratified for age, sex, and education, using composite time trade-off (cTTO) and a discrete choice experiment (DCE). Data were modeled using ordinary least squares and tobit regression (for cTTO) and a multinomial conditional logit model (for DCE). Model performance was evaluated on the basis of internal consistency, parsimony, goodness of fit, handling of left-censored values, and theoretical considerations. RESULTS A representative sample (N = 1003) of the Dutch population participated in the valuation study. Data of 979 and 992 respondents were included in the analysis of the cTTO and the DCE, respectively. The cTTO data were left-censored at -1. The tobit model was considered the preferred model for the tariff on the basis of its handling of the censored nature of the data, which was confirmed through comparison with the DCE data. The predicted values for the EQ-5D-5L ranged from -0.446 to 1. CONCLUSIONS This study established a Dutch tariff for the EQ-5D-5L on the basis of cTTO. The values represent the preferences of the Dutch population. The tariff can be used to estimate the impact of health care interventions on quality of life, for example, in context of economic evaluations.


PLOS ONE | 2009

Costs and Effects of Abdominal versus Laparoscopic Hysterectomy: Systematic Review of Controlled Trials

Claudia B.M. Bijen; Karin M. Vermeulen; Marian J.E. Mourits; Geertruida H. de Bock

Objective Comparative evaluation of costs and effects of laparoscopic hysterectomy (LH) and abdominal hysterectomy (AH). Data sources Controlled trials from Cochrane Central register of controlled trials, Medline, Embase and prospective trial registers. Selection of studies Twelve (randomized) controlled studies including the search terms costs, laparoscopy, laparotomy and hysterectomy were identified. Methods The type of cost analysis, perspective of cost analyses and separate cost components were assessed. The direct and indirect costs were extracted from the original studies. For the cost estimation, hospital stay and procedure costs were selected as most important cost drivers. As main outcome the major complication rate was taken. Findings Analysis was performed on 2226 patients, of which 1013 (45.5%) in the LH group and 1213 (54.5%) in the AH group. Five studies scored ≥10 points (out of 19) for methodological quality. The reported total direct costs in the LH group (


British Journal of Dermatology | 2010

A randomized controlled trial in children with eczema: nurse practitioner vs. dermatologist

Marielouise Schuttelaar; Karin M. Vermeulen; N Drukker; Pieter Jan Coenraads

63,997) were 6.1% higher than the AH group (


General Hospital Psychiatry | 2003

Long-term quality of life in patients surviving at least 55 months after lung transplantation

Karin M. Vermeulen; Jan-Paul Ouwens; Wim van der Bij; Wim J de Boer; Gerard H. Koëter; Elisabeth M TenVergert

60,114). The reported total indirect costs of the LH group (


Pharmacy World & Science | 1999

Changing doctor prescribing behaviour

Paramjit Gill; M Makela; Karin M. Vermeulen; Nick Freemantle; G Ryan; T Thorsen; Flora Haaijer-Ruskamp

1,609) were half of the total indirect in the AH group (


European Journal of Heart Failure | 2013

Preferences of heart failure patients in daily clinical practice: quality of life or longevity?

Imke H. Kraai; Karin M. Vermeulen; Marie Louise Luttik; Tialda Hoekstra; Trijntje Jaarsma; Hans L. Hillege

3,139). The estimated mean major complication rate in the LH group (14.3%) was lower than in the AH group (15.9%). The estimated total costs in the LH group were


British Journal of Dermatology | 2011

Costs and cost-effectiveness analysis of treatment in children with eczema by nurse practitioner vs. dermatologist : results of a randomized, controlled trial and a review of international costs

Marie L. Schuttelaar; Karin M. Vermeulen; Pieter Jan Coenraads

3,884 versus


Clinical Transplantation | 2004

The effect of bronchiolitis obliterans syndrome on health related quality of life

Karin M. Vermeulen; Henk Groen; Wim van der Bij; Michiel E. Erasmus; Gerard H. Koëter; Elisabeth M. TenVergert

3,312 in the AH group. The incremental costs for reducing one patient with major complication(s) in the LH group compared to the AH group was


European Journal of Cancer | 2011

Laparoscopic hysterectomy is preferred over laparotomy in early endometrial cancer patients, however not cost effective in the very obese

Claudia B.M. Bijen; Geertruida H. de Bock; Karin M. Vermeulen; Henriette J.G. Arts; Henk G. ter Brugge; Rob van der Sijde; Arjen. A. Kraayenbrink; Marlies Y. Bongers; Ate G.J. van der Zee; Marian J.E. Mourits

35,750. Conclusions The shorter hospital stay in the LH group compensates for the increased procedure costs, with less morbidity. LH points in the direction of cost effectiveness, however further research is warranted with a broader costs perspective including long term effects as societal benefit, quality of life and survival.


Psychological Reports | 2001

Quality of life before and after lung transplantation in patients with emphysema versus other indications.

Em TenVergert; Karin M. Vermeulen; Albert Geertsma; Pj van Enckevort; W.J. de Boer; W. van der Bij; Gh Koeter

Background  We hypothesized that a nurse practitioner would improve the quality of life of a child with eczema more than a dermatologist because of a structured intervention and more consultation time.

Collaboration


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Erik Buskens

University Medical Center Groningen

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Janny H. Dekker

University Medical Center Groningen

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Michiel E. Erasmus

University Medical Center Groningen

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Wim van der Bij

University Medical Center Groningen

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Paul F. M. Krabbe

University Medical Center Groningen

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Elisabeth M. TenVergert

University Medical Center Groningen

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Boudewijn J. Kollen

University Medical Center Groningen

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Hans L. Hillege

University Medical Center Groningen

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Imke H. Kraai

University Medical Center Groningen

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Pieter Jan Coenraads

University Medical Center Groningen

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