Carin A. Uyl-de Groot
Erasmus University Rotterdam
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Publication
Featured researches published by Carin A. Uyl-de Groot.
Journal of Clinical Oncology | 2006
Gerarda J.M. Herder; Henk Kramer; Otto S. Hoekstra; Egbert F. Smit; Jan Pruim; Harm van Tinteren; Emile F.I. Comans; Paul Verboom; Carin A. Uyl-de Groot; Alle Welling; Marinus A. Paul; Maarten Boers; Pieter E. Postmus; Gerrit J.J. Teule; Harry J.M. Groen
PURPOSE We investigated whether application of positron emission tomography (PET) immediately after first presentation might simplify staging while maintaining accuracy, as compared with traditional strategy in routine clinical setting. METHODS At first presentation, patients with a provisional diagnosis of lung cancer without overt dissemination were randomly assigned to traditional work-up (TWU) according to international guidelines or early PET followed by histologic/cytologic verification of lesions, or imaging and follow-up. Patients with [18F] fluorodeoxyglucose (18FDG) -avid, noncentral tumors without suspicion of mediastinal or distant metastases on PET proceeded directly to thoracotomy. Follow-up in presumed benign lesions was at least 12 months. In patients treated with surgery or neoadjuvant therapy, the quality of staging was measured by comparing the clinical stage to the final stage (combination of peroperative staging and 6 months of follow-up). To investigate test substitution, we analyzed the number of (non)invasive tests to achieve clinical TNM staging, and its associated costs. RESULTS Between 1999 and 2001, 465 patients (233 TWU, 232 PET) were enrolled at 22 hospitals. The mean (standard deviation) number of procedures to finalize staging was equal in the TWU arm and the PET arm: 7.9 (2.0) v 7.9 (1.9), P = .90, respectively. Mediastinoscopies occurred significantly less often in the PET arm. Agreement between clinical and final stage was good in both arms (kappa = .85 v .78; P = .07). Costs did not differ significantly. CONCLUSION Up-front 18FDG-PET in patients with (suspected) lung cancer does not reduce the overall number of diagnostic test, but it maintains quality of TNM staging with the use of less invasive surgery.
European Journal of Nuclear Medicine and Molecular Imaging | 2003
Paul Verboom; Harm van Tinteren; Otto S. Hoekstra; Egbert F. Smit; Jan Ham van den Bergh; Ad J.M. Schreurs; Roland A. L. M. Stallaert; Piet Cm van Velthoven; Emile F.I. Comans; Fred W. Diepenhorst; Johan C. van Mourik; Pieter E. Postmus; Maarten Boers; E. W. M. Grijseels; Gerrit J.J. Teule; Carin A. Uyl-de Groot
Currently, up to 50% of the operations in early-stage non-small cell lung cancer (NSCLC) are futile owing to the presence of locally advanced tumour or distant metastases. More accurate pre-operative staging is required in order to reduce the number of futile operations. The cost-effectiveness of fluorine-18 fluorodeoxyglucose positron emission tomography (18FDG-PET) added to the conventional diagnostic work-up was studied in the PLUS study. Prior to invasive staging and/or thoracotomy, 188 patients with (suspected) NSCLC were randomly assigned to conventional work-up (CWU) and whole-body PET or to CWU alone. CWU was based on prevailing guidelines. Pre-operative staging was followed by 1 year of follow-up. Outcomes are expressed in the percentage of correctly staged patients and the associated costs. The cost price of PET varied between €736 and €1,588 depending on the (hospital) setting and the procurement of 18FDG commercially or from on-site production. In the CWU group, 41% of the patients underwent a futile thoracotomy, whereas in the PET group 21% of the thoracotomies were considered futile (P=0.003). The average costs per patient in the CWU group were €9,573 and in the PET group, €8,284. The major cost driver was the number of hospital days related to recovery from surgery. Sensitivity analysis on the cost and accuracy of PET showed that the results were robust, i.e. in favour of the PET group. The addition of PET to CWU prevented futile surgery in one out of five patients with suspected NSCLC. Despite the additional PET costs, the total costs were lower in the PET group, mainly due to a reduction in the number of futile operations. The additional use of PET in the staging of patients with NSCLC is feasible, safe and cost saving from a clinical and from an economic perspective.
Breast Journal | 2006
Mt Groot; Rob Baltussen; Carin A. Uyl-de Groot; Benjamin O. Anderson; Gabriel N. Hortobagyi
Abstract: We estimated the costs and health effects of treating stage I, II, III, and IV breast cancer individually, of treating all stages, and of introducing an extensive cancer control program (treating all stages plus early stage diagnosis) in three epidemiologically different world regions—Africa, North America, and Asia. We developed a mathematical simulation model of breast cancer using the stage distribution and case fatality rates in the presence and absence of treatment as predictors of survival. Outcome measures were life‐years adjusted for disability (DALYs), costs (in 2000 U.S. dollars) of treatment and follow‐up, and cost‐effectiveness ratios (CERs; in dollars per DALY averted). Sensitivity analyses were performed to determine the robustness of the results. Treating patients with stage I breast cancer resulted in 23.41, 12.25, and 19.25 DALYs averted per patient in Africa, North America, and Asia, respectively. The corresponding average CERs compared with no intervention were
European Journal of Haematology | 2005
Jeanette K. Doorduijn; I. Buijt; Bronno van der Holt; Monique Steijaert; Carin A. Uyl-de Groot; Pieter Sonneveld
78,
The Journal of Nuclear Medicine | 2010
Carin A. Uyl-de Groot; Asaf Senft; Remco de Bree; C. René Leemans; Otto S. Hoekstra
1960, and
Value in Health | 2012
Matthijs M. Versteegh; Annemieke Leunis; Carin A. Uyl-de Groot; Elly A. Stolk
62 per DALY averted. The number of DALYs averted per patient decreased with stage; the value was lowest for stage IV treatment (0.18–0.19), with average CERs of
Cancer | 2008
Leida M. Lamers; Roger Stupp; Martin van den Bent; Maiwenn Al; Thierry Gorlia; Jean-Blaise Wasserfallen; Nicole Mittmann; Soo Jin Seung; Ralph Crott; Carin A. Uyl-de Groot
4986 in Africa,
Medical Decision Making | 2012
Matthijs M. Versteegh; Annemieke Leunis; Jolanda J. Luime; Mike Boggild; Carin A. Uyl-de Groot; Elly A. Stolk
70,380 in North America, and
PharmacoEconomics | 2012
Mathilda L. Bongers; Veerle M.H. Coupé; Elise P. Jansma; Egbert F. Smit; Carin A. Uyl-de Groot
3510 per DALY averted in Asia. An extensive breast cancer program resulted in 16.14, 12.91, and 12.58 DALYs averted per patient and average CERs of
Haematologica | 2013
Wing H. Tong; Inge M. van der Sluis; Cathelijne J.M. Alleman; Raphaële R. L. van Litsenburg; Gertjan J. L. Kaspers; Rob Pieters; Carin A. Uyl-de Groot
75,