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Dive into the research topics where John Paul Vader is active.

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Featured researches published by John Paul Vader.


Spine | 1997

Appropriateness of Indications for Surgery of Lumbar Disc Hernia and Spinal Stenosis

Tania Larequi-Lauber; John Paul Vader; Bernard Burnand; Robert H. Brook; Jacqueline Kosecoff; Dorith Sloutskis; Heinz Fankhauser; Jean Berney; Nicolas de Tribolet; Fred Paccaud

Study Design This prospective study examines the appropriateness of indications for surgery of herniated intervertebral disc and spinal stenosis in patients undergoing surgery in a university hospital setting. Objective To evaluate the appropriateness of surgery using explicit criteria developed by an expert panel in the United States. Summary of Background Data The use of surgery for herniated intervertebral disc and spinal stenosis varies widely within and among countries. It has been postulated that the main reason for treatment failure is poor selection of condidates for the procedure. Methods The authors prospectively evaluated appropriateness of surgical indications for herniated lumbar intervertebral disc or spinal stenosis in 328 consecutive patients undergoing the operation in two university neurosurgery departments. Outcome was measured 1 year after surgery by a standardized interview. Results Indications for surgery were considered to be appropriate or equivocal in 202 (62%) patients and inappropriate in 126 (38%). Among the 126 inappropriate procedures, 66 were so rated because of insufficient activity restriction before the procedure. One year after surgery, 74% of the patients perceived the results of the operation as good or very good. Conclusions Appropriateness as measured by the criteria established by the American panel identified a large percentage of day-to-day practice in the two surgical units as inappropriate. However, use of criteria that include new findings about lack of efficacy of bed rest probably would lower this percentage. Criteria of appropriateness of medical and surgical procedures, developed through the panel process, need to be updated regularly.


Presse Medicale | 2004

Évaluer la spécificité d'un centre hospitalo-universitaire : Exemple du recours à la colonoscopie (enquête EPAGE)

R. Letonturier; Juliette Debourse; Fabrice Thiolliere; Rémi Combes; John Paul Vader; Bernard Burnand; Gilles Bommelaer; L. Gerbaud

Resume Objectif La specificite d’un hopital universitaire est le plus souvent abordee sous l’angle de la charge d’enseignement et de recherche. L’enquete EPAGE, outil d’aide a la decision accessible sur Internet, nous a permis de comparer le recours a un acte courant, la colonoscopie, au CHU de Clermont-Ferrand et au CH de Moulins. L’objectif a ete de mettre en evidence des differences de pratique de soins entre ces 2 centres proches geographiquement, qui traduiraient une specificite hospitalo-universitaire non prise en compte dans le mode de financement de l’hopital. Methode Les donnees sont tirees de l’etude EPAGE, etude multicentrique prospective associant 21 centres euro-canadiens. Le recueil des donnees au CHU de Clermont-Ferrand s’est fait sur 2 periodes : de decembre 2000 a mars 2001, puis de decembre 2001 a fevrier 2002, et au CH de Moulins de decembre 2000 a fin novembre 2001. Pour cet article, seuls les caracteristiques des patients, les indications de colonoscopie et le taux d’opportunite ont ete analyses. Une comparaison des categories de patients des 2 centres a ete realisee en fonction de leur classe GHM (groupe homogene de malades) permettant ainsi de calculer la moyenne de points ISA (indice synthetique d’activite) des 2 centres. Resultats 221 cas de colonoscopies pratiquees au CHU et 292 au CH ont ete inclus dans l’etude. Aucune difference statistiquement significative n’est trouvee pour les motifs de recours a la colonoscopie, en ce qui concerne les indications cotees par le site EPAGE. Les indications non repertoriees sont de 18 % au CHU contre 4,8 % au CH (p Discussion - Conclusion La difference de motifs de recours a la colonoscopie trouvee entre les 2 centres releve de situations rares, complexes ou tres innovantes. Ceci illustre le role de centre de reference regional d’un CHU, aspect specifique fortement sous-estime par la mesure du case-mix, a partir des GHM. Il reste a etudier quels systemes de financement et/ou d’information pourraient remedier a l’apparente sous-estimation actuelle du mode de financement.


European Radiology | 2008

CT radiation dose in children: a survey to establish age-based diagnostic reference levels in Switzerland

Francis R. Verdun; Daniel Gutierrez; John Paul Vader; Abbas Aroua; Leonor Trinidad Alamo-Maestre; François Bochud; François Gudinchet


Endoscopy | 1996

Appropriateness and Diagnostic Yield of Upper Gastrointestinal Endoscopy in an Open-Access Endoscopy Unit

Jean-Jacques Gonvers; Bernard Burnand; Florian Froehlich; Isabelle Pache; Joël Thorens; Michael W. Fried; Jacqueline Kosecoff; John Paul Vader; Robert H. Brook


Gastrointestinal Endoscopy | 2000

Is the diagnostic yield of upper GI endoscopy improved by the use of explicit panel-based appropriateness criteria?☆☆☆★

Florian Froehlich; Claude Repond; Beat Müllhaupt; John Paul Vader; Bernard Burnand; Catherine Schneider; Isabelle Pache; Joël Thorens; Jean-Pierre Rey; Vanessa DeBosset; Vincent Wietlisbach; Michael Fried; Robert W. Dubois; Robert H. Brook; Jean-Jacques Gonvers


Gastroenterology | 1997

Underutilization of upper gastrointestinal endoscopy

Florian Froehlich; Isabelle Pache; Bernard Burnand; John Paul Vader; Michael Fried; Jacqueline Kosecoff; Marvin Kolodny; Robert W. Dubois; Robert H. Brook; Jean-Jacques Gonvers


Gastrointestinal Endoscopy | 2000

Overuse and underuse of colonoscopy in a European primary care setting.

John Paul Vader; Isabelle Pache; Florian Froehlich; Bernard Burnand; Catherine Schneider; Robert W. Dubois; Robert H. Brook; Jean-Jacques Gonvers


Archive | 1997

Overuse of Upper Gastrointestinal Endoscopy in a Country with Open-Access Endoscopy

Florian Froehlich; Bernard Burnand; Isabelle Pache; John Paul Vader; Michael Fried; Catherine Schneider; Jacqueline Kosecoff; Marvin Kolodny; Robert W. Dubois; Robert H. Brook; Jean-Jacques Gonvers


Archive | 1997

Appropriateness of Upper Gastrointestinal Endoscopy

John Paul Vader; Bernard Burnand; Florian Froehlich; Karine Dupriez; Tania Larequi-Lauber; Isabelle Pache; Robert W. Dubois; Jean-Jacques Gonvers; Robert H. Brook


Archive | 1992

Assessing AIDS prevention : selected papers presented at the international conference held in Montreux (Switzerland), October 29-November 1, 1990

Fred Paccaud; John Paul Vader; Felix Gutzwiller

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Robert H. Brook

George Washington University

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