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See detailDo utility values and willingness to pay suitably reflect health outcome in hip and knee osteoarthritis? A comparative analysis with the WOMAC index
Ethgen, Olivier ULg; Tancredi, Annalisa ULg; Lejeune, Emmanuelle ULg et al

in Journal of Rheumatology (2003), 30(11), 2452-2459

Objective. To establish whether health utility (time trade-off, TTO) and willingness to pay (WTP) values reflect clinical health outcome as evaluated by the Western Ontario McMaster Universities ... [more ▼]

Objective. To establish whether health utility (time trade-off, TTO) and willingness to pay (WTP) values reflect clinical health outcome as evaluated by the Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) in hip and knee osteoarthritis (OA). Methods. One hundred twenty-eight patients with OA attending a specialized arthritis clinic were interviewed about their socioeconomic characteristics and administered the TTO technique and the WOMAC. Their WTP for 2 hypothetical anti-osteoarthritic drugs was also investigated: the first drug was said to provide a significant improvement in WOMAC dimensions and the second a complete cure of the disease. WTP was elicited by both discrete-choice and bidding game methods. Results. Answer rates were 89.1% for TTO, 98.4% for discrete-choice WTP for both scenarios, and 89.8% and 85.2% for bidding game WTP in the relief and the cure scenario, respectively. The mean TTO utility value was 0.84 (standard deviation 0.20). In discrete-choice, those accepting the bid had higher monthly income (euro 1536.5 vs euro 1060. 1, p < 0.001, for the relief scenario and euro 1449.3 vs euro 1071.6, p < 0.001, for the cure scenario). With the bidding game format, WTP was positively correlated with income in both scenarios (r = 0.56, r = 0.55, p < 0.001). WTP measures differed equally between education and socioeconomic groups with those in favored groups consistently reporting higher WTP (Kruskal-Wallis tests statistics ranging from p < 0.01 to p < 0.001). Except for stiffness, WOMAC dimensions were correlated in the expected direction with TTO values (r = -0.27, p < 0.01 for pain and r = -0.36, r = -0.34, p < 0.001 for physical function and total score, respectively). Conclusion. Whereas they showed good feasibility, WTP measures poorly reflected clinical condition and were mainly related to economic status and ability to pay. TTO was correlated with the WOMAC dimensions and may be considered closer to clinical situations than WTP. However, concern arises regarding the homogeneity of the study sample in terms of clinical severity, which may have precluded the identification of a relationship between WTP and clinical status. [less ▲]

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See detailLe livre de l'ânesse de Balaam, de David Jones, Traduction, notes et introduction critique
Pagnoulle, Christine ULg; Pagnoulle, Christine ULg

Book published by Editions associatives Clapas (2003)

The poetic sequence called 'The book of Balaam's Ass' was only published after David Jones's death. It is indeed riddled with contradictions and inconsistencies, but of the kind that can hardly be ... [more ▼]

The poetic sequence called 'The book of Balaam's Ass' was only published after David Jones's death. It is indeed riddled with contradictions and inconsistencies, but of the kind that can hardly be overcome. In a nutshell it is about the loss of grace, both in the later stage of the Great War (from the Somme offensive onwards) and in a postwar world in which the author feels all sense of the holy has been erased. [less ▲]

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See detailAvances en diagnostico y tratamiento de acromegalia
Beckers, Albert ULg

Scientific conference (2003, November)

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See detailAnomalies métaboliques chez l'acromégale
Beckers, Albert ULg

Scientific conference (2003, November)

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See detailAcromegalia y prolactinomas en embaraza
Beckers, Albert ULg

Scientific conference (2003, November)

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See detailSolution structural study of BlaI: Implications for the repression of genes involved in beta-lactam antibiotic resistance
Van Melckebeke, H.; Vreuls, Christelle ULg; Gans, P. et al

in Journal of Molecular Biology (2003), 333(4), 711-720

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See detailLe politique, victime de la mondialisation ?
Geuens, Geoffrey ULg

Conference given outside the academic context (2003)

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See detailCrèmes laitières reconstituées
Danthine, Sabine ULg; Blecker, Christophe ULg; Paquot, Michel ULg et al

Patent (2003)

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See detailLeft ventricular preload-adjusted maximal power: Clinically useful marker of LV contractility ?
Segers, P.; Tchana-Sato, Vincent ULg; Leather, H. A. et al

in Circulation (2003, October 28), 108(17, Suppl. S), 396-396

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See detailImplementing the Bianco and Yohai estimator for logistic regression
Croux, C.; Haesbroeck, Gentiane ULg

in Computational Statistics & Data Analysis (2003), 44(1-2), 273-295

A fast and stable algorithm to compute a highly robust estimator for the logistic regression model is proposed. A criterium. for the existence of this estimator at finite samples is derived and the ... [more ▼]

A fast and stable algorithm to compute a highly robust estimator for the logistic regression model is proposed. A criterium. for the existence of this estimator at finite samples is derived and the problem of the selection of an appropriate loss function is discussed. It is shown that the loss function can be chosen such that the robust estimator exists if and only if the maximum likelihood estimator exists. The advantages of using a weighted version of this estimator are also considered. Simulations and an example give further support for the good performance of the implemented estimators. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailLes auteurs grecs et latins face aux écritures égyptiennes
Winand, Jean ULg

Scientific conference (2003, October 26)

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See detailDesign and evaluation of new hydrogels for biomaterial purposes
Grandfils, Christian ULg; Barakat, I; Fairon, N et al

Conference (2003, October 23)

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See detailA regulatory mutation in IGF2 causes a major QTL effect on muscle growth in the pig
Van Laere, Anne-Sophie ULg; Nguyen, Minh Ngoc ULg; Braunschweig, M. et al

in Nature (2003), 425(6960), 832-836

Most traits and disorders have a multifactorial background indicating that they are controlled by environmental factors as well as an unknown number of quantitative trait loci (QTLs)(1,2). The ... [more ▼]

Most traits and disorders have a multifactorial background indicating that they are controlled by environmental factors as well as an unknown number of quantitative trait loci (QTLs)(1,2). The identification of mutations underlying QTLs is a challenge because each locus explains only a fraction of the phenotypic variation(3,4). A paternally expressed QTL affecting muscle growth, fat deposition and size of the heart in pigs maps to the IGF2 (insulin-like growth factor 2) region(5,6). Here we show that this QTL is caused by a nucleotide substitution in intron 3 of IGF2. The mutation occurs in an evolutionarily conserved CpG island that is hypomethylated in skeletal muscle. The mutation abrogates in vitro interaction with a nuclear factor, probably a repressor, and pigs inheriting the mutation from their sire have a threefold increase in IGF2 messenger RNA expression in postnatal muscle. Our study establishes a causal relationship between a single-base-pair substitution in a non-coding region and a QTL effect. The result supports the long-held view that regulatory mutations are important for controlling phenotypic variation(7). [less ▲]

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See detailStudy of the interaction of polycations with human red blood cells
Grandfils, Christian ULg; Barakat, I; Verraes, S et al

Conference (2003, October 23)

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See detailDesign and evaluation of new reinforced hydrogel membranes for biomaterial purposes
Fairon, N; Grandfils, Christian ULg; Barakat, I et al

Poster (2003, October 23)

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See detailCWATUP : les arrêtés d'exécution du 17 juillet 2003
Delnoy, Michel ULg

in Immobilier (2003), 19

Detailed reference viewed: 20 (4 ULg)