Search Results - "Schemper, M."

Statistical controversies in clinical research: the importance of importance by Gleiss, A., Zeillinger, R., Braicu, E.I., Trillsch, F., Vergote, I., Schemper, M.

“…We define the notion of ‘importance’ of prognostic factors in studies of survival and suggest quantifying it by the Schemper–Henderson measure of explained…”
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Parameters influencing FVIII pharmacokinetics in patients with severe and moderate haemophilia A by Kepa, S., Horvath, B., Reitter-Pfoertner, S., Schemper, M., Quehenberger, P., Grundbichler, M., Heistinger, M., Neumeister, P., Mannhalter, C., Pabinger, I.

“…Summary In haemophilia A patients factor VIII (FVIII) recovery and half‐life can vary substantially. There are parameters known to modulate FVIII…”
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The relative importance of prognostic factors in studies of survival by Schemper, M

“…The relative importance of prognostic factors in regression can be measured either by standardized regression coefficients or by percentages of explained…”
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The explained variation in proportional hazards regression by Schemper, M.

“…Two new measures of the proportion of the variation of possibly censored survival times explained by a given proportional hazards model are presented. It is…”
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Lack of impact of platinum dose intensity on the outcome of ovarian cancer patients: 10-year results of a prospective randomised phase III study comparing carboplatin–cisplatin with cyclophosphamide–cisplatin by Dittrich, Ch, Sevelda, P, Salzer, H, Obermair, A, Speiser, P, Breitenecker, G, Schemper, M, Kaider, A

“…This prospective multicentre phase III trial was conducted to assess whether increased platinum dose intensity (DI) by combining carboplatin with cisplatin has…”
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A meta‐analysis of low dose aspirin for the prevention of intrauterine growth retardation by Leitich, Harald, Egarter, Christian, Husslein, Peter, Kaider, Alexandra, Schemper, Michael

“…Objective To determine more precisely the effect of prophylactic low dose aspirin on intrauterine growth retardation and perinatal mortality. Design…”
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Alterations in nocturnal serum melatonin levels in humans with growth and aging by Waldhauser, F, Weiszenbacher, G, Tatzer, E, Gisinger, B, Waldhauser, M, Schemper, M, Frisch, H

“…The available data on potential alterations in serum melatonin (MLT) levels during a human lifetime are fragmentary and inconsistent. We, therefore, measured…”
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A note on quantifying follow-up in studies of failure time by Schemper, Michael, Smith, Terry L.

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Antibiotic treatment in preterm premature rupture of membranes and neonatal morbidity: A metaanalysis by Egarter, Christian, Leitich, Harald, Karas, Hermann, Wieser, Friedrich, Husslein, Peter, Kaider b, Alexandra, Schemper, Michael

“…OBJECTIVE: We performed a metaanalysis of seven published randomized clinical trials to estimate more precisely the effect of prophylactic antibiotics on…”
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Topical versus peribulbar anesthesia in clear corneal cataract surgery by Zehetmayer, M, Radax, U, Skorpik, C, Menapace, R, Schemper, M, Weghaupt, H, Scholz, U

“…To evaluate the efficacy of topical anesthesia as an alternative to peribulbar anesthesia in clear corneal cataract surgery. Department of Ophthalmology,…”
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Further results on the explained variation in proportional hazards regression by Schemper, M.

“…Summary Two competing measures of the proportion of variation of possibly censored survival times explained by a given proportional hazards model are compared…”
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A solution to the problem of separation in logistic regression by Heinze, Georg, Schemper, Michael

“…The phenomenon of separation or monotone likelihood is observed in the fitting process of a logistic model if the likelihood converges while at least one…”
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Skin tumors in photochemotherapy for psoriasis: a single-center follow-up of 496 patients by Maier, H, Schemper, M, Ortel, B, Binder, M, Tanew, A, Hönigsmann, H

“…The significance of oral psoralen photochemotherapy (PUVA) for the development of nonmelanoma skin cancers (NMSC) is still controversial. We evaluated 496…”
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Non-parametric analysis of treatment-covariate interaction in the presence of censoring by Schemper, M

“…The demonstration of varying treatment efficacy among different subsets of patients is an important part of the analysis of clinical trials. The paper…”
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Serum melatonin in central precocious puberty is lower than in age-matched prepubertal children by Waldhauser, F, Boepple, P A, Schemper, M, Mansfield, M J, Crowley, Jr, W F

“…In children a progressive decrease in nocturnal serum melatonin (MT) has been shown with advancing age, suggesting a reduction in the amplitude of the…”
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Predictive accuracy and explained variation by Schemper, Michael

“…Measures of the predictive accuracy of regression models quantify the extent to which covariates determine an individual outcome. Explained variation measures…”
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Outcome of watchful waiting in asymptomatic severe mitral regurgitation by ROSENHEK, Raphael, RADER, Florian, KLAAR, Ursula, GABRIEL, Harald, KREJC, Marcel, KALBECK, Daniel, SCHEMPER, Michael, MAURER, Gerald, BAUMGARTNER, Helmut

“…The management of asymptomatic severe mitral regurgitation remains controversial. The aim of this study was to evaluate the outcome of a watchful waiting…”
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Statins but not angiotensin-converting enzyme inhibitors delay progression of aortic stenosis by Rosenhek, Raphael, Rader, Florian, Loho, Nicole, Gabriel, Harald, Heger, Maria, Klaar, Ursula, Schemper, Michael, Binder, Thomas, Maurer, Gerald, Baumgartner, Helmut

“…Recently, statins and angiotensin-converting enzyme inhibitors (ACEIs) have been shown to slow aortic valve calcium accumulation. Although several studies also…”
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Mild and moderate aortic stenosis: Natural history and risk stratification by echocardiography by ROSENHEK, Raphael, KLAAR, Ursula, SCHEMPER, Michael, SCHOLTEN, Christine, HEGER, Maria, GABRIEL, Harald, BINDER, Thomas, MAURER, Gerald, BAUMGARTNER, Helmut

“…To define the natural history and predictors of outcome in mild and moderate aortic stenosis (AS). One hundred and seventy-six consecutive asymptomatic…”
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Role of a heart valve clinic programme in the management of patients with aortic stenosis by Zilberszac, Robert, Lancellotti, Patrizio, Gilon, Dan, Gabriel, Harald, Schemper, Michael, Maurer, Gerald, Massetti, Massimo, Rosenhek, Raphael

“…Aims We sought to assess the efficacy of a heart valve clinic (HVC) follow-up programme for patients with severe aortic stenosis (AS). Methods and results…”
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