Langs, Kerstin

[["dc.bibliographiccitation.firstpage","1090"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Computational Statistics & Data Analysis"],["dc.bibliographiccitation.lastpage","1102"],["dc.bibliographiccitation.volume","56"],["dc.contributor.author","Konietschke, Frank"],["dc.contributor.author","Harrar, S. W."],["dc.contributor.author","Lange, K."],["dc.contributor.author","Brunner, E."],["dc.date.accessioned","2018-11-07T09:11:01Z"],["dc.date.available","2018-11-07T09:11:01Z"],["dc.date.issued","2012"],["dc.description.abstract","Nonparametric methods for matched pairs with data missing completely at random are considered. It is not assumed that the observations are coming from distribution functions belonging to a certain parametric or semi-parametric family. In particular, the distributions can have different shapes under the null hypothesis. Hence, the so-called nonparametric Behrens-Fisher problem for matched pairs with missing data is considered. Moreover, a new approach for confidence intervals for nonparametric effects is presented. In particular, no restriction on the ratio of the number of complete and incomplete cases is required to derive the asymptotic results. Simulations show that for arbitrary settings of complete data and missing values, the resulting confidence intervals maintain the pre-assigned coverage probability quite accurately. Regarding the power, none of the proposed tests is uniformly superior to the other. A real data set illustrates the application. (C) 2011 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","German Research Foundation [Br-655/16-1]"],["dc.identifier.doi","10.1016/j.csda.2011.03.022"],["dc.identifier.isi","000301688100010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26628"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0167-9473"],["dc.title","Ranking procedures for matched pairs with missing data - Asymptotic theory and a small sample approximation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","581"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","International Endodontic Journal"],["dc.bibliographiccitation.lastpage","589"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Roedig, Tina"],["dc.contributor.author","Sedghi, M."],["dc.contributor.author","Konietschke, Frank"],["dc.contributor.author","Lange, K."],["dc.contributor.author","Ziebolz, Dirk"],["dc.contributor.author","Huelsmann, Micbael"],["dc.date.accessioned","2018-11-07T08:41:44Z"],["dc.date.available","2018-11-07T08:41:44Z"],["dc.date.issued","2010"],["dc.description.abstract","P>Aim To compare of the efficacy of syringe irrigation, RinsEndo (R) (Durr Dental, Bietigheim, Germany) and passive ultrasonic irrigation (PUI) in the removal of dentinal debris from simulated irregularities in root canals with different apical sizes. Methodology Thirty extracted human pre-molars were randomly divided into three groups (n = 10) followed by root canal preparation with rotary FlexMaster (R) NiTi instruments (VDW, Munich, Germany) to size 30, 0.02 taper (group 1), size 40, 0.02 taper (group 2) or size 50, 0.02 taper (group 3). The teeth were split longitudinally, and a standard groove and three hemispherical-shaped cavities were cut into the root canal halves. Grooves and cavities were filled with dentinal debris before each irrigation procedure and the root halves were reassembled. In all groups three different irrigation procedures were performed with 30 mL NaOCl (1%) and (i) syringe, (ii) RinsEndo (R) and (iii) PUI. The amount of remaining debris was evaluated under a microscope with 30x magnification and a four score system. The data were analysed with a non-parametric analysis of covariance and multiple comparisons using the Tukey adjustment (P = 0.05). Results Passive ultrasonic irrigation removed debris significantly better from the artificial canal irregularities than RinsEndo (R) and syringe irrigation irrespective of the root canal diameter. Only in group 1 (30, 0.02 taper) the difference between PUI and RinsEndo (R) was not statistically significant (P = 0.99). RinsEndo (R) demonstrated significantly better results than syringe irrigation in all groups (P < 0.001). Conclusions Ultrasonic irrigation is more effective than syringe irrigation or RinsEndo (R) in removing debris from artificial extensions in straight root canals."],["dc.identifier.doi","10.1111/j.1365-2591.2010.01721.x"],["dc.identifier.isi","000278566500006"],["dc.identifier.pmid","20636517"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19533"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","0143-2885"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.title","Efficacy of syringe irrigation, RinsEndo (R) and passive ultrasonic irrigation in removing debris from irregularities in root canals with different apical sizes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]