Statistical analysis The concordant and non-concordant identifica

Statistical analysis The concordant and non-concordant identification results were compared two by two using the paired and non-parametric McNemar’s test. The results of the quantitative variable

LS analysis were compared using the non-parametric rank sum test of the Kruskall-Wallis test. When the results of the Kruskall-Wallis test #AZD6738 datasheet randurls[1|1|,|CHEM1|]# indicated a statistical difference between the LS values derived from the different mass spectral libraries, a post hoc statistical analysis was performed, which involved a pairwise comparison of the LS values obtained from each library using the Wilcoxon signed-rank test with Bonferroni adjustment. These analyses were performed using R software (http://​www.​r-project.​org/​) with the MASS and ROCR packages. To further examine the influence of library architecture on the probability of obtaining a correct identification, a multivariate analysis was conducted with the Genmod procedure of the SAS 9.2 (Cary, NC, USA) statistical

software using the generalized estimating equations option to account for the non-independence of identification selleck chemicals llc results obtained from the same isolate tested against distinct libraries. These analyses were performed to identify the optimal reference library architecture; therefore, the results obtained with isolates for which the species was not included in the library were excluded from this multivariate analysis. All statistical tests were two-sided with a p≤ 0.05 significance level. Availability of supporting data These data are included in Table 6 entitled “Details of the 90 reference strains included in the reference libraries”. Acknowledgements We thank the Pasteur Institute of Paris, France and the BCCM/IHEM public collection of Brussels, Belgium for kindly providing the reference strains. We also thank Sandra Moore for correcting the manuscript. References Ixazomib in vivo 1. Balajee SA, Nickle D, Varga J, Marr KA: Molecular studies reveal frequent misidentification of Aspergillus

fumigatus by morphotyping. Eukaryotic Cell 2006, 5:1705–1712.PubMedCrossRef 2. Samson RA, Hong S, Peterson SW, Frisvad JC, Varga J: Polyphasic taxonomy of Aspergillus section Fumigati and its teleomorph Neosartorya. Stud. Mycol. 2007, 59:147–203.PubMedCrossRef 3. Baker SE: Aspergillus niger genomics: past, present and into the future. Med. Mycol 2006,44(1):17–21.CrossRef 4. Bennett JW, In Aspergillus: Molecular Biology and Genomics: An Overview of the Genus Aspergillus. Caister Academic Press: edited by Machida M, Gomi K; 2010:1–17. 5. Alexander BD: Diagnosis of fungal infection: new technologies for the mycology laboratory. Transpl Infect Dis 2002,4(Suppl 3):32–37.PubMedCrossRef 6. Lau A, Chen S, Sleiman S, Sorrell T: Current status and future perspectives on molecular and serological methods in diagnostic mycology. Future Microbiology 2009, 4:1185–1222.PubMedCrossRef 7. Croxatto A, Prod’hom G, Greub G: Applications of MALDI-TOF mass spectrometry in clinical diagnostic microbiology. FEMS Microbiol. Rev.

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