Search for: [Abstract = "asculitides \(AAV\) patients’ cohort. Moreover, the particular subgroups have been characterised – the patients with respiratory involvement and the group which needed stay at intensive care unit \(ICU\). Materials and methods The data from retrospective branch of POLVAS registry have been used in this study. POLVAS is to date the largest ever created database, encompassing Polish population of AAV. Six hundred and twenty\-five cases \(417 with GPA, 106 with MPA and 102 with EGPA\), with the diagnoses established between 1990 and 2016 years, were qualified for the assessment of the treatment and treatment\-associated side effects. The data were obtained using retrospective questionnaires. The diagnoses of the particular entities were based on the American College of Rheumatology \(ACR\) criteria and 2012 Revised International Chapel Hill Consensus criteria. Three hundred and sixteen cases with radiological confirmation of AAV presence were selected for the analysis of the subgroup with respiratory involvement. Thirty cases from POLVAS database were included in the subgroup of AAV patients, who needed ICU stay and were analysed in the further part of the study. Standard descriptive statistics and statistic tools made for performing comparisons between groups were used. P\-value <0.05 was assumed as statistically significant \(modified with Bonferroni correction when multipl"]

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