Corresponding author information: Sleep Unit, Department of Pulmonary Medicine, Hospital Clínic de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain, Villarroel, 170, 08036 Barcelona, Spain
The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
© Clarivate Analytics, Journal Citation Reports 2025
SRJ is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and qualitative measure of the journal's impact.
See moreSNIP measures contextual citation impact by wighting citations based on the total number of citations in a subject field.
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