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Figure 1 CONSORT Diagram of Patient Selection
The CONSORT diagram of the patient selection process is illustrated in this figure. The definition of an intramural hematoma (IMH) is the absence of an intimal dissection or false lumen flow with the presence of a circular or crescent-shaped hematoma larger than 5 mm in the aortic wall. Eligible uncomplicated type B IMH patients who refused further medical treatments and those without complete imaging records, laboratory test results and follow-up data were considered as missing data We used the method of complete-case analysis in which we discarded these missing data with incomplete information.