Statistical Analysis
Standard statistical analysis was performed using IBM SPSS® Statistics
for Windows. Descriptive statistics were used to characterize the
sample. We tested the possible associated differences between
inpatients/outpatients and demographic characteristics, risk factors,
severity and outcomes. Furthermore, we also tested possible associations
between PE severity classification and demographic variables, clinical
presentation (with or without syncope, tachycardia, hypoxemia), d-dimers
levels, management (anticoagulation vs need for thrombectomy,
thrombolysis or hemodynamic support), and outcomes, as described. χ2
-square test was used to assess these associations, considering
significance for p-value <0.05.