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. 2025 Jul 29;17(7):4681–4688. doi: 10.21037/jtd-24-1821

Table 2. Correlation analysis between risk stratification and various parameters.

Variables Risk stratification of APE P
Dyspnea 0.202 0.002
Syncope 0.173 0.03
Fever −0.149 0.009
P/F ratio −0.417 <0.001
PaCO2 −0.260 <0.001
SpO2/FiO2 −0.404 0.002

APE, acute pulmonary embolism; P/F, partial oxygen pressure/fraction of inspired oxygen; PaCO2, partial pressure of carbon dioxide; SpO2/FiO2, pulse oxygen saturation/fraction of inspired oxygen.