Prevalence, risk factors, and clinical characteristics of pulmonary embolism in patients with acute exacerbation of COPD in Plateau regions: a prospective cohort study

Table 3 Related factors of pulmonary embolism in patients with AE-COPD based on multivariable logistic regression

Variables	OR	95%CI	P-value
Nationality (Han vs. minority)	0.566	0.363, 0.883	0.012
Neutrophil count (per 1 × 10⁹)	1.112	1.037, 1.191	0.003
D-dimer (> 1 mg/L vs. ≤1 mg/L)	1.725	1.108, 2.686	0.016
AST (> 40 U/L vs. ≤40 U/L)	2.310	1.384, 3.856	0.001
Chest pain (with vs. without)	2.121	1.229, 3.662	0.007
Hypertension (with vs. without)	0.675	0.438, 1.039	0.074
Cardiac insufficiency or respiratory failure (with vs. without)	7.451	4.691, 11.833	< 0.001
Stroke within 3 months (with vs. without)	1.983	0.672, 5.856	0.215
Padua score (≥ 4 vs. 0–3)	3.542	2.247, 5.583	< 0.001
DVT (with vs. without)	11.067	3.809, 32.156	< 0.001
Lower limb pain (with vs. without)	1.935	0.447, 7.849	0.356

The C-statistic of this model was 0.84
Abbreviation: AECOPD: Acute Exacerbation of Chronic Obstructive Pulmonary Disease; AST: Aspartate Aminotransferase; DVT: Deep Vein Thrombosis

ISSN: 1471-2466