Pulmonary arterial enlargement predicts cardiopulmonary complications after pulmonary resection for lung cancer: a retrospective cohort study

Table 3 Multivariate analysis of patient characteristics possibly contributing to postoperative cardiopulmonary complications

Variable	Category	Odds ratio	95 % CI	P value
PA/A ratio	Lowest	REF	1.5–3.5	0.0002
PA/A ratio	0.1-point increase	2.3	1.5–3.5	0.0002
Age (years)	Lowest	REF	1.1–1.3	0.03
Age (years)	1-year increase	1.2	1.1–1.3	0.03
Cardiopulmonary comorbidity	-	REF	0.7–11.6	0.2
Cardiopulmonary comorbidity	+	2.5	0.7–11.6	0.2

CI confidence interval, PA/A ratio pulmonary-artery-to-aorta ratio, REF reference parameter

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