Table 5.

Patient delay: univariate analysis

Variable	Late presentation ≥6 days
	Odds ratio	95% CI	P-value
Age >65 years	1.06	0.57 to 2.00	0.85
Male sex	1.23	0.66 to 2.30	0.52
Comorbidity	1.34	0.69 to 2.58	0.39
Symptoms
Dyspnoea	3.74	1.28 to 10.88	0.02a
Chest pain	0.45	0.24 to 0.85	0.01a
Cough	1.71	0.89 to 3.28	0.11a
Haemoptysisb	–	–	–
Fever	0.46	0.16 to 1.37	0.16a
Calf pain	0.64	0.30 to 1.37	0.25
Signs
Tachycardiac	1.02	0.51 to 2.04	0.96
Signs of DVT	0.68	0.31 to 1.51	0.35
Risk factors
Previous DVT/PE	1.64	0.78 to 2.33	0.19a
Known malignancy	0.92	0.33 to 2.54	0.87
Surgery or traumad	0.65	0.22 to 2.20	0.45
Thrombophiliab	–	–	–

^aP≤0.20, therefore data included in multivariate logistic regression analysis.

^bNo analysis due to lack of data.

^cTachycardia defined as heart rate >100 beats per minute.

^dSurgery or trauma in the previous 4 weeks. DVT = deep venous thrombosis. PE = pulmonary embolism.