Table 3.

Total diagnostic delay: univariate analysis

Variable	Late diagnosis ≥7 days

	Odds ratio	95% CI	P-value
Age >65 years	1.28	0.74 to 2.24	0.38
Male sex	1.04	0.60 to 1.80	0.90
Comorbidity	1.78	1.00 to 3.19	0.05^a

Symptoms
Dyspnoea	2.62	1.17 to 5.87	0.02^a
Chest pain	0.46	0.26 to 0.80	0.01^a
Cough	1.54	0.86 to 2.76	0.15^a
Haemoptysis^b	––	–
Fever	0.83	0.37 to 1.85	0.65
Calf pain	0.53	0.27 to 1.05	0.07^a

Signs
Tachycardia^c	0.76	0.41 to 1.43	0.40
Rales	0.67	0.30 to 1.47	0.31
Decreased breath sounds	0.49	0.16 to 2.34	0.20^a
Signs of DVT	0.68	0.34 to 1.35	0.27

Risk factors
Previous DVT/PE	1.07	0.53 to 4.37	0.86
Known malignancy	0.72	0.28 to 1.84	0.49
Surgery or trauma^d	0.53	0.20 to 1.45	0.22
Thrombophilia^b	––	–

↵a P≤0.20, therefore data included in multivariate logistic regression analysis (see Table 4).
↵b No analysis due to lack of data.
↵c Tachycardia defined as heart rate >100 beats per minute.
↵d Surgery or trauma in the previous 4 weeks. DVT = deep venous thrombosis. PE = pulmonary embolism.