Table 7.

Delay in secondary care: univariate analysis

Variable	Late diagnosis ≥3 days

	Odds ratio	95% CI	P-value
Age >65 years	0.84	0.33 to 2.13	0.71
Male sex	0.68	0.27 to 1.71	0.41
Comorbidity	1.28	0.49 to 3.33	0.61

Symptoms
Dyspnoea	0.31	0.12 to 0.78	0.01^a
Chest pain	0.66	0.27 to 1.64	0.37
Cough	0.83	0.34 to 2.49	0.88
Haemoptysis	1.65	0.20 to 13.90	0.64
Fever	1.88	0.65 to 5.47	0.25
Calf pain	0.43	0.12 to 1.50	0.18^a

Signs
Tachycardia^c	1.02	0.38 to 2.76	0.97
Rales	0.84	0.24 to 3.00	0.79
Decreased breath sounds	0.50	0.06 to 2.14	0.50
Signs of DVT	1.04	0.36 to 2.97	0.95

Risk factors
Previous DVT/PE	0.22	0.03 to 2.03	0.15^a
Known malignancy	0.89	0.20 to 4.01	0.87
Surgery or trauma^d	0.85	0.19 to 3.86	0.84
Thrombophilia^b	–	–	–

↵a P≤0.20, therefore data included in multivariate logistic regression analysis.
↵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.