Pulmonary Embolism in Pneumonia: Still a Diagnostic Challenge? Results of a Case-Control Study in 100 Patients

Table 5

Studied covariates along with their levels and the coded values used in the models.

Covariate	Levels	Coded value
Chest pain	No	0
	Yes	1
Consolidation	No	0
	Yes	1
Fever	No	0
	Yes	1
Other symptoms	No other symptoms	0
	Dyspnea	1
	Dyspnea and cough	2
	Hemoptysis	3
	Syncope	4

The levels coded with zero are the reference levels to be compared with the rest of the levels in the model.