Diagnosis of Parapneumonia Pleural Effusion with Serum and Pleural Fluid Cell-Free DNA

Table 1

Baseline characteristics of parapneumonic and non-parapneumonic pleural effusion patients.

	Non-parapneumonic effusion	Parapneumonic effusion	P value
	n=16	n=22
Gender(male)(n (%))	12(75%)	15(68%)	0.73
Age (years old)	61(51, 75)	57(51, 63)	0.29
Major comorbidity
Congestive heart failure (n (%))	3(19%)	0(0%)	0.07
Diabetes mellitus (n (%))	2(13%)	9(41%)	0.08
Hypertension (n (%))	5(31%)	8(36%)	1.00
Cerebrovascular disease (n (%))	0(0%)	3(14%)	0.23
Cancer (n (%))	7(44%)	5(23%)	0.29
Liver cirrhosis (n (%))	6(38%)	2(9%)	0.05
COPD (n (%))	1(6%)	2(9%)	1.00
Clinical presentation
Fever episode (n (%))	3(19%)	13(59%)
Systolic blood pressure (mmHg)	173(113, 197)	153(129, 188)	0.67
Diastolic blood pressure(mmHg)	94(82, 111)	88(78, 102)	0.28
Pulse rate (times/minute)	96(74, 123)	115(103, 127)	0.10
Respiratory rate (times/minute)	19(18, 22)	20(18, 20)	0.95
Days of admission(days)	14(13, 17)	20(15, 31)	0.10
In hospital mortality (n (%))	2(13%)	3(14%)	1.00

COPD, chronic obstructive pulmonary disease.
Data was expressed as median (interquartile range Q1, Q3).
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