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Table 1 General characteristics of Luoyang and Zhengzhou Cohort

From: Diagnostic accuracy of thoracic CT to differentiate transudative from exudative pleural effusion prior to thoracentesis

Characteristics

Luoyang Cohort

(Derivation Cohort)

Zhengzhou Cohort

(Validation Cohort)

transudates

exudates

p value

transudates

exudates

p value

Number

45

164

NA

32

163

NA

Sex

(F/M)

16/29

52/102

0.859

17/15

44/119

0.006

Age

(y)

67.50

(32.00–77.00)

57.00

(14.00–70.00)

0.012

65.50

(53.25–74.75)

65.00

(55.00–72.00)

0.697

Protein

(g/L)

19.45 ± 5.88

41.04 ± 10.04

< 0.001

20.56 ± 6.95

42.08 ± 10.01

< 0.001

LDH

(U/L)

76.00

(67.50–100.00)

292.50

(168.80-535.50)

< 0.001

112.50

(82.00-132.00)

320.50

(179.00-533.30)

< 0.001

Glucose

(mmol/L)

7.56

(6.41–9.55)

6.60

(5.19–7.91)

< 0.001

7.30

(5.46–9.44)

6.45

(5.29–8.16)

0.063

  1. Data are presented as mean ± SD or median (interquartile range). LDH, lactate dehydrogenase; NA, not applicable