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Table 1 Study population characteristics

From: Computer quantification of airway collapse on forced expiration to predict the presence of emphysema

 

No emphysema

Emphysema

Patients, n

223

251

COPD, absent/present

124/99

14/237

Sex, M/F

178/45

192/59

Age, years

62 (58 - 67)

65 (59 - 74)

Smoking, pack yr.

40 (30 - 53)

48 (34 - 62)

BMI, kg/m2

27 (±4)

24 (±5)

FEV1, %predicted

91 (±25)

52 (±26)

FVC, %predicted

103 (±20)

88 (±24)

FEV1/FVC

0.68 (±0.11)

0.45 (±0.14)

KCO, %predicted

96 (±17)

69 (±21)

DL,CO, %predicted

82 (±17)

50 (±19)

Emphysema scores, %

0

32 (7 - 57)

  1. Definition of abbreviations: BMI Body mass index, COPD Chronic obstructive pulmonary disease, DL,CO Carbon monoxide diffusing capacity, F Female, FEV1 Forced expiratory volume in one second, FVC Forced vital capacity, KCO Carbon monoxide transfer coefficient, M Male, Values are means ± SD; Emphysema score, age and smoking values are median and IQR.