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Table 1 Anthropometric, pulmonary function and CT metrics data of the 194 COPD subjects included in the study

From: Spirometric assessment of emphysema presence and severity as measured by quantitative CT and CT-based radiomics in COPD

Sex (M:F)

154:40

Age (yr)

70 (8.0)

BMI (kg/m2)

27 (4.6)

Smoking history (pack-years)

52 (27)

FEV1 (% pred)

63 (26)

FEV1/VC

48 (13)

FEV1/FVC

52 (13)

TLC (% pred)

108 (17)

DLco (% pred)

69 (24)

RV (% pred)

137 (47)

FRC (% pred)

130 (33)

RV/TLC

50 (14)

VIDA

%LAA-950insp

14 (12)

%LAA-856exp

45 (20)

Imbio LDA

%pLDA

12.2 (12.5)

%fLDA

37.1 (14.0)

% Normal

49.1 (21.1)

  1. Data are expressed as mean (SD). Legend: BMI body mass index, DLco diffusing lung capacity for carbon monoxide, FEV1% forced expiratory volume in 1 s, %fLDA percentage of functional low density area, FRC functional residual capacity, FVC forced vital capacity, %LAA-950insp percentage of lung attenuation area with values <− 950 Hounsfield Units at inspiratory CT scan, %LAA-856exp percentage of lung attenuation area with values <−856 Hounsfield Units at expiratory CT scan, % Normal percentage of normal lung, %pLDA percentage of persistent low density area, %pred percentage of predicted, RV residual volume, TLC total lung capacity, VC vital capacity