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. 2018 Oct 19;17(6):e12837. doi: 10.1111/acel.12837

Table 1.

Patient characteristics

Smokers (S‐C) COPD smokers p value
Patients (n) 13 14
Age (years) 57 (48–67) 60 (51–74) ns
Sex (M/F) 6/7 7/7
FEV1/VC 81 (72/107) 61 (42/69)*** <0.001
FEV1 (%) 89 (76–113) 73 (50–113)** <0.001
GOLD (n)
0/I/II/III/IV
13/0/0/0/0 0/4/10/0/0
Smoking history (pack‐yrs) 43 (30–60) 46 (20–75) ns
Emphysema score (%) 12.9 ± 3.5 45.3 ± 4.6** <0.001

COPD: chronic obstructive pulmonary disease; GOLD: Global Initiative for Chronic Obstructive Lung Disease; VC: vital capacity; FEV1, forced expiratory volume in 1 s.

Emphysema score was assessed on 0%–100% scale.

Data are expressed as median with minimum and maximum quartiles (in parentheses), except for emphysema score, which is expressed as mean ± SEM.

**p < 0.01.

***p < 0.001 COPD patients vs. smokers.