Research Article

[Retracted] Predictive Value of Serum Markers SFRP1 and CC16 in Acute Exacerbation of Chronic Obstructive Pulmonary Disease

Table 1

General clinical data of the study objects.

ItemsControl (n = 60)STCOPD (n = 65)AECOPD (n = 58) value

Age, years, mean (SD)65.46 ± 8.5363.13 ± 9.2867.53 ± 8.290.023
Gender, male, (n, %)49 (81.67)52 (80.00)51 (87.93)0.474
BMI, kg/m2, mean (SD)23.01 ± 2.2722.81 ± 1.9822.64 ± 2.110.638
History of smoking (n, %)0.002
 Yes21 (35.00)32 (49.23)35 (60.34)
 No39 (65.00)33 (50.77)23 (39.66)
COPD duration, years, mean (SD)NA8.81 ± 2.4110.23 ± 3.270.007
Lung function indexes, mean (SD)
FEV1 (% predicted)98.54 ± 5.0370.14 ± 11.3862.33 ± 13.26<0.001
FEV1/FVC (%)83.29 ± 3.0664.17 ± 5.3457.87 ± 6.14<0.001
CAT score, mean (SD)NA20.15 ± 3.5827.78 ± 4.23<0.001
Arterial blood gases, mean (SD)
PaO2 (mmHg)83.69 ± 4.4457.23 ± 6.3656.11 ± 7.03<0.001
PaCO2 (mmHg)38.26 ± 5.3143.09 ± 7.4844.63 ± 6.52<0.001

STCOPD, stable chronic obstructive pulmonary disease; AECOPD, acute exacerbation of chronic obstructive pulmonary disease; BMI, body mass index; FEV1, forced expiratory volume in the first second; FVC, forced vital capacity; CAT, the COPD assessment test.