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

Table 2

Comparison of serum indexes in each group.

Parameters, mean (SD)	Control	STCOPD	AECOPD
SFRP1, pg/mL	58.85 ± 4.91	112.02 ± 19.46^a	142.15 ± 20.13^a,b
CC16, pg/mL	99.53 ± 6.80	70.09 ± 10.79^a	54.43 ± 13.59^a,b
Inflammatory markers
IL-6, pg/mL	83.11 ± 13.62	123.84 ± 13.26^a	140.96 ± 9.37^a,b
TNF-α, ng/L	8.10 ± 2.30	15.67 ± 2.60^a	26.34 ± 3.56^a,b
CRP, mg/L	2.40 ± 0.53	6.22 ± 1.37^a	12.00 ± 2.20^a,b
Others
MMP-9, μg/L	74.29 ± 6.44	118.77 ± 7.20^a	149.75 ± 9.44^a,b
VEGF, mg/L	21.13 ± 3.39	35.59 ± 4.13^a	62.42 ± 11.93^a,b

Note. versus control group; versus STCOPD group.