Serum SP-A and KL-6 levels can predict the improvement and deterioration of patients with interstitial pneumonia with autoimmune features

Table 2 Baseline characteristics of the three groups of patients with IPAF

	Progressive	Improved	Stable	P value
Number, n	9	13	14	–
Age, year	53.78 ± 17.18	53.38 ± 10.85	53.44 ± 12.16	0.996
Female, n (%)	5 (55.55%)	9 (69.23%)	8 (57.14%)	0.753
BMI (kg/m²)	24.36 ± 3.05	24.13 ± 4.49	24.38 ± 2.19	0.979
Smoker, n (%)	2 (22.22%)	2 (15.38%)	5 (35.71%)	0.379
DLCO (% Pred)	62.37 ± 14.43	54.05 ± 12.8	53.85 ± 13.54	0.355
FVC (% Pred)	68.59 ± 11.92	69.76 ± 10.82	76.25 ± 19.82	0.220
FEV1 (% Pred)	73.74 ± 14.49	70.44 ± 10.85	80.6 ± 18	0.422

IPAF Interstitial pneumonia with autoimmune features, BMI body mass index, DLCO diffusing capacity for carbon monoxide, FVC forced vital capacity, FEV1 forced expiratory volume in 1 s, SP-A surfactant protein-A, KL-6 Krebs von den Lungen-6, %Pred percent predicted. The data are presented as median with interquartile range or as number (percentage)

ISSN: 1471-2466