Impact of antigen avoidance test for fibrotic hypersensitivity pneumonitis in stable phase

Table 5 Cox hazard regression analysis for mortality or acute exacerbation in patients with fibrotic HP

Variables	Level	Univariate p	Multivariate
Variables	Level	Univariate p	HR	95% CI	p
Age		0.169
Smoking history	Never vs. Former and current	0.263
Serum Krebs von den Lungen-6 (U/mL)	≥ 1630 vs. < 1630	0.678
Forced vital capacity (%)	≥ 80 vs. < 80	0.137	0.46	0.153–1.41	0.174
Lymphocytes in BAL (%)	≥ 30 vs. < 30	0.218
Airway-centered fibrosis		0.370
Lymphocyte-predominant Bronchiolitis		0.615
Poorly formed granulomas		0.338
Fibroblastic foci		0.210
Organizing pneumonia		0.109	6.49	0.75–56.0	0.089
Antigen avoidance test	Positive vs. Negative	0.081	0.26	0.07–0.90	0.034

HP: hypersensitivity pneumonitis; HR: hazard ration; CI: confidence interval; BAL: bronchoalveolar lavage

ISSN: 1710-1492