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Table 3 Risk factors for AE in patients with fibrotic HP

From: Acute exacerbation of fibrotic hypersensitivity pneumonitis: incidence and outcomes

Characteristics

Unadjusted model

Multivariable model

HR (95% CI)

p-value

HR (95% CI)

p-value

Age

1.038 (0.988–1.091)

0.139

  

Female sex

1.303 (0.514–3.306)

0.577

  

BMI

0.919 (0.810–1.042)

0.188

  

Ever smoker

1.001 (0.386–2.591)

0.999

  

Positive history of exposure to antigen

1.239 (0.355–4.317)

0.737

  

Pulmonary function test

 FVC

0.987 (0.955–1.007)

0.151

  

 DLCO

0.959 (0.934–0.985)

0.002

0.960 (0.935 – 0.985)

0.002

 TLC

0.980 (0.944–1.017)

0.291

  

BALF analysis

 Neutrophil count

0.984 (0.909–1.065)

0.689

  

 Lymphocyte count

0.970 (0.937–1.003)

0.072

  

UIP-like pattern on HRCT

5.481 (1.566–19.182)

0.008

4.013 (1.128 – 14.283)

0.032

  1. AE acute exacerbation, BALF bronchoalveolar lavage fluid, BMI body mass index, DLCO diffusing capacity of the lung for carbon monoxide, FVC forced vital capacity, HP hypersensitivity pneumonitis, HR hazard ratio, HRCT high-resolution computed tomography, TLC total lung capacity, UIP usual interstitial pneumonia