Table 2 Correlations between the decline in the ESMCSAs and clinical parameters.

From: Early decrease in erector spinae muscle area and future risk of mortality in idiopathic pulmonary fibrosis

Variables

r

95%CI

P-value

Age, year

−0.044

−0.244–0.156

0.637

Baseline body mass index, kg/m2

−0.175

−0.357–0.020

0.057

Baseline FVC, % predicted

−0.285

−0.464–−0.089

0.002

Baseline FEV1/FVC, %

0.187

−0.009–0.369

0.042

Baseline DLCO, % predicted

−0.172

−0.337–0.017

0.063

Baseline distance walked during 6MWT, m

−0.171

−0.341–0.019

0.064

Baseline lowest SpO2 during 6MWT, %

−0.290

−0.458–−0.101

0.002

Relative decline in FVC, %

0.202

0.022–0.358

0.028

Relative decline in DLCO, %*

0.083

−0.096–0.267

0.377

Relative decline in body mass index, %

0.394

0.217–0.552

<0.001

  1. Abbreviations: ESMCSA;, cross-sectional areas of elector spine muscles; FVC, forced vital capacity; FEV1, forced expiratory volume in 1.0 second; DLCO, diffuse capacity of the lung for carbon monoxide; 6MWT, 6-minute walk test; SpO2, percutaneous oxygen saturation.
  2. *We analysed using n = 114 because 5 cases were missing.
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