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Table 2 Comparison of chest wall motion on three transversal planes on dynamic MRI between IPF patients and control group

From: Evaluation of respiratory muscle dysfunction in patients with idiopathic pulmonary fibrosis: a prospective observational study with magnetic resonance imaging

Ratios

Quiet breathing

Deep breathing

Controls

IPF

P

Controls

IPF

P

The arcus aortae level

Left AP

1.02 (1.01, 1.05)

1.02 (1.01, 1.03)

0.151

1.17 (1.12, 1.25)

1.11 (1.06, 1.18)

<0.001*

Right AP

1.01 (0.99, 1.03)

1.02 (1.00, 1.03)

0.252

1.15 (1.12, 1.22)

1.09 (1.06, 1.14)

<0.001*

LR

1.01 (1.00, 1.02)

1.01 (1.00, 1.02)

0.432

1.06 (1.04, 1.08)

1.04 (1.02, 1.08)

0.067

Area

1.02 (1.01, 1.04)

1.02 (1.01, 1.04)

0.252

1.26 (1.16, 1.34)

1.16 (1.08, 1.27)

<0.001*

The tracheal carina level

Left AP

1.01 (1.01, 1.02)

1.02 (1.01, 1.04)

0.054

1.14 (1.08, 1.18)

1.09 (1.06, 1.14)

0.004*

Right AP

1.01 (1.00, 1.03)

1.01 (1.01, 1.02)

0.322

1.13 (1.07 1.17)

1.07 (1.04, 1.11)

<0.001*

LR

1.01 (1.00, 1.01)

1.01 (1.00, 1.01)

0.462

1.04 (1.03, 1.05)

1.03 (1.02, 1.05)

0.068

Area

1.02 (1.01, 1.03)

1.02 (1.01, 1.03)

0.864

1.19 (1.12 1.28)

1.11 (1.06, 1.17)

<0.001*

The diaphragm dome level

Left AP

1.02 (1.01,1.03)

1.01 (1.01, 1.02)

0.092

1.12 (1.06, 1.15)

1.07 (1.03, 1.09)

<0.001*

Right AP

1.01 (1.00, 1.02)

1.01 (1.01, 1.02)

0.056

1.10 (1.06, 1.12)

1.06 (1.04, 1.09)

<0.001*

LR

1.00 (1.00, 1.01)

1.00 (1.00, 1.01)

0.527

1.03 (1.02, 1.05)

1.03 (1.02, 1.05)

0.438

Area

1.01 (1.00, 1.02)

1.01(1.00, 1.02)

0.051

1.16 (1.08, 1.22)

1.09 (1.06, 1.15)

<0.001*

  1. NOTE: *p < 0.05. IPF, idiopathic pulmonary fibrosis; AP, anterior-posterior (AP) distance; LR, left-right (LR) distance