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Table 6 Correlation matrix (spearman correlation) of physiologic parameters/ventilator settings, CT scan, and PFTs

From: Whole pulmonary assessment 1 year after paediatric acute respiratory distress syndrome: prospective multicentre study

  Worse PaO2/FiO2 ratio Max OI Max DP Max Pplat maxVTE × kg−1 Max PEEP Max VI
CT-scan abnormalities − 0.2254 0.23702 0.42332 0.27985 − 0.18168 0.14739 0.1027
0.1798 0.2648 0.0278 0.1574 0.2889 0.3772 0.6252
37 24 27 27 36 38 25
Ground glass opacities − 0.28551 0.29183 0.41003 0.2727 − 0.08419 0.22173 0.1993
0.0867 0.1664 0.0337 0.1688 0.6254 0.1809 0.3395
37 24 27 27 36 38 25
Parenchymal consolidations − 0.27678 − 0.2602 0.3842 0.15842 − 0.05876 − 0.10985 − 0.05518
0.0972 0.2195 0.0479 0.43 0.7335 0.5115 0.7933
37 24 27 27 36 38 25
Septal reticulation 0.03512 0.06435 − 0.09486 0.04296 − 0.10981 − 0.15434 − 0.2817
0.8365 0.7652 0.6379 0.8315 0.5238 0.3549 0.1725
37 24 27 27 36 38 25
Honey combing − 0.00393 − 0.12242 0.05054 0.06321 − 0.16435 − 0.18822 − 0.08341
0.9816 0.5688 0.8023 0.7541 0.3382 0.2578 0.6918
37 24 27 27 36 38 25
Centrilobular cysts − 0.26548     − 0.2034 − 0.06868  
0.1123     0.2341 0.682  
37 24 27 27 36 38 25
Paraseptal cysts − 0.17358     − 0.2034 − 0.09846  
0.3042     0.2341 0.5564  
37 24 27 27 36 38 25
Fissure thickening and distortions − 0.08342 − 0.11809 0.02315 − 0.22449 − 0.30531 − 0.02586 0
0.6235 0.5826 0.9087 0.2603 0.0702 0.8775 1
37 24 27 27 36 38 25
Bronchiectasis − 0.05191 0.06128 0.32053 0.33418 0.11382 0.01895 0.09159
0.7603 0.7761 0.1031 0.0884 0.5086 0.9101 0.6633
37 24 27 27 36 38 25
Mosaic perfusion − 0.17837 0.17357 0.14341 0.06746 − 0.29036 0.31527 0.31858
0.2909 0.4173 0.4754 0.7381 0.0858 0.0539 0.1206
37 24 27 27 36 38 25
FRC, % predicted − 0.29732 0.27218 0.39217 0.38531 0.40472 0.05856 0.48912
0.1106 0.2457 0.0475 0.0472 0.0265 0.7586 0.0244
30 20 26 27 30 30 21
Rint, % predicted − 0.37828 0.83333 − 0.02462 0.1549 0.36364 0.21751 0.18333
0.2253 0.0053 0.9462 0.6493 0.2453 0.4971 0.6368
12 9 10 11 12 12 9
RL, % of predicted − 0.05858 0.64672    0.45238 − 0.08513 − 0.41917
0.881 0.0831 5 5 0.2604 0.8276 0.3013
9 8    8 9 8
CLdyn, % predicted 0.56067 − 0.7545    0.38095 − 0.70654 0.38324
0.1163 0.0305 5 5 0.3518 0.0333 0.3487
9 8    8 9 8
FVC, z-score − 0.34266   − 0.53522 − 0.47101 0.37762 0.08669 6
0.2756 5 0.0729 0.1222 0.2262 0.7888
12   12 12 12 12
FEV1, z-score − 0.25874   − 0.26409 − 0.25659 0.3007 0.0903 6
0.4168 5 0.4069 0.4208 0.3423 0.7802
12   12 12 12 12
FEV1/FVC ratio, z-score 0.09091   0.52466 0.30932 − 0.24476 0.1517  
0.7787 5 0.0799 0.3279 0.4433 0.6379  
12   12 12 12 12 6
SpO2 (end of 6MWT), % − 0.41912 7 − 0.35946 − 0.13085 − 0.04531 0.28603 7
0.1199   0.2277 0.67 0.8726 0.3014  
15   13 13 15 15  
TLCO, z-score 0.2381   − 0.23953 − 0.27545 0 − 0.31709  
0.5702   0.5678 0.5091 1 0.4441 4
8 3 8 8 8 8  
  1. CLdyn lung dynamic compliance, DP driving pressure = delta (Pplat-PEEP), FRC functional residual capacity, FEV1 forced expiratory volume in 1 s, FVC forced vital capacity, OI oxygenation index, Rint resistance by the interrupter method, RL total lung resistance, 6MWT 6-min-walk test, TLCO carbon monoxide transfer factor, VTE expiratory tidal volume, VI ventilation index
  2. Results are Spearman’s correlation coefficients with p-values