Table 2

Correlation coefficients between maximum values of cell counts, neutrophil elastase (NE) activity, matrix metalloproteinase (MMP)-9 concentrations, SerpinB1 concentrations, percentage α1-antitrypsin (AAT) and SerpinB1 in complex and MMP-9/TIMP-1 concentrations in BAL fluid from ventilated newborn infants

Maximum valueMaximum valueSpearman's correlation coefficient (p value)
Log10 MMP-9Log10 MMP-9/TIMP-10.94
Log10 elastase% SerpinB1 in complex0.88
Log10 SerpinB1% SerpinB1 in complex0.76
Log10 MMP-9Log10 cell count0.75
Log10 elastaseLog10 neutrophil count0.71
Log10 neutrophil count% SerpinB1 in complex0.70
Log10 elastaseLog10 SerpinB10.68
Log10 elastaseLog10 cell count0.65
Log10 elastaseLog10 MMP-90.65
% AAT in complex% SerpinB1 in complex0.64
% AAT in complexLog10 elastase0.62
Log 10 neutrophil countLog10 SerpinB10.62
Log 10 cell countLog10 SerpinB10.59

  • Statistical analysis for all correlations shown were statistically significant at p<0.001.