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Table 2 Statistical comparison between different groups regarding significant lung parameters of multi-detector CT by ANOVA test

From: Correlation between quantitative multi-detector computed tomography lung analysis and pulmonary function tests in chronic obstructive pulmonary disease patients

CT parameters Mean SD p value
Rt.U.LDI.percent
 Normal 7.3a 2.9  
 Mild constrictive 18a 0.0 0.015*
 Moderate constrictive 30.1a 22.6  
 Severe constrictive 27.1a 15.4  
 Very severe constrictive 45.5b 19.9  
RT.PD15.percent
 Normal 113.5a 13.4 0.047*
 Mild constrictive 90a 0.0  
 Moderate constrictive 73.6a 41.6  
 Severe constrictive 72.5a 29.5  
 Very severe constrictive 47.5b 37.6  
Lt.LLDI.percent
 Normal 14.6a 7.49 0.027*
 Mild 19.7a .00  
 Moderate 24.5a 11.8  
 Severe 29.1a 16.6  
 Very severe 37.4b 13.1  
Lt.U.LDI.percent
 Normal 12a 9.2 0.004*
 Mild 16.7a 0.0  
 Moderate 24.3a 12.6  
 Severe 26.5a 16.9  
 Very severe 41.1b 16.1  
LT.PD15percent
 Normal 101.5a 20.5 0.049*
 Mild 96a 0.0  
 Moderate 76.9a 35.4  
 Severe 72.8a 33.6  
 Very severe 49.1a 37.7  
Both U.LDIpercent
 Normal 9.5a 8.7 0.009*
 Mild 17.4a 0.0  
 Moderate 27.7a 18.2  
 Severe 26.7a 15.7  
 Very severe 43.1b 17.8  
  1. Different letters denote statistical significance at (< 0.05)