TABLE 4

Distribution Histograms of V/Q Ratios Depending on Scan Normality and Absence or Presence of PE

% V/QNormal scan (n = 16)PE absent (n = 65)PE present (n = 34)Unpaired t test result (P)
Comparison 1*Comparison 2†
<0.412.2 ± 1.313.2 ± 2.314.3 ± 2.80.010.04
<0.826.9 ± 7.529.9 ± 7.534.5 ± 8.20.0030.008
0.8–1.263.3 ± 13.059.1 ± 13.850.0 ± 16.00.0060.005
>1.29.8 ± 5.811.0 ± 7.415.5 ± 10.00.040.01
>1.60.8 ± 1.41.8 ± 4.54.6 ± 7.00.040.02
First moment0.87 ± 0.020.87 ± 0.050.89 ± 0.10NSNS
Second moment0.33 ± 0.040.36 ± 0.080.44 ± 0.180.020.002

  • ↵* Between normal scan and PE present.

  • ↵† Between PE absent and PE present.

  • NS = not statistically significant.