Table 1 

Correlation between sizes of blobs and frequencies of characteristics 

characteristics 
SV 
CV 
VLES 
Total** 


Chronic coughs 
P = 0.119 *(mean of positives = 12.37 ± 5.52, mean of negatives = 9.63 ± 5.21) 
P = 0.422 (mean of positives = 9.21 ± 7.40, mean of negatives = 7.26 ± 7.69) 
P = 0.029 (mean of positives = 12.37 ± 6.69, mean of negatives = 7.46 ± 7.05) 
P = 0.076 (mean of positives = 34.37 ± 14.37, mean of negatives = 24.36 ± 14.21) 


Smoking 
P = 0.94 (mean of positives = 13.30 ± 4.80, mean of negatives = 10.32 ± 5.72) 
P = 0.780 (mean of positives = 8.30 ± 8.17, mean of negatives = 8.98 ± 7.15) 
P = 0.151 (mean of positives = 13.06 ± 6.94, mean of negatives = 9.82 ± 6.92) 
P = 0.253 (mean of positives = 34.66 ± 17.21, mean of negatives = 29.37 ± 13.45) 


History of omeprazole 
P = 0.214 (mean of positives = 9.63 ± 5.23, mean of negatives = 12.04 ± 5.55) 
P = 0.493 (mean of positives = 7.181 ± 7.53, mean of negatives = 9.00 ± 7.51) 
P = 0.710 (mean of positives = 10.00 ± 6.03, mean of negatives = 10.93 ± 7.54) 
P = 0.537 (mean of positives = 26.81 ± 12.31, mean of negatives = 32.28 ± 15.68) 


Hiatal hernia 
P = 0.207 (mean of positives = 14.40 ± 4.33, mean of negatives = 11.06 ± 5.58) 
P = 0.172 (mean of positives = 4.40 ± 6.06, mean of negatives = 9.07 ± 7.53) 
P < 0.001(considered as a huge ED) (mean of positives = 20 ± 0.00, mean of negatives = 9.51 ± 6.69) 
P = 0.869 (mean of positives = 38.80 ± 7.69, mean of negatives = 29.84 ± 15.41) 


Heartburn 
P = 0.040 (mean of positives = 13.30 ± 5.91, mean of negatives = 9.89 ± 4.75) 
P = 0.920 (mean of positives = 8.5 ± 8.98, mean of negatives = 8.56 ± 6.07) 
P = 0.010 (mean of positives = 13.67 ± 6.71, mean of negatives = 8.22 ± 6.62) 
P = 0.230 (mean of positives = 35.47 ± 17.22, mean of negatives = 26.89 ± 11.60) 


Epigastric pain 
P = 0.665 (mean of positives = 11.97 ± 7.39, mean of negatives = 11.11 ± 4.05) 
P = 0.905 (mean of positives = 8.80 ± 8.82, mean of negatives = 8.42 ± 6.62) 
P = 0.023 (mean of positives = 12.97 ± 6.95, mean of negatives = 9.27 ± 7) 
P = 0.688 (mean of positives = 33.64 ± 18.23, mean of negatives = 29.07 ± 12.41) 


Regurgitation 
P = 0.417 (mean of positives = 12.04 ± 5.76, mean of negatives = 10.65 ± 5.22) 
P = 0.276 (mean of positives = 9.6 ± 7.90, mean of negatives = 7.05 ± 6.76) 
P = 0.007 (mean of positives = 13.18 ± 6.12, mean of negatives = 7.44 ± 7.21) 
P = 0.216 (mean of positives = 34.82 ± 15.78, mean of negatives = 25.41 ± 12.08) 


*mean of positives shows the mean of blob size in the cases that had the characteristic and mean of negatives shows the mean of blob size in the cases that didn't have it. **the summation of sizes of blobs in whole of esophagus. 

Moosavi et al. BMC Medical Imaging 2012 12:2 doi:10.1186/14712342122 