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. 2019 Apr;7(2):137–143. doi: 10.29252/beat-070208

Table 2.

Chi-square test for categorized variables in MIL-CESI and PSIL-CESI groups

Variable Midline group Parasagittal group X2,  p-value
Percent Frequency Percent Frequency
Gender Male 69.2 9 46.2 6 X2=1.418
Female 30.8 4 53.8 7 P=0.214
BMI category 18.5-24.9 30.8 4 7.7 1  
25-29.9 38.5 5 53.8 7 X2=2.467
30-34.9 23.1 3 23.1 3 P=0.418
35-39.9 7.7 1 15.4 2  
Pain duration 4 months 38.5 5 30.8 4  
5 months 30.8 2 30.8 4 X2=0.311
6 months 15.4 2 23.1 3 P=0.958
7 months 15.4 2 15.4 2  
Herniated disc level C4-C5 0 0 7.7 1  
C5-C6 69.2 9 61.5 8 P=0.387
C6-C7 30.8 4 30.8 4  
Painful side Right 61.5 8 53.8 7 X2=0.158
Left 38.5 5 46.2 6 P=0.5
Distribution of radiocontrast Center 92.3 12 7.7 1 X2=18.97
Right 0 0 53.8 7 P=0.001
Left 7.7 1 38.5 5