Table 2: Patients who participated in the study classified by sex. X2 analysis to test H0: There is not statistically significant difference between men and women who received treatment (physical therapy, ozone and intravenous injections) to reduce the low back pain at a significance level of P < 0.05 using 1 as degrees of freedom (v).

Treatment success Men n (%) Women n (%) Total n (%) P value X2 calculated X2 table H0
Yes 364 (36.4%) 367 (36.4%) 731 (73.1%) 0.8390 0.0413 3.8415 Accepted
No 132 (13.2%) 137 (13.7%) 269 (26.9%)
Total 496 (49.6%) 504 (50.4%) 1,000 (100%)