求翻译：与传统注射方法比较，接受改良注射法的220人中度疼痛72人，占总数的32.7%，明显低于接受传统注射法的150人，两组比较差异有统计学意义（x2= 55.31，p＜0.05）。是什么意思？

Compared with the traditional injection method, injection method modified to accept moderate pain 72 220, accounting for 32.7%, significantly lower than for traditional injection of 150, the difference was statistically significant (x2 = 55.31, p <0.05).

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Compares with the traditional injection method, accepts the improvement jet method 220 human of moderate ache 72 people, accounts for the total 32.7%, is lower than obviously accepts the traditional jet method 150 people, two group of comparison differences have statistics significance (x2= 55.31, p

Compared with the traditional injection methods, 220 people accept the improved injection method of pain 72, 32.7% per cent of the total, significantly lower than traditional injection methods of 150 people, two sets of comparison difference statistically significant (X2=55.31,p<0.05).

Inject the method with the tradition to compare, accept to improve 72 220 persons' intermediate pain which injects the law, accounts for 32.7% of the total number, obviously less than accepting 150 people whose tradition injects the law, two groups of comparative differences have statistics meanings