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The comparison of occurrence of clinical symptoms in patients before and after the operation
| Before the surgery | After the surgery | The result of the test | |
|---|---|---|---|
| The number (the percentage) of kidney units | 36 (100%) | 36 (100%) | χ2 = 18.126 |
| Without symptoms | 10 (68%) | 29 (36%) | df = 1 |
| With symptoms | 26 (32%) | 7 (64%) | p <0.0001 |
