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The results of chi-square test (χ2) for relapse rate using different drugs
| Drugs | Ofloxacin | Norfloxacin | Ofloxacin-Norfloxacin |
| COL | 3.785 | 7.142** | 1.111 |
| Ofloxacin | 0.371 | 0.379 | |
| Norfloxacin | 1.336 |
Note: χ20.05(1)=3.841, χ20.01(1)=6.635.
means P<0.05,
means P<0.01.
