2.
两组临床疗效比较 [n（%）]
| 组别 | n | 显效 | 有效 | 无效 | 总有效率 |
| 对照组 | 44 | 12(27) | 21(48) | 11(25) | 33(75) |
| 研究组 | 44 | 27(61) | 14(32) | 3(7) | 41(93) |
| Z(χ2)值 | 3.151 | (5.436) | |||
| P值 | 0.002 | 0.020 | |||
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