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Comparison of basic data of patients in the two groups
两组患者一般资料比较
| 项目 Item |
早期组（n=27） Early group (n=27) |
晚期组（n=28） Late group (n=28) |
统计值 Statistic |
| 年龄（岁） | 52.94±12.14 | 53.44±13.57 |
t=0.741 P=0.412 |
| 性别（例） | |||
| 男 | 12 | 13 | χ2=0.183 |
| 女 | 15 | 15 | P=0.656 |
| 疾病类型 | |||
| 腰椎退变性滑脱 | 7 | 5 | χ2=0.526 |
| 腰椎管狭窄症伴腰椎不稳 | 16 | 18 | P=0.724 |
| 腰椎间盘突出症伴腰椎不稳或病变间隙存在Modic改变 | 4 | 5 | |
| 手术节段 | |||
| L2、3 | 1 | 2 | χ2=0.448 |
| L3、4 | 3 | 2 | P=0.716 |
| L4、5 | 13 | 12 | |
| L5、S1 | 10 | 12 |
