| Levene统计资料 | 自由度1 | 自由度2 | p值 |
city | 1.460 | 1 | 22 | 0.240 |
sex | 0.910 | 1 | 22 | 0.350 |
dose | 0.276 | 1 | 22 | 0.604 |
smoking | 1.139 | 2 | 21 | 0.339 |