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雷达卡
我的数据输入格式如下：
| ID | Treatment_Group | Visit | arrhythmia_Burden |
| 1 | 1 | 1 | 29 |
| 1 | 1 | 2 | 9.00 |
| 1 | 1 | 3 | 9.00 |
| 1 | 1 | 4 | 9.00 |
| 1 | 1 | 5 | 8.00 |
| 2 | 1 | 1 | 22 |
| 2 | 1 | 2 | 8.00 |
| 2 | 1 | 3 | 8.00 |
| 2 | 1 | 4 | 9.00 |
| 2 | 1 | 5 | 8.00 |
| 3 | 2 | 1 | 12.00 |
| 3 | 2 | 2 | 0.24 |
| 3 | 2 | 3 | 0.14 |
| 3 | 2 | 4 | 0.09 |
| 3 | 2 | 5 | 0.21 |
| 4 | 2 | 1 | 12.00 |
| 4 | 2 | 2 | 0.21 |
| 4 | 2 | 3 | 0.13 |
| 4 | 2 | 4 | 0.14 |
| 4 | 2 | 5 | 0.03 |
xi: xtgee arrhythmia_Burden i.Visit Treatment_Group, family(poisson) link(log) corr(exchangeable)
结果显示
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arrthymia_burden | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+--------------------------------------------------------------------------------
Vist~2 | -1.593604 .0227498 -70.05 0.000 -1.638192 -1.549015
Vist~3 | -1.577053 .0225755 -69.86 0.000 -1.621301 -1.532806
Vist~6 | -1.643281 .0235 -69.93 0.000 -1.68934 -1.597221
Vist~12 | -1.455204 .0210762 -69.05 0.000 -1.496513 -1.41389
treatment_gr | .1543955 .015338 10.07 0.000 .1243335 .1844575
_cons | 2.72943 .0166416 164.01 0.000 2.696813 2.762047
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请问这样处理正确吗？审稿专家要求还要先做“ an interaction term between the predictorvariables should be examined”，请问这个怎么做呢？谢谢！
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