这个，找SPSS点来算一下就有了啊

这个，不太明白啊．．．．

就是求ＳＡＳ的程序哒．．．．．．．．．．．．

悲惨．．．．．．

X2虽然有四个级别，但是数据中只有两种，你可以改一下，成为0，1。我写的仅供参考。你的数据我乍一看还以为是survival analysis呢，后来看看还是去掉t, 用logistic.

data aaa (drop=t);
input x1 x2 x3 t y;
datalines;

...

;

proc logistic data=aaa Descending;
class x2 /PARAM=REFERENCE Descending;
model y=x1 x2 x3;
run;

Actually, you can also include t and keep the original x2 data, treat x2 as factor as well. The following are the code I referenced floor 4, but give a little change. You can try both. choose the one you like.

Good Luck.

data aaa;
input x1 x2 x3 t y;
datalines;
2.5 0 0 3.4 0
1.2 2 0 3.73 0
173 2 0 3.73 0
3.5 0 0 3.83 0
119 2 0 4 0
39.7 0 0 4.03 0
... ... ... ...
;
run;

proc logistic data=aaa Descending;
class x2 x3/PARAM=REFERENCE Descending;
model y=x1 x2 x3 t;
run;

Thank you very much!!!