同问

You have to do it manually.

proc transpose
data=sbpflat
out=sbp1
prefix=sbp;
by subject;
run;
data sbp1(drop=_name_);
set sbp1;
rename sbp1=sbp;
visit=input(substr(_name_,length(_name_)),8.);
run;

太赞了！！[em17]

还有个疑问，在使用Proc transpose的时候，如何确定prefix后面要加的名字是用于哪个变量呢？？
如果有Var语句，就知道是根据哪个变量做transpose，可是如果没有Var语句呢？怎么判断？？

你的回复很简单，但逻辑很强！多谢多谢！[em17][em17]

All the values in the columns that are not "by" or _name_ or _type_ (or maybe some other columns created by SAS) will be transposed into one column with name defined by prefix.

In the following example, you will find that I created a column "a" in sbpflat before transposing and it will be transposed and included in column "sbp1".

At the same time, I also created a column "_type_", but it was ignored together with "_name_" by proc transpose.

Hope that answers your question.

data sbp;
input subject $ visit sbp;
datalines;
101 1 160
101 3 140
101 4 130
101 5 120
202 1 141
202 3 161
202 4 171
202 5 181
;
run;

proc transpose
data=sbp
out=sbpflat
prefix=VISIT;
by subject;
id visit;
var sbp;
run;

data sbpflat;
set sbpflat;
_type_="A";
a=visit1+visit3;
run;

proc transpose
data=sbpflat
out=sbp1
prefix=sbp;
by subject;
run;

O(∩_∩)O感谢您的回复！感激得五体投地！！
现在我明白啦！前几天上课的时候老师有涉及这部分，再加上看了您精湛的回复，忽然觉得世界一下子明亮了！
正在准备SAS Adv考试，今后可能还不断地有诸多疑问，还请您不吝赐教！[em49]