请教:如何用计算机建立随机数字表和进行患者随机分组?
我们一般是用sas软件随机产生随机数字。其中多中心随机双盲对照临床试验的SAS程序如下：PROCPLAN
SEED=210002;
FACTORS
center=3
block=10
length=10;
OUTPUT
OUT=fffff;DATA
ggggg;
SET
fffff;
number=_n_;
IF
length<=5
THEN
group='A';
ELSE
group='B';PROC
NOOBS;
VAR
center
number
group;RUN;
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