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st:simple way to count how many variables' value is uner 10 for a case
From
Man Jia <[email protected]>
To
[email protected]
Subject
st:simple way to count how many variables' value is uner 10 for a case
Date
Mon, 16 Jun 2008 02:17:43 -0400 (EDT)
Hi all,
I was wondering if anyone could suggest a simple way to do the
following job.
The data set is like this:
-----------------------------------------------------------------------
caseid var1 var2 var3 var4 ......... var10
1 6 8 9 15 ...
11
2 3 4 5 7 ...
0
3 1 2 10 14 ...
26
. . . . .
.
. . . . .
.
. . . . .
.
------------------------------------------------------------------------
I want to find out for each case totally how many times the values for
var1,var 2....var20 are under 10.
I think I could creat dummy variables defining 1 for those variable's
value is under 10. That is as follows:
-----------------------------------------------------------------------
caseid new_var1 new_var2 new_var3 new_var4 ...new_var10
1 1 1 1 0 ...
0
2 1 1 1 1 ...
1
3 1 1 0 0 ...
0
. . . . .
.
. . . . .
.
. . . . .
.
------------------------------------------------------------------------
And then I could creat a new variable as sum_var=new_var1 + new_var2
+.....+new_var10
My question is, is there any way more simple than this?
Thanks!
Man Jia
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