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st: RE: data manipulation

From   "Frank de Libero" <[email protected]>
To   <[email protected]>
Subject   st: RE: data manipulation
Date   Wed, 26 Jan 2005 07:41:37 -0800

In addition to David's response, the format below is in First Normal
Form (1NF), which is preferred. An Internet search on "First Normal
Form" will get you further information.


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Simon Moore
Sent: Wednesday, January 26, 2005 7:21 AM
To: [email protected]
Subject: st: data manipulation

I am to work with some data that has been inputted in SPSS in a rather 
unusual format.  Transferring from SPSS into Stata is not the problem - 
rearranging the data into a format I am comfortable with is.  At the 
moment it looks something like this:

id       date       time     person_id Gender    Injury

1        21/1/2005  23:10    1         M         Face
.        .          .        2         M         Head
.        .          .        3         F         Legs
2        23/1/2005  04:15    1         M         Arms
.        .          .        2         F         Feet
3        23/1/2006  05:10    1         F         Face

The data refers to violent incidents in a particular area.  For each 
incident more than one person (the maximum is somewhere around 6 but 
could go higher as new data arrives) may have been involved each 
sustaining different injuries.

I would like to rearrange these data into a form something like this:

id date time gender1 injury 1 gender2 injury2 ...

As far as I can see -collapse- will not help me much.  So, has anyone 
had experience with this type of problem and could you point me in the 
right direction?

Many thanks

Simon Moore
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