> -----Original Message-----
> From: [email protected] [mailto:owner-
> [email protected]] On Behalf Of G. ter Riet
> Sent: Thursday, December 16, 2004 6:12 PM
> To: [email protected]
> Subject: st: reshaping a data file: cell frequency = number of rows in the
> new data set
>
> Dear List members,
> In the context of a diagnostic meta-analysis, I have data from 2x2
> tables (cells a thru' d, signifying true positives, false positives,
> etc). My file has a wide format and is perfectly suited for a meta-
> analytic command like <metan a b c d, or>.
> As a hypothetical example, suppose one of my studies (rows) contained
> the cell frequencies 1 2 3 4, for variables a, b, c, d, respectively.
> How could I efficiently create another file (long format), based on
> these data, that looked like
> 1 1
> 1 0
> 1 0
> 0 1
> 0 1
> 0 1
> 0 0
> 0 0
> 0 0
> 0 0
> where the 1st column signified a binary test result, and the 2nd
> column a binary outcome according to a reference standard (gold
> standard test).
> Any help would be much appreciated.
>
> Gerben ter Riet, Amsterdam
>
For those, like me, unfamiliar with meta-analysis and its data structure, it
might make it easier if we know what your (hypothetical) data looks like
now.
Scott
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