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RE: st: Table output, how to get percent of row total? (2)


From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   RE: st: Table output, how to get percent of row total? (2)
Date   Tue, 7 Oct 2003 23:26:14 +0100

Daniel R Sabath

> > I need to create a table which contains percent of row
> > total and frequency.
> > I've been looking through table and tabdisp and haven't
> > figured it out.
> >
> > The table I am looking for is very similar to the following. From
> > http://www.biomedcentral.com/1472-6963/3/4/table/T1
> > ------------------------------------------------------------
> > Characteristics of diabetic subjects according smoking
> > status. Figures are
> > frequencies (percent of row total).
> >
> > 			Never smoked (968)	Current smoker (296)
> > Ex-smoker (582)	All
> >
> >
> > Sex	Men		374 (40)			166 (18)
> > 361 (39)		928
> > 	Women		594 (61)			130 (13)
> > 221 (23)		971
> > Age Group (Years)
> > 	< 45		117 (53)			60 (27)
> > 42 (19)		219
> > 	45-54		126 (57)			49 (22)
> > 45 (20)		221
> > 	55-64		281 (54)			78 (15)
> > 151 (29)		520
> > 	65-74		263 (47)			78 (14)
> > 200 (36)		556
> > 	? 75		158 (48)			25 (8)
> > 134 (41)		326
> > 	Not known	23 (40)			6 (11)
> > 	10
> > (18)		57

I earlier presented a hack based on a wrapper
for -tabdisp-. This fell short of a right-hand column
giving row totals. For that, it seems cleaner
to use -list- as the output command.

The sequel program is -oct8- (although it isn't yet,
as of this longitude):

. program li oct8

oct8:
  1.         version 8
  2.         syntax varlist(max=2) [if] [in] [, *]
  3.         marksample touse, strok
  4.         tokenize `varlist'
  5.         args row col
  6.         tempvar freq percent show
  7.         qui {
  8.                 bysort `touse' `row' `col' : gen `freq' = _N
  9.                 by `touse' `row' : gen `percent' =
string(round(100 * `freq' / _N))
 10.                 replace `percent' = "(" + `percent' + ")"
 11.                 replace `percent' = " " + `percent' if
length(`percent') == 3
 12.                 if "`col'" == "" gen `show' = `freq'
 13.                 else gen `show' = string(`freq') + " " +
`percent'
 14.                 if "`col'" == "" char `show'[varname] "Total"
 15.                 else {
 16.                         tempvar total
 17.                         separate `show' if `touse', by(`col')
 18.                         local show "`r(varlist)'"
 19.                         levels `col' if `touse', local(levels)
 20.                         local j = 1
 21.                         foreach v of local show {
 22.                                 char `v'[varname] `"`: word `j++'
of `levels''"'
 23.                                 bysort `touse' `row' (`v') :
replace `v' = `v'[_N]
 24.                         }
 25.                         by `touse' `row': gen `total' = _N
 26.                         char `total'[varname] "Total"
 27.                 }
 28.                 by `touse' `row': replace `touse' = `touse' * (_n
== 1)
 29.         }
 30.         list `row' `show' `total' if `touse', subvarname noobs
`options'

.  oct8 foreign

  +------------------+
  |  foreign   Total |
  |------------------|
  | Domestic      52 |
  |  Foreign      22 |
  +------------------+

.  oct8 foreign rep78

  +----------------------------------------------------------------+
  |  foreign        1        2         3        4        5   Total |
  |----------------------------------------------------------------|
  | Domestic   2  (4)   8 (17)   27 (56)   9 (19)   2  (4)      48 |
  |  Foreign                      3 (14)   9 (43)   9 (43)      21 |
  +----------------------------------------------------------------+

.  oct8 foreign rep78, divider

  +----------------------------------------------------------------+
  |  foreign |      1 |      2 |       3 |      4 |      5 | Total |
  |----------+--------+--------+---------+--------+--------+-------|
  | Domestic | 2  (4) | 8 (17) | 27 (56) | 9 (19) | 2  (4) |    48 |
  |  Foreign |        |        |  3 (14) | 9 (43) | 9 (43) |    21 |
  +----------------------------------------------------------------+

. bysort himpg : oct8 foreign rep78, divider

______________________________________________________________________
_________
-> himpg = 0

  +-----------------------------------------------------------------+
  |  foreign |      1 |      2 |       3 |      4 |       5 | Total |
  |----------+--------+--------+---------+--------+---------+-------|
  | Domestic | 1  (3) | 5 (16) | 20 (63) | 6 (19) |         |    32 |
  |  Foreign |        |        |         |        | 4 (100) |     4 |
  +-----------------------------------------------------------------+

______________________________________________________________________
_________
-> himpg = 1

  +---------------------------------------------------------------+
  |  foreign |      1 |      2 |      3 |      4 |      5 | Total |
  |----------+--------+--------+--------+--------+--------+-------|
  | Domestic | 1  (6) | 3 (19) | 7 (44) | 3 (19) | 2 (13) |    16 |
  |  Foreign |        |        | 3 (18) | 9 (53) | 5 (29) |    17 |
  +---------------------------------------------------------------+

The example is not as interesting as the method:

1. construct variables to be shown making heavy use of -by:-,
-_N-, -_n- etc.

2. use string variables for all special effects, e.g. composites
of variables within one cell.

3. use -list- as an output command.

Nick
[email protected]

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