I"ve tried to send this to you several times. I get an error message
every time I try, but here is what I wanted to send.
I'm confused by something in svymean and repcat.
Here is what I've done:
I've created some repcat categories using a variable I've created from
the joint cell frequencies on a crosstabulation I've been using, and I
want to use the ci's for each of the joint frequencies. So I did the
following:
. tab cells
cells | Freq. Percent Cum.
------------+-----------------------------------
1 | 47 22.60 22.60
2 | 51 24.52 47.12
3 | 49 23.56 70.67
4 | 61 29.33 100.00
------------+-----------------------------------
Total | 208 100.00
. tab cells, gen(repcell)
cells | Freq. Percent Cum.
------------+-----------------------------------
1 | 47 22.60 22.60
2 | 51 24.52 47.12
3 | 49 23.56 70.67
4 | 61 29.33 100.00
------------+-----------------------------------
Total | 208 100.00
. ci repcell1
Variable | Obs Mean Std. Err. [95% Conf. Interval]
-------------+---------------------------------------------------------------
repcell1 | 208 .2259615 .0290679 .1686545 .2832686
. ci repcell2
Variable | Obs Mean Std. Err. [95% Conf. Interval]
-------------+---------------------------------------------------------------
repcell2 | 208 .2451923 .029901 .1862427 .3041419
. ci repcell3
Variable | Obs Mean Std. Err. [95% Conf. Interval]
-------------+---------------------------------------------------------------
repcell3 | 208 .2355769 .029495 .1774279 .293726
. ci repcell4
Variable | Obs Mean Std. Err. [95% Conf. Interval]
-------------+---------------------------------------------------------------
repcell4 | 208 .2932692 .0316428 .2308857 .3556527
.
Now shouldn't the samples be 47, 51, 49, and 61 for each of the
confidence intervals I've created ci's for? I used the joint
probabilities found in cells, which is derived from a crosstabulation
for the repcell categories. If anyone can clear me up on this I would
appreciate it.
jon ebeling
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