st: Plotting stored estimates

[Sara Mottram <s.mottram@cphc.keele.ac.uk>]

Apologises if this is a basic question.
I have a binary variable kcons which indicates whether or not the person 
has consulted their doctor about knee pain and another variable age_cat, 
indicating the age group to which the person belongs.
I have calculated the mean of kcons within each level of age_cat using 
-mean- with the -over()-, option to get the probability of consulting 
with knee pain in each age group. I have then saved these estimates 
using -estimates store-.
I would now like to produce a scatter plot the proportion of people who 
consult in each category against age_cat to assess whether there is a trend.
This sounds like it should be straightforward but I can't work out from 
the manuals (I have looked under _estimates in the programming manual) 
and I can't find anything in the FAQs about how to do this. If I try 
scatter _est age_cat, I get a flat plot. I could of course produce a 
plot in Excel by typing in the results of -mean-, but I feel that this 
is probably an important feature that I should learn to use properly?
I have included my code and out put below.
Sara

. mean kcons, over(age_cat)

Mean estimation                     Number of obs    =     742

   _subpop_1: age_cat = 50-54
   _subpop_2: age_cat = 55-59
   _subpop_3: age_cat = 60-64
   _subpop_4: age_cat = 65-69
   _subpop_5: age_cat = 70-74
   _subpop_6: age_cat = 75-79
   _subpop_7: age_cat = 80+

--------------------------------------------------------------
       Over |       Mean   Std. Err.     [95% Conf. Interval]
-------------+------------------------------------------------
kcons_p18m   |
  _subpop_1 |   .2911392   .0514379      .1901578    .3921207
  _subpop_2 |   .2205882   .0356868      .1505289    .2906475
  _subpop_3 |    .221374    .036413      .1498892    .2928589
  _subpop_4 |   .3164557   .0371185      .2435858    .3893256
  _subpop_5 |   .2605042   .0404049      .1811825    .3398259
  _subpop_6 |   .3766234   .0555805      .2675095    .4857373
  _subpop_7 |   .4047619   .0766573      .2542706    .5552532
--------------------------------------------------------------

. estimates store propnknee
. plot _est age_cat

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         +----------------------------------------------------------------+
               1                     age_cat                            7



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