# st: Re: Re: weight and aggregate

 From "Hoang Thanh Huong(Yahoo)" <[email protected]> To <[email protected]> Subject st: Re: Re: weight and aggregate Date Mon, 16 Aug 2004 20:06:37 +0700

```Rafa,
I will try. Thank you very much
Best,

Huong
----- Original Message -----
From: "R.E. De Hoyos" <[email protected]>
To: <[email protected]>
Sent: Monday, August 16, 2004 6:26 PM
Subject: st: Re: weight and aggregate

> Huong,
>
> To calculate population's total income:
>
> sum hhincome [aw=weight]
>
> scalar totincome = `r(sum)'
>
> Rafa
>
> ----- Original Message -----
> From: "Hoang Thanh Huong(Yahoo)" <[email protected]>
> To: <[email protected]>
> Sent: Sunday, August 15, 2004 2:23 AM
> Subject: st: weight and aggregate
>
>
> > Hi all,
> >
> > Anybody has this problem:
> > - I have a variable on household income (at household level)
> > -I have weight at household level.
> > Now I want to calculate income of all houshols with weight. But how
should
> I
> > do?
> >
> > Best,
> > Huong
> >
> > ---- Original Message -----
> > From: "tmmanini" <[email protected]>
> > To: <[email protected]>
> > Sent: Sunday, August 15, 2004 5:04 AM
> > Subject: st: ancova for repeated designs
> >
> >
> > > I'm trying to run a supposed simple ancova model, controlling for
> pre-test
> > > values.  subjects are placed
> > > in three groups and then tested at three different time points. I
would
> > like
> > > to covary for the first time
> > > point, examine the group*covariate interaction and calculate the
> > > means.  I've listed 10
> > > subjects (I really have 32) below (g=group, t=time, y=depvar,
> > x=covariate).  g
> > > is a between factor, t is a
> > > repeated factor.
> > >
> > > id g t y x
> > > 1 1 1 1 1
> > > 1 1 2 1 1
> > > 1 1 3 1 1
> > > 3 2 1 1 1
> > > 3 2 2 1 1
> > > 3 2 3 1 1
> > > 4 3 1 5 5
> > > 4 3 2 5 5
> > > 4 3 3 1 5
> > > 6 2 1 5 5
> > > 6 2 2 4 5
> > > 6 2 3 1 5
> > > 7 3 1 6 6
> > > 7 3 3 6 6
> > > 7 3 2 6 6
> > > 8 1 1 3 3
> > > 8 1 2 3 3
> > > 8 1 3 3 3
> > > 9 1 1 6 6
> > > 9 1 2 6 6
> > > 9 1 3 6 6
> > > 10 1 1 1 1
> > > 10 1 2 1 1
> > > 10 1 3 1 1
> > >
> > > When I run this with the 10 subjects listed above, I can't get the
> > interaction
> > > term b/c the df=0 (see
> > > below)
> > >
> > > anova y x g / id | g t g*t x*g, cont(x) rep(t)
> > >
> > > Number of obs =      24     R-squared     =  0.9126
> > > Root MSE      = .983192     Adj R-squared =  0.7990
> > >
> > > Source   Partial SS    df       MS           F     Prob > F
> > > -----------+----------------------------------------------------
> > > Model   100.958333    13  7.76602564       8.03     0.0012
> > >
> > > x         37.5     1        37.5      25.05     0.0075
> > > g   2.98197901     2   1.4909895       1.00     0.4457
> > > idg   5.98844884     4  1.49711221
> > > -----------+----------------------------------------------------
> > > t          7.6     2         3.8       3.93     0.0550
> > > g*t   4.91666667     4  1.22916667       1.27     0.3437
> > > x*g            0     0
> > >
> > > Residual   9.66666667    10  .966666667
> > > -----------+----------------------------------------------------
> > > Total      110.625    23  4.80978261
> > >
> > >
> > > when I try the adjust command, I come up with blanks (below)
> > >
> > > adjust x, by(g t)
> > >
> > > Dependent variable: y Command: anova
> > > Variable left as is: id
> > > Covariate set to mean: x = 3.5
> > >
> > > t
> > > g     1     2     3
> > >
> > > 1
> > > 2
> > > 3
> > >
> > > What is really annoying is the fact that I can use this same design in
> > SPSS
> > > and not have a problem, but I
> > > would really like to use STATA.  I've examined all the material on the
> > > which has lead me to this point, but if you have another resource
> > point
> > > me in the right direction.
> > >
> > >
> > >
> > > *
> > > *   For searches and help try:
> > > *   http://www.stata.com/support/faqs/res/findit.html
> > > *   http://www.stata.com/support/statalist/faq
> > > *   http://www.ats.ucla.edu/stat/stata/
> > >
> > >
> >
> > *
> > *   For searches and help try:
> > *   http://www.stata.com/support/faqs/res/findit.html
> > *   http://www.stata.com/support/statalist/faq
> > *   http://www.ats.ucla.edu/stat/stata/
> >
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>
>

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/
```