Displaying 1 result from an estimated 1 matches for "p53plus".
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m55plus
2008 Jun 02
1
Ancova: formula with a common intercept
...d the outcome is a continuous vairable (Result). I set up
a maximum model.
ancova <- lm(Result~Time*p53)
> summary(ancova)
..
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 0.05919 0.55646 0.106 0.916
Time -0.02134 0.01785 -1.195 0.241
p53plus 0.17059 0.78696 0.217 0.830
Time:p53plus 0.11887 0.02524 4.709 4.62e-05 ***
..
>From a plot of the data and the result of the linear model it looks like
the two categories share the same intercept. How do I define this? I
tried this:
> ancova2<-update(ancova,~.-1)
&g...