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st: Significativity regression
From
"Ayayi, Ayi" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: Significativity regression
Date
Fri, 10 Jan 2014 18:32:34 +0000
- I have stata IC 10
- I am conducting three-multilevel analysis let say
mixed y X1 X2 || country: || Microfinance . In this regression X1 and X2 are statistically significant
Now I add X3 the regression becomes:
mixed y X1 X2 X3|| country: || Microfinance
In this regression X2 is no longer significant. The same problem arised when I add more than one variable
I've checked for mulicollinearity among the variables with VIF and Collin and all the VIF . There is no collinearity . All the ViF are less than 2. So there is no mucollinearity
Could you be please let me know what is the problem and how can I handle it
Many thanks for your time
Ayi Gavriel Ayayi
e-mail: [email protected]
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