help regeffectsize
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Title

    regeffectsize --
                   Compute effect size for each variable in a regression model.

Syntax

        regeffectsize [, help ]


    options                  description
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      help                   Display help for eta^2 and partial eta^2
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Description

    regeffectsize computes effect size for each variable in model after regress command.  Output includes eta2 and partial eta2.

Remarks

    Eta squared can be interpreted as proportion of the total variance that is attributed to an effect.
 
    Partial eta squared can be interpreted as the proportion of effect + error variance that is attributable to the effect. The formulas
    for partial eta and eta squared differ in that the denominator includes the SSeffect plus the SSerror rather than the SStotal.

Examples

    . use http://www.ats.ucla.edu/stat/data/hsb2, clear
    . xi: regress write female read i.prog
    . regeffectsize
    . regeffectsize, help

Author

    Philip B. Ender
    UCLA Statistical Consulting Group
    ender@ucla.edu