TY  - RPRT
        AU  - Gerdes, Christer
        TI  - Using "Shares" vs. "Log of Shares" in Fixed-Effect Estimations
        PY  - 2010/Sep/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 5171
        UR  - https://www.iza.org/publications/dp5171
        AB  - This paper looks at potential implications emerging from including "shares" as a control variable in fixed effect estimations. By shares I refer to the ratio of a sum of units over another, such as the share of immigrants in a city or school. As will be shown in this paper, a logarithmic transformation of shares has some methodological merits as compared to the use of shares defined as mere ratios. In certain empirical settings the use of the latter might result in coefficient estimates that, spuriously, are statistically significant more often than they should.
        KW  - spurious significance
KW  - symmetry
KW  - Törnqvist index
KW  - consistency
        ER  -