stata中如何使统计量加上星号,而不是回归参数

outreg2命令里面有选择，加到统计量上


    alpha(numlist) specifies the levels of significance, separated by comma from the most significant to the
        least signficiant. Example: alpha(0.001, 0.01, 0.05). Up to 3 are automatically assigned asterisks. If
        more than 3 levels are defined, then the symbols must be specified with symbol(text).

    symbol(text) specifies symbols for the levels of significance from the most significant to the least
        significant, the default symbol(***, **, *). The significance levels of 0.01, 0.05, and 0.10 will be
        automatically assigned in that order. If more than 3 symbols are assigned, then the same number of
        levels of significance must be specified using alpha( ).

    asterisk( ) specifies asterisks to be placed next to them; default stats(coef).

    noaster no asterisks denoting statistical significance levels be reported.

    2aster specifies ** for 1% and * for 5%

    10pct equivalent to symbol(**, *, +)