请教一下楼主 logistic model下的 Wald test命令如何实现啊？谢谢了！

Title

    [R] logit postestimation -- Postestimation tools for logit


Description

    The following postestimation commands are of special interest after logit:

    Command               Description
    ------------------------------------------------------------------------------------------------------
    estat classification  report various summary statistics, including the classification table
    estat gof             Pearson or Hosmer-Lemeshow goodness-of-fit test
    lroc                  compute area under ROC curve and graph the curve
    lsens                 graph sensitivity and specificity versus probability cutoff
    ------------------------------------------------------------------------------------------------------
    These commands are not appropriate after the svy prefix.

    The following standard postestimation commands are also available:

    Command           Description
    ------------------------------------------------------------------------------------------------------
        contrast      contrasts and ANOVA-style joint tests of estimates
        estat         AIC, BIC, VCE, and estimation sample summary
        estat (svy)   postestimation statistics for survey data
        estimates     cataloging estimation results
        lincom        point estimates, standard errors, testing, and inference for linear combinations of
                        coefficients
        linktest      link test for model specification
    (1) lrtest        likelihood-ratio test
        margins       marginal means, predictive margins, marginal effects, and average marginal effects
        marginsplot   graph the results from margins (profile plots, interaction plots, etc.)
        nlcom         point estimates, standard errors, testing, and inference for nonlinear combinations
                        of coefficients
        predict       predictions, residuals, influence statistics, and other diagnostic measures
        predictnl     point estimates, standard errors, testing, and inference for generalized predictions
        pwcompare     pairwise comparisons of estimates
        suest         seemingly unrelated estimation
        test          Wald tests of simple and composite linear hypotheses
        testnl        Wald tests of nonlinear hypotheses
    ------------------------------------------------------------------------------------------------------

wald test ==