Dear Stata users,
> I run a regression. but the results show that for some variables there are
> only the estimates; the standard errors and t-stat are dots. here is the
> result.
> ------------------------------------------------------------------------------
> trqfill | Coef. Std. Err. z P>|z| [95% Conf.
> Interval]
> -------------+----------------------------------------------------------------
> ibaseadeq | -.0000649 . . . .
> .
> obaseadeq | .0000436 .0000144 3.03 0.002 .0000154
> .0000718
> reg2 | -.7753061 . . . .
> .
> reg3 | .0897025 .1764089 0.51 0.611 -.2560526
> .4354576
> reg4 | .1975734 .1044786 1.89 0.059 -.0072009
> .4023477
> reg5 | -.7981209 .0852665 -9.36 0.000 -.9652401
> -.6310017
> reg6 | -.5694725 .081311 -7.00 0.000 -.728839
> -.4101059
> reg8 | .0085505 .1567197 0.05 0.956 -.2986144
> .3157153
> reg9 | -.2778602 .1279215 -2.17 0.030 -.5285816
> -.0271387
> adc1 | .7499405 .1172732 6.39 0.000 .5200894
> .9797917
> adc3 | 4.01991 155546.6 0.00 1.000 -304861.6
> 304869.7
> adc4 | -.0662804 .0885973 -0.75 0.454 -.239928
> .1073672
> usdkg | .0009089 .0031272 0.29 0.771 -.0052204
> .0070381
> ER | -.0001415 .0000726 -1.95 0.051 -.0002838
> 8.24e-07
> _cons | 1.208677 .0535968 22.55 0.000 1.103629
> 1.313724
> -------------+----------------------------------------------------------------
> /sigma_u | .6893885 .0264021 26.11 0.000 .6376414
> .7411356
> /sigma_e | .4345091 .0113336 38.34 0.000 .4122957
> .4567225
> -------------+----------------------------------------------------------------
> rho | .7156888 .0152034 .6851716
> .744716
> ------------------------------------------------------------------------------
>
> another problem is that sometimes the standard errors are extremely large,
> for example, 2,000, and the p-value is almost 1. could you tell me why i
> could get these kinds of results and what is going on behind estimating ?
> thanks a lot!
>
> Jian Zhang
>
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