# st: interpretation of bootstrapping result

 From [email protected] To [email protected] Subject st: interpretation of bootstrapping result Date Thu, 15 May 2003 16:35:07 +0100

Dear statalists,

I just run bootstrapping for my coefficients of regression and got the results as follows:

Variable | Reps Observed Bias Std. Err. [95% Conf. Interval]
---------+-----------------------------------------------------------------
--
bs1 | 200 .0037827 -.000335 .0036182 -.0033523 .0109177 (N)
| -.0037102 .0104219 (P)
| -.0029205 .0113986 (BC)
---------+-----------------------------------------------------------------
--
bs2 | 200 -.1091335 .0024272 .021065 -.1506728 -.0675942 (N)
| -.1466001 -.0656316 (P)
| -.1517392 -.0740445 (BC)
---------+-----------------------------------------------------------------
--
bs3 | 200 -.0086041 -.0000534 .00132 -.011207 -.0060012 (N)
| -.0110895 -.0060097 (P)
| -.0109498 -.0059262 (BC)
---------+-----------------------------------------------------------------
--
bs4 | 200 .0023443 -.000128 .0085143 -.0144455 .0191341 (N)
| -.0120193 .020702 (P)
| -.0103417 .0220362 (BC)
---------+-----------------------------------------------------------------
--
bs5 | 200 -.207383 -.001442 .0112451 -.2295578 -.1852083 (N)
| -.2341348 -.1875057 (P)
| -.2337589 -.1869056 (BC)
---------------------------------------------------------------------------
--
N = normal, P = percentile, BC = bias-corrected

On the results, what does it mean bias? When I report the confidence interval, Do I have to report
BC(bias-corrected) or just Normal? I really appreciate if anybody comment on this. Thanks in advance.

Hanseung Kum *
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