z********n
发帖数: 710 | 1 用proc surveylogistic 出来的结果里面
wald confidence limits 的区间很大：
for instance:
point estimate
3.31
95% wald confidence limits:
0.514 - 21.300
这种情况是不是sample size太小的缘故呢?非常感谢！ |
z********n
发帖数: 710 | 2 no one knows?
Please help out leh! |
q**j
发帖数: 10612 | 3 from my distant memory the test depends upon the null hypothesis and the
functional form, ie, the variance could vary if the null varies, that is the
reason that many people do not like it much. not sure if it is ture for
your case. |
s*****h
发帖数: 232 | 4 could be small sample size.
if you have other variables in the model and this variable is correlated
with another variable. it also could cause the smaller standard error and
wide confidence intervals.
【在 z********n 的大作中提到】
: 用proc surveylogistic 出来的结果里面
: wald confidence limits 的区间很大：
: for instance:
: point estimate
: 3.31
: 95% wald confidence limits:
: 0.514 - 21.300
: 这种情况是不是sample size太小的缘故呢?非常感谢！
|
z********n
发帖数: 710 | 5 To qqzi,
Thank you for your reply. I think what you talked about reminds me of
something similar. I really appreciate that.
Thanks again. |
t**i
发帖数: 688 | 6 Why smaller stderr would lead to wider conf. int.? I think it should be the
other way around.
【在 s*****h 的大作中提到】
: could be small sample size.
: if you have other variables in the model and this variable is correlated
: with another variable. it also could cause the smaller standard error and
: wide confidence intervals.
|
s*****h
发帖数: 232 | 7 sorry, should be big standard error.
the
【在 t**i 的大作中提到】
: Why smaller stderr would lead to wider conf. int.? I think it should be the
: other way around.
|
