Hey everyone,
I want to conduct a mediation effects in my research and my indirect effect say "constrained". So, is not giving me any output for p-value etc.
I am new in stata and dont know how to handle this "constrained" issue. Can anyone explain me the "constrained" issue and how to interpret it respectively what to do now.
. sem (cvcie1 -> cum_ccit, ) (cvcie1 -> tq, ) (cum_ccit -> tq, ), nocapslatent
(589 observations with missing values excluded)
Endogenous variables
Observed: cum_ccit tq
Exogenous variables
Observed: cvcie1
Fitting target model:
Iteration 0: log likelihood = -2513.857
Iteration 1: log likelihood = -2513.857
Structural equation model Number of obs = 84
Estimation method: ml
Log likelihood = -2513.857
--------------------------------------------------------------------------------
| OIM
| Coefficient std. err. z P>|z| [95% conf. interval]
---------------+----------------------------------------------------------------
Structural |
cum_ccit |
cvcie1 | 8.16e-06 .0000234 0.35 0.727 -.0000377 .000054
_cons | 4348.269 801.6528 5.42 0.000 2777.058 5919.479
-------------+----------------------------------------------------------------
tq |
cum_ccit | .0001015 .0000176 5.78 0.000 .0000671 .0001359
cvcie1 | -4.24e-09 3.77e-09 -1.13 0.260 -1.16e-08 3.14e-09
_cons | 1.28476 .1499089 8.57 0.000 .9909438 1.578576
---------------+----------------------------------------------------------------
var(e.cum_ccit)| 3.28e+07 5055867 2.42e+07 4.43e+07
var(e.tq)| .8485699 .1309372 .6271109 1.148235
--------------------------------------------------------------------------------
Note: The LR test of model vs. saturated is not reported because the fitted
model is not full rank.
.
. estat teffects
Direct effects
------------------------------------------------------------------------------
| OIM
| Coefficient std. err. z P>|z| [95% conf. interval]
-------------+----------------------------------------------------------------
Structural |
cum_ccit |
cvcie1 | 8.16e-06 .0000234 0.35 0.727 -.0000377 .000054
-----------+----------------------------------------------------------------
tq |
cum_ccit | .0001015 .0000176 5.78 0.000 .0000671 .0001359
cvcie1 | -4.24e-09 3.77e-09 -1.13 0.260 -1.16e-08 3.14e-09
------------------------------------------------------------------------------
Indirect effects
------------------------------------------------------------------------------
| OIM
| Coefficient std. err. z P>|z| [95% conf. interval]
-------------+----------------------------------------------------------------
Structural |
cum_ccit |
cvcie1 | 0 (no path)
-----------+----------------------------------------------------------------
tq |
cum_ccit | 0 (no path)
cvcie1 | 8.28e-10 (constrained)
------------------------------------------------------------------------------
Total effects
------------------------------------------------------------------------------
| OIM
| Coefficient std. err. z P>|z| [95% conf. interval]
-------------+----------------------------------------------------------------
Structural |
cum_ccit |
cvcie1 | 8.16e-06 .0000234 0.35 0.727 -.0000377 .000054
-----------+----------------------------------------------------------------
tq |
cum_ccit | .0001015 .0000176 5.78 0.000 .0000671 .0001359
cvcie1 | -3.41e-09 (constrained)
------------------------------------------------------------------------------
Sry i am not able to use dataex, so i have to show it you this way.
Thanks in advance.
Kind regards
Jana
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