[Limdep Nlogit List] Marginal effects in ordered probit

William Greene wgreene at stern.nyu.edu
Wed Jun 18 23:02:51 EST 2008


Fredrik: Try adding ;ALL to the command.
/Bill Greene

----- Original Message -----
From: "Fredrik Carlsson" <Fredrik.Carlsson at economics.gu.se>
To: "Limdep and Nlogit Mailing List" <limdep at limdep.itls.usyd.edu.au>
Sent: Wednesday, June 18, 2008 7:49:39 AM (GMT-0500) America/Bogota
Subject: [Limdep Nlogit List] Marginal effects in ordered probit

With the new version of limdep I seem to not get the details for the marginal effects, only the summary (and hence not the p-values). Anyone knows what I'm doing wrong?

So this command: ordered;lhs=oq38a; rhs=x;Marginal Effects$


Gives this output only
Normal exit from iterations. Exit status=0.
+---------------------------------------------+
| Ordered Probability Model                   |
| Maximum Likelihood Estimates                |
| Model estimated: Jun 18, 2008 at 02:48:42PM.|
| Dependent variable                OQ38A     |
| Weighting variable                 None     |
| Number of observations              885     |
| Iterations completed                 26     |
| Log likelihood function       -710.5927     |
| Number of parameters                 21     |
| Info. Criterion: AIC =          1.65332     |
|   Finite Sample: AIC =          1.65453     |
| Info. Criterion: BIC =          1.76687     |
| Info. Criterion:HQIC =          1.69673     |
| Restricted log likelihood     -760.3851     |
| McFadden Pseudo R-squared      .0654831     |
| Chi squared                    99.58478     |
| Degrees of freedom                   18     |
| Prob[ChiSqd > value] =         .0000000     |
| Underlying probabilities based on Normal    |
+---------------------------------------------+

+---------------------------------------------+
| Ordered Probability Model                   |
| Cell frequencies for outcomes               |
|  Y Count Freq  Y Count Freq  Y Count Freq   |
|  0    17 .019  1    43 .048  2   249 .281   |
|  3   576 .650                               |
+---------------------------------------------+
+--------+--------------+----------------+--------+--------+----------+
|Variable| Coefficient  | Standard Error |b/St.Er.|P[|Z|>z]| Mean of X|
+--------+--------------+----------------+--------+--------+----------+
---------+Index function for probability
 Constant|    1.92104164       .19543673     9.829   .0000
 AGEG2   |     .02077632       .12822090      .162   .8713    .29265537
 AGEG3   |     .20022378       .12108471     1.654   .0982    .30960452
 AGEG4   |     .40176336       .15057344     2.668   .0076    .18531073
 WOMEN   |     .21001712       .08650375     2.428   .0152    .54463277
 BARN    |    -.04539165       .10763824     -.422   .6732    .37514124
 GYMN    |     .06094490       .12768786      .477   .6332    .38870056
 UNIV    |     .26692592       .13264362     2.012   .0442    .44519774
 EQINCOME|    -.02077273       .03598516     -.577   .5638   1.43041997
 RELIG   |     .08244915       .11743920      .702   .4826    .17288136
 LANDET  |     .00153036       .10120428      .015   .9879    .32203390
 STORSTAD|    -.15628777       .10604985    -1.474   .1406    .26214689
 SAP     |     .16509654       .13773242     1.199   .2307    .24745763
 CENTER  |    -.07271455       .14447756     -.503   .6148    .19322034
 M       |     .44425278       .15550443     2.857   .0043    .18531073
 OTHERP  |     .62760474       .28400864     2.210   .0271    .03389831
 BLANK   |    -.89043024       .18427980    -4.832   .0000    .06327684
 NOOPIN  |    -.32045733       .15616310    -2.052   .0402    .11638418
 NOTVOTE |     .01728707       .54336030      .032   .9746    .00677966
---------+Threshold parameters for index
 Mu(1)   |     .66302773       .06087258    10.892   .0000
 Mu(2)   |    1.87502803       .07035728    26.650   .0000

+-------------------------------------------------------------------------+
| Summary of Marginal Effects for Ordered Probability Model (probit)      |
+-------------------------------------------------------------------------+
Variable|    Y=00    Y=01    Y=02    Y=03    Y=04    Y=05    Y=06    Y=07 |
--------------------------------------------------------------------------+
*AGEG2     -.0006  -.0016  -.0054   .0076
*AGEG3     -.0054  -.0148  -.0520   .0722
*AGEG4     -.0091  -.0262  -.1029   .1382
*WOMEN     -.0063  -.0166  -.0543   .0772
*BARN       .0014   .0036   .0118  -.0167
*GYMN      -.0018  -.0047  -.0158   .0223
*UNIV      -.0077  -.0204  -.0690   .0971
EQINCOME    .0006   .0016   .0054  -.0076
*RELIG     -.0023  -.0062  -.0214   .0299
*LANDET     .0000  -.0001  -.0004   .0006
*STORSTA    .0050   .0128   .0403  -.0581
*SAP       -.0044  -.0121  -.0429   .0594
*CENTER     .0022   .0058   .0188  -.0269
*M         -.0098  -.0285  -.1133   .1516
*OTHERP    -.0099  -.0319  -.1522   .1941
*BLANK      .0639   .1050   .1749  -.3438
*NOOPIN     .0126   .0293   .0804  -.1222
*NOTVOTE   -.0005  -.0013  -.0045   .0063
+---------------------------------------------------------------------------+
|   Cross tabulation of predictions. Row is actual, column is predicted.    |
|   Model = Probit    .  Prediction is number of the most probable cell.    |
+-------+-------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
| Actual|Row Sum|  0  |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |
+-------+-------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|      0|     17|    0|    0|   10|    7|
|      1|     43|    0|    0|   10|   33|
|      2|    249|    0|    0|   30|  219|
|      3|    576|    0|    0|   24|  552|
+-------+-------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|Col Sum|    885|    0|    0|   74|  811|    0|    0|    0|    0|    0|    0|
+-------+-------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+

Fredrik Carlsson
Professor
Department of Economics, University of Gothenburg
Box 640, SE-405 40 Gothenburg, Sweden
Tel: +46 31 7864174
Fax: +46 31 7861043
Mobile: +46 0709 267 097
Home page:
http://www.handels.gu.se/econ/fredrik.carlsson/

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-- 
Professor William Greene
Department of Economics
Stern School of Business
New York University
44 West 4th St., Rm. 7-78
New York, NY   10012
http://www.stern.nyu.edu/~wgreene
212.998.0876




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