{"id":1938,"date":"2020-03-04T09:08:17","date_gmt":"2020-03-04T09:08:17","guid":{"rendered":"https:\/\/bschool.nus.edu.sg\/dean\/?p=1938"},"modified":"2020-03-04T09:08:17","modified_gmt":"2020-03-04T09:08:17","slug":"metalog","status":"publish","type":"post","link":"https:\/\/bschool.nus.edu.sg\/dean\/2020\/03\/04\/metalog\/","title":{"rendered":"Metalog"},"content":{"rendered":"<pre>-------------------------------------------------------------------------------\r\n\r\n       log:  C:\\Res\\Meta\\progs\\p1.log\r\n\r\n  log type:  text\r\n\r\n opened on:   6 Apr 2002, 13:19:21\r\n\r\n \r\n\r\n. *\r\n\r\n. * This STATA program produces some standard meta-analysis.\r\n\r\n. *\r\n\r\n. set more 1\r\n\r\n \r\n\r\n. *\r\n\r\n. * Read in, manipulate and summarize the data set\r\n\r\n. *\r\n\r\n. use \\res\\meta\\data\\data1\r\n\r\n \r\n\r\n. g studyn=_n\r\n\r\n \r\n\r\n. label var studyn \"Study Number\"\r\n\r\n \r\n\r\n. g tratio=gamma\/segamma\r\n\r\n \r\n\r\n. label var tratio \"t-statistic for gamma\"\r\n\r\n \r\n\r\n. g pgamma=ttail(obs,tratio)\r\n\r\n \r\n\r\n. label var pgamma \"P-value for gamma\"\r\n\r\n \r\n\r\n. replace pgamma=1.e-20 if pgamma==0.\r\n\r\n(3 real changes made)\r\n\r\n \r\n\r\n. list author studyn gamma segamma\r\n\r\n \r\n\r\n                              author     studyn      gamma    segamma\r\n\r\n  1.                            Rose          1       1.21        .14\r\n\r\n  2.                      Engel-Rose          2       1.21        .37\r\n\r\n  3.                    Frankel-Rose          3       1.36        .18\r\n\r\n  4.                Rose-van Wincoop          4        .91        .18\r\n\r\n  5.                      Glick-Rose          5        .65        .05\r\n\r\n  6.                         Persson          6       .506       .257\r\n\r\n  7.                            Rose          7        .74        .05\r\n\r\n  8.                         Honohan          8       .921         .4\r\n\r\n  9.                          Nitsch          9        .82        .27\r\n\r\n 10.                      Pakko-Wall         10      -.378       .529\r\n\r\n 11.                      Walsh-Thom         11       .098       .196\r\n\r\n 12.                          Melitz         12         .7        .23\r\n\r\n 13.      Lopez-Cordova and Meissner         13       .716       .186\r\n\r\n 14.                Silvana Tenreyro         14       .471       .316\r\n\r\n 15.                     Levy Yeyati         15         .5        .25\r\n\r\n 16.                          Nitsch         16        .62        .17\r\n\r\n 17.            Flandreau and Maurel         17       1.16        .07\r\n\r\n 18.                           Klein         18         .5        .27\r\n\r\n 19. Estevadeoral, Frantz and Taylor         19       .293       .145\r\n\r\n \r\n\r\n. d\r\n\r\n \r\n\r\nContains data from \\res\\meta\\data\\data1.dta\r\n\r\n  obs:            19                         \r\n\r\n vars:            22                          26 Feb 2002 08:00\r\n\r\n size:         2,242 (95.0% of memory free)\r\n\r\n-------------------------------------------------------------------------------\r\n\r\n              storage  display     value\r\n\r\nvariable name   type   format      label      variable label\r\n\r\n-------------------------------------------------------------------------------\r\n\r\nauthor          str31  %31s                   Author\r\n\r\npubn            str20  %20s                   Publication Venue\r\n\r\nprefer          float  %9.0g                  Preferred\/Best (Verbal) Estimate\r\n\r\ngamma           float  %9.0g                  Quantitative Estimate\r\n\r\nsegamma         float  %9.0g                  Standard Error of gamma\r\n\r\nobs             float  %9.0g                  No. Observations\r\n\r\nnonts           byte   %9.0g                  1 for c\/s or panel (with N&gt;&gt;T)\r\n\r\n                                                studies\r\n\r\nnocountries     int    %9.0g                  Span of Countries\r\n\r\nnoyears         byte   %9.0g                  Span of Years\r\n\r\npostwar         byte   %9.0g                  1 for post-WW2\r\n\r\nroseauth        byte   %9.0g                  1 if Rose is co-author\r\n\r\nmeanwithin      float  %9.0g                  Mean of within study estimates\r\n\r\nsdwithin        float  %9.0g                  S.D. of within study estimates\r\n\r\nmedwithin       float  %9.0g                  Median of within study estimates\r\n\r\nminwithin       float  %9.0g                  Min of within study estimates\r\n\r\nmaxwithin       float  %9.0g                  Max of within study estimates\r\n\r\ncountwithin     byte   %9.0g                  Number of within study estimates\r\n\r\ntrimmax         float  %9.0g                  Trimmed Max of within study\r\n\r\n                                                estimates\r\n\r\ntrimmin         float  %9.0g                  Trimmed Min of within study\r\n\r\n                                                estimates\r\n\r\nstudyn          float  %9.0g                  Study Number\r\n\r\ntratio          float  %9.0g                  t-statistic for gamma\r\n\r\npgamma          float  %9.0g                  P-value for gamma\r\n\r\n-------------------------------------------------------------------------------\r\n\r\nSorted by: \r\n\r\n     Note:  dataset has changed since last saved\r\n\r\n \r\n\r\n. sum\r\n\r\n \r\n\r\n    Variable |     Obs        Mean   Std. Dev.       Min        Max\r\n\r\n-------------+-----------------------------------------------------\r\n\r\n      author |       0\r\n\r\n        pubn |       0\r\n\r\n      prefer |      19    .9410526   .6867872          0          2\r\n\r\n       gamma |      19     .684579   .4177448      -.378       1.36\r\n\r\n     segamma |      19    .2241579    .121654        .05       .529\r\n\r\n         obs |      19    33448.79   66535.88        190     219558\r\n\r\n       nonts |      19    .8421053   .3746343          0          1\r\n\r\n nocountries |      19    132.0526   78.52705         16        217\r\n\r\n     noyears |      19    22.42105   15.43559          1         50\r\n\r\n     postwar |      19    .8421053   .3746343          0          1\r\n\r\n    roseauth |      19    .3157895   .4775669          0          1\r\n\r\n  meanwithin |      19    1.010764   .8582899   .1025714   3.902115\r\n\r\n    sdwithin |      19    .2412389   .3945224   .0589924   1.831724\r\n\r\n   medwithin |      19    .8299211   .5010568       -.01       1.97\r\n\r\n   minwithin |      19    .0561579    .847103      -1.53       1.45\r\n\r\n   maxwithin |      19    6.221421   18.62448        .69         83\r\n\r\n countwithin |      19    20.15789    20.9079          4         83\r\n\r\n     trimmax |      19    1.815211   1.037545        .69       5.44\r\n\r\n     trimmin |      19    .2118421    .773086       -1.5       1.45\r\n\r\n      studyn |      19          10   5.627314          1         19\r\n\r\n      tratio |      19    4.941714   4.927131  -.7145558   16.57143\r\n\r\n      pgamma |      19    .0660508   .1827615   1.00e-20   .7625544\r\n\r\n \r\n\r\n. *\r\n\r\n. * Perform the meta-analysis\r\n\r\n. *\r\n\r\n. metap pgamma, method(f)\r\n\r\n \r\n\r\nMeta-analysis of p-values\r\n\r\n \r\n\r\n--------------------------------------------------------------\r\n\r\n Method               |   chi2         p_value      studies\r\n\r\n----------------------+---------------------------------------\r\n\r\n Fisher               |   576.56428    1.990e-97    19\r\n\r\n--------------------------------------------------------------\r\n\r\n \r\n\r\n. metap pgamma, method(ea)\r\n\r\n \r\n\r\nMeta-analysis of p_values\r\n\r\n \r\n\r\n--------------------------------------------------------------\r\n\r\n Method               |   .            p_value      studies\r\n\r\n----------------------+---------------------------------------\r\n\r\n Edgington, additive  |   .            6.150e-16    19\r\n\r\n--------------------------------------------------------------\r\n\r\n \r\n\r\n. meta gamma segamma\r\n\r\n \r\n\r\nMeta-analysis\r\n\r\n \r\n\r\n       |  Pooled      95% CI         Asymptotic      No. of\r\n\r\nMethod |     Est   Lower   Upper  z_value  p_value   studies\r\n\r\n-------+----------------------------------------------------\r\n\r\nFixed  |   0.772   0.718   0.825   28.437    0.000     19\r\n\r\nRandom |   0.730   0.580   0.881    9.493    0.000\r\n\r\n \r\n\r\nTest for heterogeneity: Q= 92.334 on 18 degrees of freedom (p= 0.000)\r\n\r\nMoment-based estimate of between studies variance =  0.069\r\n\r\n \r\n\r\n. metainf gamma segamma, id(studyn) print\r\n\r\n \r\n\r\n \r\n\r\n------------------------------------------------------------------------------\r\n\r\n Study ommited     |   Coef.          [95%  Conf.  Interval]\r\n\r\n-------------------+----------------------------------------------------------\r\n\r\n 1                 |   .75439388      .70019108    .80859673\r\n\r\n 2                 |   .76913375      .71581489    .8224526\r\n\r\n 3                 |   .75782365      .70403385    .8116135\r\n\r\n 4                 |   .76828462      .71449482    .82207447\r\n\r\n 5                 |   .82220739      .75890207    .88551271\r\n\r\n 6                 |   .77449644      .72102231    .8279705\r\n\r\n 7                 |   .78465074      .72134542    .84795606\r\n\r\n 8                 |   .77081323      .71751523    .82411128\r\n\r\n 9                 |   .7710095       .71756369    .82445532\r\n\r\n 10                |   .77453578      .72129035    .82778114\r\n\r\n 11                |   .78466111      .73096889    .83835328\r\n\r\n 12                |   .77251315      .71896398    .82606232\r\n\r\n 13                |   .7727108       .71896058    .82646096\r\n\r\n 14                |   .77373576      .72036338    .82710814\r\n\r\n 15                |   .77473986      .72124863    .8282311\r\n\r\n 16                |   .77546382      .72159809    .82932949\r\n\r\n 17                |   .70282781      .64514363    .76051193\r\n\r\n 18                |   .77427357      .72082776    .82771933\r\n\r\n 19                |   .7888642       .73473293    .84299552\r\n\r\n-------------------+----------------------------------------------------------\r\n\r\n Combined          |   .77150418      .71832888    .82467948\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. metareg gamma obs, wsse(segamma)\r\n\r\nIteration 1: tau^2 = 0\r\n\r\nIteration 2: tau^2 = .01409318\r\n\r\nIteration 3: tau^2 = .07512375\r\n\r\nIteration 4: tau^2 = .09770425\r\n\r\n \r\n\r\nMeta-analysis regression                               No of studies =   19\r\n\r\n                                                       tau^2 method      reml\r\n\r\n                                                       tau^2 estimate =  .0978\r\n\r\n \r\n\r\nSuccessive values of tau^2 differ by less than 10^-4 :convergence achieved\r\n\r\n------------------------------------------------------------------------------\r\n\r\n             |      Coef.   Std. Err.      z    P&gt;|z|     [95% Conf. Interval]\r\n\r\n-------------+----------------------------------------------------------------\r\n\r\n         obs |   4.48e-08   1.16e-06     0.04   0.969    -2.22e-06    2.31e-06\r\n\r\n       _cons |   .7222008   .1004021     7.19   0.000     .5254162    .9189853\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. metareg gamma segamma, wsse(segamma)\r\n\r\nIteration 1: tau^2 = 0\r\n\r\nIteration 2: tau^2 = .03010489\r\n\r\nIteration 3: tau^2 = .08777508\r\n\r\nIteration 4: tau^2 = .09033508\r\n\r\n \r\n\r\nMeta-analysis regression                               No of studies =   19\r\n\r\n                                                       tau^2 method      reml\r\n\r\n                                                       tau^2 estimate =  .0903\r\n\r\n \r\n\r\nSuccessive values of tau^2 differ by less than 10^-4 :convergence achieved\r\n\r\n------------------------------------------------------------------------------\r\n\r\n             |      Coef.   Std. Err.      z    P&gt;|z|     [95% Conf. Interval]\r\n\r\n-------------+----------------------------------------------------------------\r\n\r\n     segamma |  -.9933213    .823494    -1.21   0.228     -2.60734    .6206972\r\n\r\n       _cons |   .9130875   .1771052     5.16   0.000     .5659677    1.260207\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. metareg gamma roseauth, wsse(segamma)\r\n\r\nIteration 1: tau^2 = 0\r\n\r\nIteration 2: tau^2 = .02397665\r\n\r\nIteration 3: tau^2 = .09391623\r\n\r\nIteration 4: tau^2 = .07073589\r\n\r\nIteration 5: tau^2 = .0759793\r\n\r\nIteration 6: tau^2 = .0746044\r\n\r\nIteration 7: tau^2 = .07495284\r\n\r\n \r\n\r\nMeta-analysis regression                               No of studies =   19\r\n\r\n                                                       tau^2 method      reml\r\n\r\n                                                       tau^2 estimate =  .0749\r\n\r\n \r\n\r\nSuccessive values of tau^2 differ by less than 10^-4 :convergence achieved\r\n\r\n------------------------------------------------------------------------------\r\n\r\n             |      Coef.   Std. Err.      z    P&gt;|z|     [95% Conf. Interval]\r\n\r\n-------------+----------------------------------------------------------------\r\n\r\n    roseauth |   .3770075   .1637407     2.30   0.021     .0560817    .6979334\r\n\r\n       _cons |   .5869939   .1004502     5.84   0.000     .3901151    .7838727\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. metareg gamma nonts, wsse(segamma)\r\n\r\nIteration 1: tau^2 = 0\r\n\r\nIteration 2: tau^2 = .01140247\r\n\r\nIteration 3: tau^2 = .05984409\r\n\r\nIteration 4: tau^2 = .08546313\r\n\r\nIteration 5: tau^2 = .08589089\r\n\r\n \r\n\r\nMeta-analysis regression                               No of studies =   19\r\n\r\n                                                       tau^2 method      reml\r\n\r\n                                                       tau^2 estimate =  .0859\r\n\r\n \r\n\r\nSuccessive values of tau^2 differ by less than 10^-4 :convergence achieved\r\n\r\n------------------------------------------------------------------------------\r\n\r\n             |      Coef.   Std. Err.      z    P&gt;|z|     [95% Conf. Interval]\r\n\r\n-------------+----------------------------------------------------------------\r\n\r\n       nonts |   .2387602   .2034955     1.17   0.241    -.1600836    .6376041\r\n\r\n       _cons |   .5384158   .1805667     2.98   0.003     .1845115    .8923201\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. metareg gamma nocountries, wsse(segamma)\r\n\r\nIteration 1: tau^2 = 0\r\n\r\nIteration 2: tau^2 = .01458143\r\n\r\nIteration 3: tau^2 = .08299151\r\n\r\nIteration 4: tau^2 = .09447728\r\n\r\nIteration 5: tau^2 = .09421696\r\n\r\n \r\n\r\nMeta-analysis regression                               No of studies =   19\r\n\r\n                                                       tau^2 method      reml\r\n\r\n                                                       tau^2 estimate =  .0942\r\n\r\n \r\n\r\nSuccessive values of tau^2 differ by less than 10^-4 :convergence achieved\r\n\r\n------------------------------------------------------------------------------\r\n\r\n             |      Coef.   Std. Err.      z    P&gt;|z|     [95% Conf. Interval]\r\n\r\n-------------+----------------------------------------------------------------\r\n\r\n nocountries |   .0006362   .0010878     0.58   0.559    -.0014958    .0027682\r\n\r\n       _cons |   .6421511   .1654251     3.88   0.000     .3179239    .9663784\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. metareg gamma noyears, wsse(segamma)\r\n\r\nIteration 1: tau^2 = 0\r\n\r\nIteration 2: tau^2 = .02269689\r\n\r\nIteration 3: tau^2 = .08865432\r\n\r\nIteration 4: tau^2 = .0978047\r\n\r\n \r\n\r\nMeta-analysis regression                               No of studies =   19\r\n\r\n                                                       tau^2 method      reml\r\n\r\n                                                       tau^2 estimate =  .0977\r\n\r\n \r\n\r\nSuccessive values of tau^2 differ by less than 10^-4 :convergence achieved\r\n\r\n------------------------------------------------------------------------------\r\n\r\n             |      Coef.   Std. Err.      z    P&gt;|z|     [95% Conf. Interval]\r\n\r\n-------------+----------------------------------------------------------------\r\n\r\n     noyears |  -.0021466   .0056191    -0.38   0.702    -.0131599    .0088667\r\n\r\n       _cons |   .7778385   .1654519     4.70   0.000     .4535587    1.102118\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. metareg gamma postwar, wsse(segamma)\r\n\r\nIteration 1: tau^2 = 0\r\n\r\nIteration 2: tau^2 = .01098566\r\n\r\nIteration 3: tau^2 = .06575411\r\n\r\nIteration 4: tau^2 = .09711704\r\n\r\nIteration 5: tau^2 = .09749058\r\n\r\n \r\n\r\nMeta-analysis regression                               No of studies =   19\r\n\r\n                                                       tau^2 method      reml\r\n\r\n                                                       tau^2 estimate =  .0975\r\n\r\n \r\n\r\nSuccessive values of tau^2 differ by less than 10^-4 :convergence achieved\r\n\r\n------------------------------------------------------------------------------\r\n\r\n             |      Coef.   Std. Err.      z    P&gt;|z|     [95% Conf. Interval]\r\n\r\n-------------+----------------------------------------------------------------\r\n\r\n     postwar |  -.0268468   .2196513    -0.12   0.903    -.4573554    .4036619\r\n\r\n       _cons |   .7457645   .1969708     3.79   0.000     .3597089     1.13182\r\n\r\n------------------------------------------------------------------------------\r\n\r\n \r\n\r\n. *\r\n\r\n. * Ditto but drop my observations\r\n\r\n. *\r\n\r\n. drop if roseauth==1\r\n\r\n(6 observations deleted)\r\n\r\n \r\n\r\n. sum\r\n\r\n \r\n\r\n    Variable |     Obs        Mean   Std. Dev.       Min        Max\r\n\r\n-------------+-----------------------------------------------------\r\n\r\n      author |       0\r\n\r\n        pubn |       0\r\n\r\n      prefer |      13    .7146154   .5992581          0          2\r\n\r\n       gamma |      13    .5328462   .3849768      -.378       1.16\r\n\r\n     segamma |      13        .253   .1164281        .07       .529\r\n\r\n         obs |      13    9024.077   11323.33        190      31010\r\n\r\n       nonts |      13    .9230769   .2773501          0          1\r\n\r\n nocountries |      13    107.6923   82.72886         16        205\r\n\r\n     noyears |      13    20.76923   13.24861          1         42\r\n\r\n     postwar |      13    .7692308    .438529          0          1\r\n\r\n    roseauth |      13           0          0          0          0\r\n\r\n  meanwithin |      13    .7440238   .5284827   .1025714   1.923333\r\n\r\n    sdwithin |      13    .1662512   .0984865   .0589924   .4654206\r\n\r\n   medwithin |      13       .6945   .5040675       -.01       1.97\r\n\r\n   minwithin |      13   -.1786923   .8489415      -1.53       1.45\r\n\r\n   maxwithin |      13    1.952077   1.312218        .69       5.73\r\n\r\n countwithin |      13    19.15385   22.51609          4         83\r\n\r\n     trimmax |      13    1.819154   1.236521        .69       5.44\r\n\r\n     trimmin |      13       -.045     .77003       -1.5       1.45\r\n\r\n      studyn |      13    12.92308   4.030334          6         19\r\n\r\n      tratio |      13    3.197564   4.202909  -.7145558   16.57143\r\n\r\n      pgamma |      13    .0964941   .2166176   1.00e-20   .7625544\r\n\r\n \r\n\r\n. metap pgamma, method(f)\r\n\r\n \r\n\r\nMeta-analysis of p-values\r\n\r\n \r\n\r\n--------------------------------------------------------------\r\n\r\n Method               |   chi2         p_value      studies\r\n\r\n----------------------+---------------------------------------\r\n\r\n Fisher               |   202.92169    2.429e-29    13\r\n\r\n--------------------------------------------------------------\r\n\r\n \r\n\r\n. metap pgamma, method(ea)\r\n\r\n \r\n\r\nMeta-analysis of p_values\r\n\r\n \r\n\r\n--------------------------------------------------------------\r\n\r\n Method               |   .            p_value      studies\r\n\r\n----------------------+---------------------------------------\r\n\r\n Edgington, additive  |   .            3.058e-09    13\r\n\r\n--------------------------------------------------------------\r\n\r\n \r\n\r\n. meta gamma segamma\r\n\r\n \r\n\r\nMeta-analysis\r\n\r\n \r\n\r\n       |  Pooled      95% CI         Asymptotic      No. of\r\n\r\nMethod |     Est   Lower   Upper  z_value  p_value   studies\r\n\r\n-------+----------------------------------------------------\r\n\r\nFixed  |   0.802   0.708   0.895   16.785    0.000     13\r\n\r\nRandom |   0.571   0.318   0.825    4.416    0.000\r\n\r\n \r\n\r\nTest for heterogeneity: Q= 63.139 on 12 degrees of freedom (p= 0.000)\r\n\r\nMoment-based estimate of between studies variance =  0.155\r\n\r\n \r\n\r\n. *\r\n\r\n. * Clean up and Close down\r\n\r\n. *\r\n\r\n. drop _all\r\n\r\n \r\n\r\n. log close\r\n\r\n       log:  C:\\Res\\Meta\\progs\\p1.log\r\n\r\n  log type:  text\r\n\r\n closed on:   6 Apr 2002, 13:19:25\r\n\r\n-------------------------------------------------------------------------------\r\n\r\n \r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;- log: C:\\Res\\Meta\\progs\\p1.log log type: text opened on: 6 Apr 2002, 13:19:21 . * . * This STATA program produces some standard meta-analysis. . * . set more 1 . * . * Read in, manipulate and summarize the data set . * . use \\res\\meta\\data\\data1 . g studyn=_n . label var studyn &#8220;Study Number&#8221; [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_oasis_is_in_workflow":0,"_oasis_original":0,"_oasis_task_priority":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1938","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v18.0 (Yoast SEO v21.8.1) - 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