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  • Different p-values on year dummies with reghdfe and eventdd, hdfe

    Hello,
    I am trying to run an event study with the user-created command eventdd. This command has an option to use regdhfe as the method. However, whereas I get the same point estimates and p-values for my controls, I get different point estimates and p-values for my year dummies and leads/lags. I've been playing around a bit with changing the number of leads/lags included in eventdd to see if I can isolate a reason there, but I haven't found it yet.

    The code and dataex below should replicate the problem. Please let me know if you spot what I'm missing. Thank you in advance!

    Code:
    * Set as panel
    xtset year uninumbr
    gen timeToTreat = year - 2016
    
    * Reghdfe
    reghdfe log_depsumbr_r12 ///
                persinc_r12 quest_hofri topcorp top_esttax top_incrate log_pop i.year, absorb(stnumbr) vce(cluster stnumbr#year)
    
    coefplot, drop(_cons log_depsumbr_r12 persinc_r12 quest_hofri topcorp top_esttax top_incrate log_pop) vertical yline(0) levels(95)
    
    *eventdd
    eventdd log_depsumbr_r12 ///
                    persinc_r12 quest_hofri topcorp top_esttax top_incrate log_pop, ///
                    timevar(timeToTreat) graph_op(ytitle("Log Branch Level Deposits") ///
                    xlabel(-4(1)3)) method(hdfe, absorb(stnumbr) vce(cluster stnumbr#year)) inrange leads(4) lags(3)
    Code:
    * Example generated by -dataex-. For more info, type help dataex
    clear
    input float(log_depsumbr_r12 persinc_r12 quest_hofri) double(topcorp top_esttax) float(top_incrate log_pop) byte stnumbr float year long uninumbr
    11.198833 1827194368     10.25               .0884   0     43.64 17.451637  6 2012 197317
    10.399082  237812624 13.583333              .06968   0     37.82 15.695944  4 2012 277602
    10.346488  254474448 15.416667                .065 9.5     34.98 15.680482 47 2012 357338
     11.09252  236762640      7.25               .0463   0 38.010002  15.46295  8 2012 363833
    11.845684 1049173952  9.916666                .071  16     40.73 16.789732 36 2012 428606
    11.005934   66540872 15.416666  .08500000089406967   0      43.4 14.098637 33 2013  11263
    13.620537  245227328      8.25 .046300001442432404   0     47.21 15.477688  8 2013 195938
     11.35375  789184704 13.416667 .054999999701976776   0     43.39 16.788572 12 2013 289371
     9.676985  369927904     13.75   .0689999982714653   0     48.97 16.102648 37 2013 357541
     8.791045  188208320  8.166667  .07999999821186066   0     46.58 15.347212 22 2013 423308
     9.850019  386817120     12.75  .05999999865889549   0     46.99 16.109539 26 2013 518633
     9.033786  470860448     13.75                   0   0     47.66 16.264763 39 2013 531789
            .  481333152     13.75                   0   0      47.6 16.267082 39 2014 211936
    10.265052   65379020 11.583333  .06499999761581421   0     48.27 14.431004 54 2014 212159
    11.297485  193243440  8.166667  .07999999821186066   0     46.58 15.351503 22 2014 231815
    10.334745  396551648     12.75  .05999999865889549   0     46.99 16.111277 26 2014 233175
    10.888033  396551648     12.75  .05999999865889549   0     46.99 16.111277 26 2014 237790
    12.009887  311088160 11.916666  .08250000327825546  26     47.84 15.600592 24 2014 267964
     10.55259  176396816 13.083333  .05000000074505806   0     48.55 15.389707 45 2014 290407
     8.818259 1911013632     10.25  .08839999884366989   0     52.12 17.468418  6 2014 428753
    11.353657 1229768832 10.416667                   0   0     43.39  17.10998 48 2014 430934
    10.611972  637068352        10               .0775  16     46.71   16.3696 17 2015  11753
            . 1242254592 11.083334                   0   0     43.39 17.128551 48 2015 360004
     8.866914  258684528 13.583333                 .06   0     47.12 15.737247  4 2015 447303
     8.219564  192343504  8.166667                 .08   0     46.58 15.356027 22 2015 534244
    10.784465 1129725184  9.916666                .065  16     49.58 16.792894 36 2016 183481
     11.33099  409154080     13.75                 .04   0     47.84 16.134146 37 2016 185869
    10.253937 1226140288 11.083334                   0   0     43.39 17.144642 48 2016 188013
     9.679642  425424576     13.75                 .06   0     47.84 15.945842 51 2016 227407
     8.341726 1226140288 11.083334                   0   0     43.39 17.144642 48 2016 249058
     9.552864  522099872 13.083333                 .09  32     49.67  15.99859 34 2016 426505
    10.974532 2098095360     10.25               .0884   0     52.13 17.482891  6 2016 445687
     11.70103  949614336 13.416667                .055   0     43.39 16.858942 12 2017  14120
      8.56325  161720288     11.75                 .06   0     47.42 15.185066 40 2017  17416
     9.608523  282592448 13.583333                .098  16     50.61 15.532777 27 2017 221983
    11.602762 1181438976  9.916666                .065  16     49.58 16.790726 36 2017 261419
    10.629284 1181438976  9.916666                .065  16     49.58 16.790726 36 2017 430915
    10.433756  949614336 13.416667                .055   0     43.39 16.858942 12 2017 432420
     9.417186  184696912 12.583333                .076  16     49.88 15.237967 41 2017 462027
    11.052255  643511872        10               .0775  16     47.05 16.363384 17 2017 470543
     12.17712  337389248 11.916666               .0825  26     46.55  15.61427 24 2018  11953
    12.820665 1344420992 11.083334                   0   0      40.8 17.169775 48 2018  16042
            . 1344420992 11.083334                   0   0      40.8 17.169775 48 2018  16254
     10.05606  439585824     14.75                 .06   0     46.55  15.95686 51 2018 212391
    10.974466 2204399616     11.25               .0884   0      54.1 17.490227  6 2018 481362
    12.493505 2265766656         .               .0884   0      54.1  17.49023  6 2019  16963
    10.904416 1375026560         .                   0   0      40.8  17.18235 48 2019  33140
    10.496861  666853632         .                .095  16     45.75 16.354511 17 2019 422903
    11.041176  551308544         .                .115  16     49.77  16.00058 34 2019 481647
     10.43661  197755072         .                 .08   0     44.58 15.354157 22 2019 570213
    end
    Last edited by Martha Fiehn; 09 Mar 2022, 09:32.
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