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. 2017 May 18;12(5):e0177720. doi: 10.1371/journal.pone.0177720

Table 6. Relative time model of daily returns pre- and post-event using firearm manufacturers, TNIC counterfactual set, and DGTW as control for market.

  (1) (2) (3)
Dependent Variable Base TNIC DGTW
Rel Timet-10 -0.00619* -0.00151 -0.00643**
(0.00364) (0.00259) (0.00312)
Rel Timet-9 -0.00427 -0.00185 -0.000974
(0.00366) (0.00272) (0.00387)
Rel Timet-8 -0.00200 0.000745 -0.00324
(0.00350) (0.00240) (0.00297)
Rel Timet-7 0.00214 -0.00420 0.00295
(0.00385) (0.00280) (0.00292)
Rel Timet-6 0.00196 -0.00397* 0.00275
(0.00382) (0.00231) (0.00386)
Rel Timet-5 -0.00155 -0.00281 -0.000962
(0.00320) (0.00236) (0.00342)
Rel Timet-4 -0.00307 0.00251 -0.000255
(0.00437) (0.00316) (0.00375)
Rel Timet-3 -0.0127*** -0.00342 -0.0123***
(0.00342) (0.00293) (0.00417)
Rel Timet-2 -0.00287 -0.000705 0.000506
(0.00369) (0.00230) (0.00305)
Rel Timet-1 Omitted Category
Rel Time0 -0.00527* -0.00206 -0.00424
(0.00318) (0.00275) (0.00327)
Rel Timet+1 -0.00539 0.000726 -0.00346
(0.00336) (0.00342) (0.00300)
Rel Timet+2 -0.00997** -0.00255 -0.00878**
(0.00401) (0.00257) (0.00354)
Rel Timet+3 -0.00600* 0.00195 -0.00469
(0.00363) (0.00300) (0.00346)
Rel Timet+4 -0.00723* -0.00289 -0.00481
(0.00371) (0.00267) (0.00375)
Rel Timet+5 -0.00679** -0.00445 -0.00418
(0.00317) (0.00283) (0.00366)
Rel Timet+6 0.00270 -0.00279 0.00444
(0.00320) (0.00240) (0.00385)
Rel Timet+7 -0.00452 -0.00132 -0.00217
(0.00379) (0.00263) (0.00371)
Rel Timet+8 -0.00445 0.000518 -0.00348
(0.00320) (0.00242) (0.00319)
Rel Timet+9 -0.00733** 0.000830 -0.00807**
(0.00352) (0.00271) (0.00325)
Rel Timet+10 -0.00601* -0.00332 -0.00607**
(0.00363) (0.00230) (0.00260)
Rel Timet+11 -0.00540 -0.00123 -0.00460
(0.00331) (0.00240) (0.00382)
Rel Timet+12 -0.00416 0.00103 -0.00398
(0.00389) (0.00269) (0.00371)
Rel Timet+13 0.00219 -0.000180 0.00292
(0.00359) (0.00291) (0.00356)
Rel Timet+14 -0.00446 -0.00351 -0.00498*
(0.00327) (0.00225) (0.00282)
Rel Timet+15 -0.00542* -0.00336 -0.00326
(0.00310) (0.00247) (0.00320)
Rel Timet+16 -0.00847** 0.00149 -0.00883***
(0.00348) (0.00301) (0.00296)
Rel Timet+17 -0.00313 -0.00310 0.000146
(0.00345) (0.00247) (0.00363)
Rel Timet+18 -0.00362 0.00107 -0.00136
(0.00410) (0.00254) (0.00351)
Rel Timet+19 -0.00613* -0.00434** -0.00537
(0.00316) (0.00214) (0.00340)
Rel Timet+20 -0.00217 -0.000434 -6.57e-05
(0.00398) (0.00237) (0.00444)
Market Return 1.093*** 1.028***
(0.0396) (0.0322)
DGTW Return 0.215***
(0.0147)
Constant 0.00592** 0.00249 0.0158***
  (0.00273) (0.00164) (0.00256)
N 5,646 11,292 5,646
R-squared 0.196 0.120 0.087

Bootstrapped standard errors in parentheses.

*** p<0.01

** p<0.05

* p<0.1.