------------------------------------------------------------------------------ log: c:\www\econ626\stata\ada_jpe.log log type: text opened on: 25 Aug 2006, 08:18:06 . *read in stata data file; . use ada_jpe; . * construct new variables and reduce the sample; . * delete people with business income (self employed); . drop if incbus~=0; (17753 observations deleted) . gen yearw=year-1; . gen white=race==100; . gen black=race==200; . gen hispanic=((100<=hispan)&(hispan<500)); . gen lths=educrec<6; . gen hsgrad=educrec==7; . gen somecol=educrec==8; . gen disabled=disabwrk==2; . gen ada=yearw>=1992; . gen weekly_earn=incwage/wkswork1; (14692 missing values generated) . gen treatment=ada*disabled; . gen disabled_state=100*disabled+statefip; . label var yearw "year of work"; . label var white "d.v., =1 if white"; . label var black "d.v., =1 if black"; . label var hispanic "d.v., =1 if hispanic"; . label var lths "d.v., =1 if have less than high school educ"; . label var hsgrad "d.v., =1 if high school graduate"; . label var somecol "d.v., =1 if have some college"; . label var ada "d.v., =1 in 1992 and beyond"; . label var disabled "d.v., =1 if have work disability"; . label var treatment "d.v., disabled in post ADA period"; . label var disabled_state "unique ID for disability status and state"; . * get work year and region fixed effects; . xi i.yearw i.region i.age; i.yearw _Iyearw_1987-1996 (naturally coded; _Iyearw_1987 omitted) i.region _Iregion_11-42 (naturally coded; _Iregion_11 omitted) i.age _Iage_21-39 (naturally coded; _Iage_21 omitted) . * the authors interact the disabled dummy with all year effect; . * and include all interactions in the model. if the d-in-d; . * assumptions are correct, the interactions prior to 1992 should; . * all be zero; . gen d_y88=_Iyearw_1988*disabled; . gen d_y89=_Iyearw_1989*disabled; . gen d_y90=_Iyearw_1990*disabled; . gen d_y91=_Iyearw_1991*disabled; . gen d_y92=_Iyearw_1992*disabled; . gen d_y93=_Iyearw_1993*disabled; . gen d_y94=_Iyearw_1994*disabled; . gen d_y95=_Iyearw_1995*disabled; . gen d_y96=_Iyearw_1996*disabled; . compress; incbus was float now byte yearw was float now int white was float now byte black was float now byte hispanic was float now byte lths was float now byte hsgrad was float now byte somecol was float now byte disabled was float now byte ada was float now byte treatment was float now byte disabled_state was float now int d_y88 was float now byte d_y89 was float now byte d_y90 was float now byte d_y91 was float now byte d_y92 was float now byte d_y93 was float now byte d_y94 was float now byte d_y95 was float now byte d_y96 was float now byte . * run basic diff-in-diff model, column 2, table 3; . * do not control for covariates; . reg wkswork1 _Iy* disabled d_y*; Source | SS df MS Number of obs = 195714 -------------+------------------------------ F( 19,195694) = 1346.15 Model | 6036918.11 19 317732.532 Prob > F = 0.0000 Residual | 46189618.9195694 236.029816 R-squared = 0.1156 -------------+------------------------------ Adj R-squared = 0.1155 Total | 52226537195713 266.852672 Root MSE = 15.363 ------------------------------------------------------------------------------ wkswork1 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- _Iyearw_1988 | .4311154 .1562457 2.76 0.006 .1248775 .7373533 _Iyearw_1989 | 1.728542 .1529885 11.30 0.000 1.428688 2.028396 _Iyearw_1990 | 1.288564 .1533607 8.40 0.000 .9879807 1.589147 _Iyearw_1991 | .3421556 .1536717 2.23 0.026 .0409628 .6433484 _Iyearw_1992 | .0865064 .1548221 0.56 0.576 -.2169413 .3899541 _Iyearw_1993 | .3305223 .1565137 2.11 0.035 .0237593 .6372853 _Iyearw_1994 | .6819202 .1573387 4.33 0.000 .3735401 .9903002 _Iyearw_1995 | 1.241333 .1639427 7.57 0.000 .9200089 1.562656 _Iyearw_1996 | 1.41223 .1636058 8.63 0.000 1.091566 1.732893 disabled | -23.7888 .500911 -47.49 0.000 -24.77057 -22.80703 d_y88 | -.7371178 .7328373 -1.01 0.314 -2.173461 .6992259 d_y89 | -.7552183 .7189482 -1.05 0.294 -2.16434 .653903 d_y90 | -2.612262 .7073555 -3.69 0.000 -3.998661 -1.225862 d_y91 | -2.176184 .7040983 -3.09 0.002 -3.556199 -.7961677 d_y92 | -1.567489 .700199 -2.24 0.025 -2.939862 -.1951153 d_y93 | -3.113591 .707372 -4.40 0.000 -4.500023 -1.727159 d_y94 | -4.044365 .7328552 -5.52 0.000 -5.480743 -2.607986 d_y95 | -3.563268 .7626032 -4.67 0.000 -5.057952 -2.068584 d_y96 | -4.472773 .7514502 -5.95 0.000 -5.945597 -2.999948 _cons | 43.86073 .1085045 404.23 0.000 43.64807 44.0734 ------------------------------------------------------------------------------ . * run basic diff-in-diff model, column 2, table 3; . * do not control for covariates; . * have only one treatment variable; . reg wkswork1 _Iy* disabled treatment; Source | SS df MS Number of obs = 195714 -------------+------------------------------ F( 11,195702) = 2321.35 Model | 6027911.45 11 547991.95 Prob > F = 0.0000 Residual | 46198625.5195702 236.06619 R-squared = 0.1154 -------------+------------------------------ Adj R-squared = 0.1154 Total | 52226537195713 266.852672 Root MSE = 15.364 ------------------------------------------------------------------------------ wkswork1 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- _Iyearw_1988 | .3950318 .1526629 2.59 0.010 .0958162 .6942475 _Iyearw_1989 | 1.691428 .1494935 11.31 0.000 1.398424 1.984432 _Iyearw_1990 | 1.165767 .1497245 7.79 0.000 .872311 1.459224 _Iyearw_1991 | .2387542 .1499781 1.59 0.111 -.0551992 .5327076 _Iyearw_1992 | .1122322 .1518504 0.74 0.460 -.185391 .4098554 _Iyearw_1993 | .2774751 .1534864 1.81 0.071 -.0233546 .5783048 _Iyearw_1994 | .5858643 .1544237 3.79 0.000 .2831977 .888531 _Iyearw_1995 | 1.167005 .1608395 7.26 0.000 .8517636 1.482247 _Iyearw_1996 | 1.293786 .1604476 8.06 0.000 .9793123 1.608259 disabled | -25.07033 .2274473 -110.22 0.000 -25.51612 -24.62454 treatment | -1.970964 .3280719 -6.01 0.000 -2.613977 -1.327951 _cons | 43.92087 .1064727 412.51 0.000 43.71218 44.12955 ------------------------------------------------------------------------------ . * run basic diff-in-diff model, column 3, table 3; . * control for covariates; . reg wkswork1 _Ia* _Iy* _Ir* white black hispanic lths hsgrad somecol disable > d d_y*; Source | SS df MS Number of obs = 195714 -------------+------------------------------ F( 51,195662) = 886.65 Model | 9804198.56 51 192239.187 Prob > F = 0.0000 Residual | 42422338.4195662 216.814396 R-squared = 0.1877 -------------+------------------------------ Adj R-squared = 0.1875 Total | 52226537195713 266.852672 Root MSE = 14.725 ------------------------------------------------------------------------------ wkswork1 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- _Iage_22 | 2.160823 .2173168 9.94 0.000 1.734888 2.586759 _Iage_23 | 4.908889 .2153716 22.79 0.000 4.486765 5.331012 _Iage_24 | 7.186267 .2144899 33.50 0.000 6.765872 7.606663 _Iage_25 | 8.887932 .2137274 41.59 0.000 8.469031 9.306833 _Iage_26 | 9.764261 .2138117 45.67 0.000 9.345196 10.18333 _Iage_27 | 10.1264 .2128632 47.57 0.000 9.709195 10.54361 _Iage_28 | 11.06518 .2122466 52.13 0.000 10.64918 11.48118 _Iage_29 | 11.34354 .2113976 53.66 0.000 10.92921 11.75788 _Iage_30 | 11.49939 .2096901 54.84 0.000 11.0884 11.91038 _Iage_31 | 11.71853 .2099839 55.81 0.000 11.30696 12.13009 _Iage_32 | 12.09955 .2098306 57.66 0.000 11.68829 12.51082 _Iage_33 | 11.91232 .2106145 56.56 0.000 11.49952 12.32512 _Iage_34 | 11.79953 .2107159 56.00 0.000 11.38653 12.21253 _Iage_35 | 11.79907 .2099124 56.21 0.000 11.38765 12.21049 _Iage_36 | 12.67514 .2120645 59.77 0.000 12.2595 13.09078 _Iage_37 | 12.08625 .2133436 56.65 0.000 11.6681 12.5044 _Iage_38 | 12.18052 .2140563 56.90 0.000 11.76097 12.60006 _Iage_39 | 12.44325 .2153948 57.77 0.000 12.02109 12.86542 _Iyearw_1988 | .2681476 .1498058 1.79 0.073 -.0254681 .5617633 _Iyearw_1989 | 1.754364 .1466626 11.96 0.000 1.466909 2.041819 _Iyearw_1990 | 1.291092 .1470498 8.78 0.000 1.002878 1.579306 _Iyearw_1991 | .3941069 .1474205 2.67 0.008 .1051663 .6830476 _Iyearw_1992 | .115378 .1485679 0.78 0.437 -.1758115 .4065675 _Iyearw_1993 | .2658984 .1502626 1.77 0.077 -.0286127 .5604094 _Iyearw_1994 | .7091885 .1511752 4.69 0.000 .4128886 1.005488 _Iyearw_1995 | 1.093806 .1574569 6.95 0.000 .7851941 1.402418 _Iyearw_1996 | 1.27489 .1571975 8.11 0.000 .9667869 1.582993 _Iregion_12 | -.7656586 .1469052 -5.21 0.000 -1.053589 -.4777278 _Iregion_21 | .2595524 .145775 1.78 0.075 -.0261631 .545268 _Iregion_22 | 1.358302 .1633131 8.32 0.000 1.038212 1.678391 _Iregion_31 | .9999352 .1446807 6.91 0.000 .7163646 1.283506 _Iregion_32 | .5518662 .1970191 2.80 0.005 .1657135 .9380189 _Iregion_33 | .4588956 .1629765 2.82 0.005 .1394654 .7783257 _Iregion_41 | .2395887 .1592258 1.50 0.132 -.0724901 .5516674 _Iregion_42 | -.4623976 .1496168 -3.09 0.002 -.755643 -.1691522 white | 5.40948 .1529736 35.36 0.000 5.109656 5.709305 black | -.4306335 .1885869 -2.28 0.022 -.8002593 -.0610076 hispanic | -.3532886 .1037094 -3.41 0.001 -.5565566 -.1500206 lths | -5.121092 .1307986 -39.15 0.000 -5.377454 -4.86473 hsgrad | .3019143 .0859986 3.51 0.000 .1333591 .4704695 somecol | -.5399335 .0938648 -5.75 0.000 -.7239062 -.3559607 disabled | -23.54474 .4805883 -48.99 0.000 -24.48668 -22.6028 d_y88 | -.7284091 .7024146 -1.04 0.300 -2.105125 .6483067 d_y89 | -.8616311 .689093 -1.25 0.211 -2.212237 .4889746 d_y90 | -2.474162 .677989 -3.65 0.000 -3.803005 -1.14532 d_y91 | -2.434605 .6748825 -3.61 0.000 -3.757358 -1.111852 d_y92 | -1.629519 .6711252 -2.43 0.015 -2.944908 -.3141293 d_y93 | -3.019301 .6780239 -4.45 0.000 -4.348211 -1.69039 d_y94 | -4.155601 .7024377 -5.92 0.000 -5.532362 -2.77884 d_y95 | -3.84827 .7309902 -5.26 0.000 -5.280994 -2.415547 d_y96 | -4.527265 .7203113 -6.29 0.000 -5.939058 -3.115473 _cons | 29.72411 .2683986 110.75 0.000 29.19805 30.25016 ------------------------------------------------------------------------------ . * run basic diff-in-diff model, column 3, table 3; . * control for covariates; . * have only 1 treatment variable; . reg wkswork1 _Ia* _Iy* _Ir* white black hispanic lths hsgrad somecol disable > d treatment; Source | SS df MS Number of obs = 195714 -------------+------------------------------ F( 43,195670) = 1050.42 Model | 9794853.81 43 227787.298 Prob > F = 0.0000 Residual | 42431683.2195670 216.85329 R-squared = 0.1875 -------------+------------------------------ Adj R-squared = 0.1874 Total | 52226537195713 266.852672 Root MSE = 14.726 ------------------------------------------------------------------------------ wkswork1 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- _Iage_22 | 2.161929 .2173353 9.95 0.000 1.735957 2.587901 _Iage_23 | 4.90907 .2153892 22.79 0.000 4.486912 5.331227 _Iage_24 | 7.184325 .2145064 33.49 0.000 6.763898 7.604752 _Iage_25 | 8.88967 .2137451 41.59 0.000 8.470735 9.308606 _Iage_26 | 9.76156 .2138273 45.65 0.000 9.342464 10.18066 _Iage_27 | 10.12574 .2128813 47.57 0.000 9.708495 10.54298 _Iage_28 | 11.06892 .212263 52.15 0.000 10.65289 11.48496 _Iage_29 | 11.34602 .2114133 53.67 0.000 10.93166 11.76039 _Iage_30 | 11.49733 .2097057 54.83 0.000 11.08631 11.90835 _Iage_31 | 11.72074 .2099991 55.81 0.000 11.30915 12.13234 _Iage_32 | 12.10106 .2098452 57.67 0.000 11.68976 12.51235 _Iage_33 | 11.91253 .2106292 56.56 0.000 11.4997 12.32536 _Iage_34 | 11.79656 .2107255 55.98 0.000 11.38355 12.20958 _Iage_35 | 11.79859 .209929 56.20 0.000 11.38714 12.21005 _Iage_36 | 12.67572 .2120817 59.77 0.000 12.26004 13.09139 _Iage_37 | 12.08223 .2133591 56.63 0.000 11.66405 12.50041 _Iage_38 | 12.17826 .2140718 56.89 0.000 11.75868 12.59784 _Iage_39 | 12.44143 .2154116 57.76 0.000 12.01922 12.86363 _Iyearw_1988 | .2323839 .1463743 1.59 0.112 -.0545063 .5192741 _Iyearw_1989 | 1.712467 .1433148 11.95 0.000 1.431574 1.993361 _Iyearw_1990 | 1.174826 .1435689 8.18 0.000 .8934347 1.456218 _Iyearw_1991 | .278303 .1438826 1.93 0.053 -.0037034 .5603095 _Iyearw_1992 | .1395826 .1457244 0.96 0.338 -.1460337 .4251988 _Iyearw_1993 | .2193701 .1473668 1.49 0.137 -.0694653 .5082055 _Iyearw_1994 | .6094557 .1483913 4.11 0.000 .3186123 .9002991 _Iyearw_1995 | 1.007807 .1544989 6.52 0.000 .7049924 1.310621 _Iyearw_1996 | 1.155399 .1541805 7.49 0.000 .8532093 1.45759 _Iregion_12 | -.7634392 .1469158 -5.20 0.000 -1.051391 -.4754877 _Iregion_21 | .2619828 .1457836 1.80 0.072 -.0237495 .5477152 _Iregion_22 | 1.360417 .1633257 8.33 0.000 1.040302 1.680531 _Iregion_31 | 1.001145 .1446889 6.92 0.000 .7175583 1.284732 _Iregion_32 | .5529508 .1970328 2.81 0.005 .1667712 .9391304 _Iregion_33 | .4627734 .1629879 2.84 0.005 .143321 .7822257 _Iregion_41 | .2386578 .1592388 1.50 0.134 -.0734464 .5507621 _Iregion_42 | -.4578575 .149627 -3.06 0.002 -.7511229 -.1645921 white | 5.410431 .1529842 35.37 0.000 5.110585 5.710276 black | -.4344438 .1885999 -2.30 0.021 -.8040951 -.0647926 hispanic | -.3561149 .1037163 -3.43 0.001 -.5593964 -.1528334 lths | -5.117024 .1308042 -39.12 0.000 -5.373397 -4.86065 hsgrad | .3005886 .0860053 3.50 0.000 .1320202 .4691569 somecol | -.5388473 .0938722 -5.74 0.000 -.7228347 -.35486 disabled | -24.87146 .2190795 -113.53 0.000 -25.30085 -24.44206 treatment | -1.998608 .3144861 -6.36 0.000 -2.614993 -1.382223 _cons | 29.78426 .2676807 111.27 0.000 29.25961 30.30891 ------------------------------------------------------------------------------ . * cluster errors on state; . reg wkswork1 _Ia* _Iy* _Ir* white black hispanic lths hsgrad somecol disable > d treatment, > cluster(statefip); Regression with robust standard errors Number of obs = 195714 F( 43, 50) = 1384.20 Prob > F = 0.0000 R-squared = 0.1875 Number of clusters (statefip) = 51 Root MSE = 14.726 ------------------------------------------------------------------------------ | Robust wkswork1 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- _Iage_22 | 2.161929 .3113492 6.94 0.000 1.536565 2.787292 _Iage_23 | 4.90907 .3425687 14.33 0.000 4.221 5.597139 _Iage_24 | 7.184325 .3842308 18.70 0.000 6.412575 7.956075 _Iage_25 | 8.88967 .4319678 20.58 0.000 8.022037 9.757303 _Iage_26 | 9.76156 .5041346 19.36 0.000 8.748976 10.77414 _Iage_27 | 10.12574 .496856 20.38 0.000 9.127773 11.1237 _Iage_28 | 11.06892 .4423265 25.02 0.000 10.18049 11.95736 _Iage_29 | 11.34602 .5130327 22.12 0.000 10.31557 12.37648 _Iage_30 | 11.49733 .4875114 23.58 0.000 10.51813 12.47653 _Iage_31 | 11.72074 .5543748 21.14 0.000 10.60725 12.83424 _Iage_32 | 12.10106 .4762873 25.41 0.000 11.1444 13.05771 _Iage_33 | 11.91253 .5240906 22.73 0.000 10.85986 12.96519 _Iage_34 | 11.79656 .5319521 22.18 0.000 10.72811 12.86502 _Iage_35 | 11.79859 .5393793 21.87 0.000 10.71522 12.88197 _Iage_36 | 12.67572 .4938437 25.67 0.000 11.6838 13.66763 _Iage_37 | 12.08223 .6071922 19.90 0.000 10.86265 13.30181 _Iage_38 | 12.17826 .5129594 23.74 0.000 11.14795 13.20857 _Iage_39 | 12.44143 .5422683 22.94 0.000 11.35225 13.5306 _Iyearw_1988 | .2323839 .1893645 1.23 0.226 -.1479658 .6127337 _Iyearw_1989 | 1.712467 .2290903 7.48 0.000 1.252326 2.172609 _Iyearw_1990 | 1.174826 .3453985 3.40 0.001 .481073 1.86858 _Iyearw_1991 | .278303 .3860316 0.72 0.474 -.4970642 1.05367 _Iyearw_1992 | .1395826 .3897855 0.36 0.722 -.6433246 .9224898 _Iyearw_1993 | .2193701 .3802508 0.58 0.567 -.544386 .9831262 _Iyearw_1994 | .6094557 .4057138 1.50 0.139 -.2054444 1.424356 _Iyearw_1995 | 1.007807 .4271612 2.36 0.022 .1498281 1.865785 _Iyearw_1996 | 1.155399 .3616399 3.19 0.002 .4290243 1.881774 _Iregion_12 | -.7634392 .5736782 -1.33 0.189 -1.915706 .3888274 _Iregion_21 | .2619828 .3884223 0.67 0.503 -.5181863 1.042152 _Iregion_22 | 1.360417 .3901177 3.49 0.001 .5768423 2.143991 _Iregion_31 | 1.001145 .5561835 1.80 0.078 -.1159823 2.118272 _Iregion_32 | .5529508 .3990716 1.39 0.172 -.2486082 1.35451 _Iregion_33 | .4627734 .3772028 1.23 0.226 -.2948608 1.220407 _Iregion_41 | .2386578 .4801071 0.50 0.621 -.7256657 1.202981 _Iregion_42 | -.4578575 .4379105 -1.05 0.301 -1.337427 .4217116 white | 5.410431 .7558257 7.16 0.000 3.89231 6.928551 black | -.4344438 .822658 -0.53 0.600 -2.086801 1.217913 hispanic | -.3561149 .4552808 -0.78 0.438 -1.270573 .5583434 lths | -5.117024 .464892 -11.01 0.000 -6.050786 -4.183261 hsgrad | .3005886 .1448894 2.07 0.043 .0095697 .5916075 somecol | -.5388473 .1382596 -3.90 0.000 -.8165498 -.2611448 disabled | -24.87146 .5642716 -44.08 0.000 -26.00483 -23.73808 treatment | -1.998608 .4872344 -4.10 0.000 -2.977247 -1.019969 _cons | 29.78426 .8897542 33.47 0.000 27.99714 31.57138 ------------------------------------------------------------------------------ . * cluster errors on the state/disability status; . reg wkswork1 _Ia* _Iy* _Ir* white black hispanic lths hsgrad somecol disable > d treatment, > cluster(disabled_state); Regression with robust standard errors Number of obs = 195714 F( 43, 101) = 262.21 Prob > F = 0.0000 R-squared = 0.1875 Number of clusters (disabled_state) = 102 Root MSE = 14.726 ------------------------------------------------------------------------------ | Robust wkswork1 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- _Iage_22 | 2.161929 .3094563 6.99 0.000 1.548051 2.775807 _Iage_23 | 4.90907 .3428826 14.32 0.000 4.228883 5.589256 _Iage_24 | 7.184325 .3896097 18.44 0.000 6.411444 7.957206 _Iage_25 | 8.88967 .4188204 21.23 0.000 8.058843 9.720497 _Iage_26 | 9.76156 .4890556 19.96 0.000 8.791406 10.73172 _Iage_27 | 10.12574 .4824809 20.99 0.000 9.168625 11.08285 _Iage_28 | 11.06892 .4573144 24.20 0.000 10.16174 11.97611 _Iage_29 | 11.34602 .5045487 22.49 0.000 10.34514 12.34691 _Iage_30 | 11.49733 .4845782 23.73 0.000 10.53606 12.4586 _Iage_31 | 11.72074 .5478417 21.39 0.000 10.63397 12.80751 _Iage_32 | 12.10106 .5063448 23.90 0.000 11.0966 13.10551 _Iage_33 | 11.91253 .5296149 22.49 0.000 10.86191 12.96314 _Iage_34 | 11.79656 .5379721 21.93 0.000 10.72937 12.86375 _Iage_35 | 11.79859 .5641547 20.91 0.000 10.67946 12.91772 _Iage_36 | 12.67572 .5043431 25.13 0.000 11.67523 13.6762 _Iage_37 | 12.08223 .5969312 20.24 0.000 10.89808 13.26638 _Iage_38 | 12.17826 .5239453 23.24 0.000 11.13889 13.21763 _Iage_39 | 12.44143 .5496865 22.63 0.000 11.351 13.53186 _Iyearw_1988 | .2323839 .1655908 1.40 0.164 -.0961037 .5608716 _Iyearw_1989 | 1.712467 .2250794 7.61 0.000 1.26597 2.158964 _Iyearw_1990 | 1.174826 .3238228 3.63 0.000 .532449 1.817204 _Iyearw_1991 | .278303 .3647013 0.76 0.447 -.4451662 1.001772 _Iyearw_1992 | .1395826 .3789653 0.37 0.713 -.6121827 .8913478 _Iyearw_1993 | .2193701 .3656377 0.60 0.550 -.5059567 .944697 _Iyearw_1994 | .6094557 .383215 1.59 0.115 -.1507397 1.369651 _Iyearw_1995 | 1.007807 .3971199 2.54 0.013 .2200275 1.795586 _Iyearw_1996 | 1.155399 .3422318 3.38 0.001 .4765036 1.834295 _Iregion_12 | -.7634392 .5574155 -1.37 0.174 -1.869202 .3423233 _Iregion_21 | .2619828 .3689335 0.71 0.479 -.469882 .9938477 _Iregion_22 | 1.360417 .3864626 3.52 0.001 .5937789 2.127055 _Iregion_31 | 1.001145 .5185346 1.93 0.056 -.0274881 2.029778 _Iregion_32 | .5529508 .4346908 1.27 0.206 -.3093588 1.41526 _Iregion_33 | .4627734 .3792655 1.22 0.225 -.2895873 1.215134 _Iregion_41 | .2386578 .4396711 0.54 0.588 -.6335313 1.110847 _Iregion_42 | -.4578575 .4507964 -1.02 0.312 -1.352116 .4364012 white | 5.410431 .7076801 7.65 0.000 4.006584 6.814278 black | -.4344438 .7744543 -0.56 0.576 -1.970753 1.101865 hispanic | -.3561149 .4371463 -0.81 0.417 -1.223296 .5110657 lths | -5.117024 .4718182 -10.85 0.000 -6.052984 -4.181063 hsgrad | .3005886 .1462517 2.06 0.042 .0104646 .5907126 somecol | -.5388473 .1367744 -3.94 0.000 -.810171 -.2675236 disabled | -24.87146 .5701416 -43.62 0.000 -26.00246 -23.74045 treatment | -1.998608 .5327256 -3.75 0.000 -3.055392 -.9418237 _cons | 29.78426 .8524801 34.94 0.000 28.09317 31.47535 ------------------------------------------------------------------------------ . log close; log: c:\www\econ626\stata\ada_jpe.log log type: text closed on: 25 Aug 2006, 08:18:47 ------------------------------------------------------------------------------