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ScriptPlosOne.txt
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250 lines (190 loc) · 14.4 KB
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5/9/2025 Scripts for PlosOne submission:
use "C:\Users\gshi\Dropbox\LastName\UW\pool_1622_reg.dta"
// Main regression: US students' major choices, robust error
. reg BA1 LIfront2 male DOB_98 African Asian Hispanic OtherRace RESIDENCY2 if USA==1, robust
Linear regression Number of obs = 66,534
F(8, 66525) = 168.70
Prob > F = 0.0000
R-squared = 0.0198
Root MSE = .38647
------------------------------------------------------------------------------
| Robust
BA1 | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | -.0048686 .0018474 -2.64 0.008 -.0084895 -.0012477
male | -.0693316 .0029782 -23.28 0.000 -.0751688 -.0634944
DOB_98 | -.0104797 .0004359 -24.04 0.000 -.0113341 -.0096254
African | .0163253 .0104421 1.56 0.118 -.0041412 .0367917
Asian | -.0635759 .0049346 -12.88 0.000 -.0732476 -.0539042
Hispanic | .0271843 .0064672 4.20 0.000 .0145085 .03986
OtherRace | .000948 .0061165 0.15 0.877 -.0110404 .0129364
RESIDENCY2 | -.0172629 .0031563 -5.47 0.000 -.0234493 -.0110765
_cons | .2632124 .0068439 38.46 0.000 .2497983 .2766265
------------------------------------------------------------------------------
//Robustness check 1: US students' STEM major choices
. reg STEM_dummy1 LIfront2 male DOB_98 African Asian Hispanic OtherRace RESIDENCY2 if USA==1, robust
Linear regression Number of obs = 58,991
F(8, 58982) = 405.19
Prob > F = 0.0000
R-squared = 0.0491
Root MSE = .4845
------------------------------------------------------------------------------
| Robust
STEM_dummy1 | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | .0070648 .0024619 2.87 0.004 .0022396 .0118901
male | .1929242 .0040076 48.14 0.000 .1850692 .2007792
DOB_98 | .0079596 .000505 15.76 0.000 .0069699 .0089494
African | -.0987013 .0131678 -7.50 0.000 -.1245102 -.0728924
Asian | .1473034 .0077309 19.05 0.000 .1321509 .1624559
Hispanic | -.0594916 .0082807 -7.18 0.000 -.0757218 -.0432614
OtherRace | .0277641 .0084169 3.30 0.001 .011267 .0442612
RESIDENCY2 | .0257243 .0041897 6.14 0.000 .0175125 .033936
_cons | .2907783 .0088993 32.67 0.000 .2733357 .308221
------------------------------------------------------------------------------
//Placebo 1: US students' ACT score, robust error
. reg ACT LIfront2 male DOB_98 African Asian Hispanic OtherRace RESIDENCY2 if USA==1, robust
Linear regression Number of obs = 54,595
F(8, 54586) = 1228.55
Prob > F = 0.0000
R-squared = 0.1541
Root MSE = 3.1935
------------------------------------------------------------------------------
| Robust
ACTscore | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | -.0234353 .0168663 -1.39 0.165 -.0564933 .0096227
male | 1.084445 .0274794 39.46 0.000 1.030585 1.138305
DOB_98 | .1469204 .004981 29.50 0.000 .1371576 .1566833
African | -4.382436 .1169333 -37.48 0.000 -4.611626 -4.153246
Asian | -.7466198 .0697457 -10.70 0.000 -.8833219 -.6099178
Hispanic | -2.460276 .0687299 -35.80 0.000 -2.594987 -2.325565
OtherRace | -.3777117 .0648904 -5.82 0.000 -.5048974 -.250526
RESIDENCY2 | -1.862361 .027858 -66.85 0.000 -1.916963 -1.807759
_cons | 31.4295 .0591404 531.44 0.000 31.31358 31.54542
------------------------------------------------------------------------------
//Placebo 2: US students' GPA, overall and by major, robust error
. reg CUM_GPA LIfront2 male DOB_98 African Asian Hispanic OtherRace RESIDENCY2 if USA==1, robust
Linear regression Number of obs = 66,147
F(8, 66138) = 527.97
Prob > F = 0.0000
R-squared = 0.0686
Root MSE = .49916
------------------------------------------------------------------------------
| Robust
CUM_GPA | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | -.0041018 .0023959 -1.71 0.087 -.0087979 .0005942
male | -.1470645 .0039374 -37.35 0.000 -.1547819 -.1393471
DOB_98 | .0143254 .0006165 23.24 0.000 .0131171 .0155337
African | -.4444944 .0168774 -26.34 0.000 -.4775742 -.4114147
Asian | -.1111346 .0082906 -13.40 0.000 -.1273841 -.094885
Hispanic | -.2696792 .0095289 -28.30 0.000 -.2883559 -.2510025
OtherRace | -.0574953 .0084056 -6.84 0.000 -.0739703 -.0410203
RESIDENCY2 | -.0805239 .0039455 -20.41 0.000 -.0882571 -.0727907
_cons | 3.573803 .0082642 432.44 0.000 3.557605 3.59
------------------------------------------------------------------------------
. reg CUM_GPA LIfront2 male DOB_98 African Asian Hispanic OtherRace RESIDENCY2 if USA==1 & BA1==1, robust
Linear regression Number of obs = 12,476
F(8, 12467) = 199.51
Prob > F = 0.0000
R-squared = 0.1472
Root MSE = .43799
------------------------------------------------------------------------------
| Robust
CUM_GPA | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | -.0048239 .0047826 -1.01 0.313 -.0141985 .0045508
male | -.197699 .0084448 -23.41 0.000 -.2142521 -.1811459
DOB_98 | .0277338 .0014528 19.09 0.000 .024886 .0305816
African | -.3875186 .0301815 -12.84 0.000 -.4466789 -.3283582
Asian | -.1589846 .019933 -7.98 0.000 -.1980564 -.1199128
Hispanic | -.2167151 .0175691 -12.33 0.000 -.2511534 -.1822769
OtherRace | -.0755605 .0165375 -4.57 0.000 -.1079766 -.0431443
RESIDENCY2 | -.0797886 .0078145 -10.21 0.000 -.0951061 -.064471
_cons | 3.619492 .0159598 226.79 0.000 3.588208 3.650776
------------------------------------------------------------------------------
. reg CUM_GPA LIfront2 male DOB_98 African Asian Hispanic OtherRace RESIDENCY2 if USA==1 & BA1==0, robust
Linear regression Number of obs = 53,671
F(8, 53662) = 353.89
Prob > F = 0.0000
R-squared = 0.0581
Root MSE = .51107
------------------------------------------------------------------------------
| Robust
CUM_GPA | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | -.0039017 .0027275 -1.43 0.153 -.0092476 .0014442
male | -.1329237 .004437 -29.96 0.000 -.1416203 -.1242271
DOB_98 | .0108481 .0006958 15.59 0.000 .0094844 .0122118
African | -.4581621 .0197727 -23.17 0.000 -.4969168 -.4194074
Asian | -.1005627 .0090304 -11.14 0.000 -.1182623 -.082863
Hispanic | -.2838668 .0110923 -25.59 0.000 -.3056078 -.2621257
OtherRace | -.0521455 .0095957 -5.43 0.000 -.0709533 -.0333378
RESIDENCY2 | -.0805833 .0045023 -17.90 0.000 -.0894078 -.0717588
_cons | 3.562896 .0094907 375.41 0.000 3.544294 3.581497
------------------------------------------------------------------------------
//Placebo 3: CHN/SK students' major choices, robust error
. reg BA1 LIfront2 male DOB_98 if CHN_foreign==1 | SK_foreign ==1 , robust
Linear regression Number of obs = 5,208
F(3, 5204) = 64.92
Prob > F = 0.0000
R-squared = 0.0346
Root MSE = .39891
------------------------------------------------------------------------------
| Robust
BA1 | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | .0003097 .007474 0.04 0.967 -.0143425 .0149618
male | -.0931152 .0113708 -8.19 0.000 -.1154067 -.0708237
DOB_98 | -.0199264 .001867 -10.67 0.000 -.0235864 -.0162664
_cons | .2616471 .019695 13.28 0.000 .2230365 .3002576
------------------------------------------------------------------------------
//Placebo 4: CHN/SK students' ACT scores, robust error
. reg ACT LIfront2 male DOB_98 if CHN_foreign==1 | SK_foreign ==1 , robust
Linear regression Number of obs = 546
F(3, 542) = 28.89
Prob > F = 0.0000
R-squared = 0.1195
Root MSE = 2.393
------------------------------------------------------------------------------
| Robust
ACTscore | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | -.1222707 .136431 -0.90 0.371 -.3902691 .1457276
male | .5210528 .2079362 2.51 0.013 .1125931 .9295125
DOB_98 | .3396612 .0383771 8.85 0.000 .2642751 .4150473
_cons | 29.56818 .3693341 80.06 0.000 28.84268 30.29368
------------------------------------------------------------------------------
//Placebo 5: CHN/SK students' GPA scores, robust error
. reg CUM_GPA LIfront2 male DOB_98 if CHN_foreign==1 | SK_foreign ==1 , robust
Linear regression Number of obs = 5,203
F(3, 5199) = 91.13
Prob > F = 0.0000
R-squared = 0.0499
Root MSE = .52607
------------------------------------------------------------------------------
| Robust
CUM_GPA | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | .0053643 .0098642 0.54 0.587 -.0139737 .0247023
male | -.1176565 .0141421 -8.32 0.000 -.1453809 -.0899321
DOB_98 | .0346251 .0027146 12.76 0.000 .0293034 .0399468
_cons | 3.514728 .0238562 147.33 0.000 3.46796 3.561496
------------------------------------------------------------------------------
//Placebo 6: CHN/SK students' STEM major, robust error
. reg STEM_dummy1 LIfront2 male DOB_98 if CHN_foreign==1 | SK_foreign ==1 , robust
Linear regression Number of obs = 4,486
F(3, 4482) = 122.03
Prob > F = 0.0000
R-squared = 0.0739
Root MSE = .46976
------------------------------------------------------------------------------
| Robust
STEM_dummy1 | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LIfront2 | .0062477 .0094387 0.66 0.508 -.0122568 .0247523
male | .2427795 .0142459 17.04 0.000 .2148505 .2707085
DOB_98 | .0204601 .0024555 8.33 0.000 .0156461 .0252741
_cons | .4671008 .0246068 18.98 0.000 .4188594 .5153423
------------------------------------------------------------------------------