regress with panel data

Code:

* Example generated by -dataex-. To install: ssc install dataex
clear
input str7 ym byte hs_c float imports str3(importer exporter) float GDP_im long GDP_ex double Exrate_im float(Exrate_ex conflict)
"2001M01" 1 22907.025 "CHN" "USA" 290989.9 3425559 95.2487673974315 132.03389     -488.7
"2001M02" 1 22907.025 "CHN" "USA" 301626.9 3432654 94.9859811841317 132.53093     -842.2
"2001M03" 1 22907.025 "CHN" "USA" 312263.8 3439749 96.5148945688052 134.90831    -1374.5
"2001M04" 1 22907.025 "CHN" "USA" 322900.7 3446845 97.7540203225569 136.17534  -8309.801
"2001M05" 1 22907.025 "CHN" "USA" 329373.1 3442245 97.5296537738364 135.50266    -3037.7
"2001M06" 1 22907.025 "CHN" "USA" 335845.4 3437645 97.9459442254285 136.04584     -738.7
"2001M07" 1 22907.025 "CHN" "USA" 342317.8 3433045 98.5136769658743 135.71281    -2247.3
"2001M08" 1 22907.025 "CHN" "USA" 355947.1 3436219 96.5277841656989 132.57167    -1014.2
"2001M09" 1 22907.025 "CHN" "USA" 369576.5 3439392 95.4664429813288 131.81607    -2174.2
"2001M10" 1 22907.025 "CHN" "USA" 383205.9 3442566   96.36440014041 132.57242    -1261.1
"2001M11" 1 22907.025 "CHN" "USA"   361366 3452070 96.7013085639837 133.92229     -358.1
"2001M12" 1 22907.025 "CHN" "USA" 339526.1 3461574 97.5790651204532 134.67474       -575
"2002M01" 1  31262.51 "CHN" "USA" 317686.3 3471078 98.3799449054757 137.08035     -952.3
"2002M02" 1  31262.51 "CHN" "USA" 329365.3 3478199 99.2481334791048 138.10823    -1001.9
"2002M03" 1  31262.51 "CHN" "USA" 341044.4 3485321 97.8834719959884 137.17897     -903.7
"2002M04" 1  31262.51 "CHN" "USA" 352723.4 3492442 97.1425181532612 136.76201     -410.4
"2002M05" 1  31262.51 "CHN" "USA" 361031.6 3497140 95.4092946886645  132.7594     -399.8
"2002M06" 1  31262.51 "CHN" "USA" 369339.8 3501838 93.8074447121544 129.10393     -278.5
"2002M07" 1  31262.51 "CHN" "USA" 377648.1 3506535 91.6067234174144 125.30114     -757.6
"2002M08" 1  31262.51 "CHN" "USA" 392592.4 3508063 92.1153966922954  126.6381     -559.8
"2002M09" 1  31262.51 "CHN" "USA" 407536.7 3509590 92.3667537296484 127.08677     -600.7
"2002M10" 1  31262.51 "CHN" "USA"   422481 3511117 93.1840883646182 127.79578     -575.8
"2002M11" 1  31262.51 "CHN" "USA" 401759.3 3517165 91.9806011990866 126.60763     -544.6
"2002M12" 1  31262.51 "CHN" "USA" 381037.5 3523212     91.529878028 126.00581     -692.2
"2003M01" 1  40474.96 "CHN" "USA" 360315.8 3529260 90.1206136188956 123.26498     -836.1
"2003M02" 1  40474.96 "CHN" "USA" 371244.5 3539770  90.127945381461  123.0451     -943.2
"2003M03" 1  40474.96 "CHN" "USA" 382173.1 3550279 89.9944890775613 122.89462    -1089.8
"2003M04" 1  40474.96 "CHN" "USA" 393101.8 3560789 90.1636884906585 123.52025     -984.7
"2003M05" 1  40474.96 "CHN" "USA" 404193.4 3580574 87.9425578376848 118.27224     -636.2
"2003M06" 1  40474.96 "CHN" "USA"   415285 3600359 87.6403887383518  117.3232     -552.5
"2003M07" 1  40474.96 "CHN" "USA" 426376.6 3620144 88.1265059788148 118.31814     -717.4
"2003M08" 1  40474.96 "CHN" "USA" 444405.2 3634070 88.7374547228043 121.06068     -949.9
"2003M09" 1  40474.96 "CHN" "USA" 462433.9 3647996 87.8689113231125 120.48258     -790.7
"2003M10" 1  40474.96 "CHN" "USA" 480462.5 3661922 86.4437653981293 119.68214      -1097
"2003M11" 1  40474.96 "CHN" "USA" 459426.1 3668915 87.1762972397664 118.16027     -862.4
"2003M12" 1  40474.96 "CHN" "USA" 438389.6 3675909 86.1886065218889  113.6926 -1137.1001
"2004M01" 1 34436.934 "CHN" "USA" 417353.2 3682902 85.3595266527873 108.61776     -915.8
"2004M02" 1 34436.934 "CHN" "USA" 434094.1 3692462 84.1682250127312 108.43234    -1021.6
"2004M03" 1 34436.934 "CHN" "USA" 450835.1 3702022 85.8602293325678 110.82971    -1250.6
"2004M04" 1 34436.934 "CHN" "USA"   467576 3711582 86.4399453470538  111.8528    -1089.2
"2004M05" 1 34436.934 "CHN" "USA" 480282.2 3723227 87.9178017422674 114.70498     -806.5
"2004M06" 1 34436.934 "CHN" "USA" 492988.5 3734872 87.1046063014496 113.60893       -978
"2004M07" 1 34436.934 "CHN" "USA" 505694.7 3746517 86.8262024465545 113.53995     -753.5
"2004M08" 1 34436.934 "CHN" "USA" 525372.8 3759281  87.392378701273   113.966     -608.5
"2004M09" 1 34436.934 "CHN" "USA" 545050.9 3772044 87.4111484209643 112.92165     -624.5
"2004M10" 1 34436.934 "CHN" "USA" 564729.1 3784808 86.0960776241377  110.8545     -294.6
"2004M11" 1 34436.934 "CHN" "USA" 539410.4 3798823 83.5447414579257  105.9082     -292.2
"2004M12" 1 34436.934 "CHN" "USA" 514091.7 3812838 82.0541941942796 103.66364     -572.9
"2005M01" 1   56490.7 "CHN" "USA"   488773 3826852 82.1078962405486 103.37172     -304.8
"2005M02" 1   56490.7 "CHN" "USA" 506251.4 3833060 82.8945232416078 103.84805     -510.8
"2005M03" 1   56490.7 "CHN" "USA" 523729.8 3839267 82.0825859930692 102.95734     -700.6
"2005M04" 1   56490.7 "CHN" "USA" 541208.2 3845474 82.7821510742878 104.66167     -472.7
"2005M05" 1   56490.7 "CHN" "USA" 557561.4 3855544 83.1157669337385 106.34795     -990.3
"2005M06" 1   56490.7 "CHN" "USA" 573914.6 3865615 84.2998988532275 108.73842     -632.6
"2005M07" 1   56490.7 "CHN" "USA" 590267.8 3875685 85.8133001727106 111.08463     -750.3
"2005M08" 1   56490.7 "CHN" "USA" 616303.7 3883022 86.0680785320791  109.0041     -542.6
"2005M09" 1   56490.7 "CHN" "USA" 642339.7 3890359 86.1042618695447 108.34776     -788.6
"2005M10" 1   56490.7 "CHN" "USA" 668375.6 3897696   87.44376973554 109.18375     -434.4
"2005M11" 1   56490.7 "CHN" "USA" 640514.5 3915218  88.326428758111 111.26317     -713.4
"2005M12" 1   56490.7 "CHN" "USA" 612653.4 3932741 87.9763728373693  111.1355     -426.3
"2006M01" 1  81040.34 "CHN" "USA" 584792.3 3950263 86.5881366299368  110.3442     -678.8
"2006M02" 1  81040.34 "CHN" "USA"   609045 3953497 86.9561957937083    111.22     -609.2
"2006M03" 1  81040.34 "CHN" "USA" 633297.8 3956730 86.7243768381664 110.81589    -1333.8
"2006M04" 1  81040.34 "CHN" "USA" 657550.5 3959964  86.292626886158 109.12933    -1344.8
"2006M05" 1  81040.34 "CHN" "USA" 672993.5 3961950 84.4130107730991  104.7291      -1151
"2006M06" 1  81040.34 "CHN" "USA" 688436.4 3963936 85.6043521050252  105.7272    -1499.6
"2006M07" 1  81040.34 "CHN" "USA" 703879.4 3965922 85.5206781503312 105.19274     -807.5
"2006M08" 1  81040.34 "CHN" "USA" 738997.2 3977076 85.4012147233782 104.92684      -1113
"2006M09" 1  81040.34 "CHN" "USA" 774114.9 3988230   86.26758063039 105.98315    -1785.8
"2006M10" 1  81040.34 "CHN" "USA" 809232.6 3999383 87.2939849273982 107.83578    -1019.7
"2006M11" 1  81040.34 "CHN" "USA"   785074 4003297 86.9312059561653  106.8941    -1656.7
"2006M12" 1  81040.34 "CHN" "USA" 760915.3 4007211 87.0858381296629 105.88695    -1223.4
"2007M01" 1 121749.84 "CHN" "USA" 736756.6 4011125 88.1709058655663  108.1406    -2221.5
"2007M02" 1 121749.84 "CHN" "USA" 772398.6 4019661 88.4680309310452 107.47453    -1393.2
"2007M03" 1 121749.84 "CHN" "USA" 808040.6 4028198 88.2165896802754 106.04984    -2480.4
"2007M04" 1 121749.84 "CHN" "USA" 843682.5 4036734 87.5223551122833 103.90254      -3041
"2007M05" 1 121749.84 "CHN" "USA" 868947.3 4044838 88.4249762412445 103.01221    -2810.5
"2007M06" 1 121749.84 "CHN" "USA"   894212 4052943 89.7994176184484 102.72694    -2797.6
"2007M07" 1 121749.84 "CHN" "USA" 919476.8 4061047 90.1439913275446 100.60493    -2321.1
"2007M08" 1 121749.84 "CHN" "USA" 965902.5 4069300 91.1855516013926 100.73556    -2192.1
"2007M09" 1 121749.84 "CHN" "USA"  1012328 4077553 90.5984099873853  99.03867    -2978.4
"2007M10" 1 121749.84 "CHN" "USA"  1058754 4085805 89.5003273545357  96.85046 -4514.5996
"2007M11" 1 121749.84 "CHN" "USA"  1028848 4080256 89.2296783629896  94.79352      -3270
"2007M12" 1 121749.84 "CHN" "USA" 998941.9 4074707 90.6907358463584  96.37177    -2581.6
"2008M01" 1 151607.58 "CHN" "USA" 969035.9 4069158 91.4561432930558  95.55553      -2046
"2008M02" 1 151607.58 "CHN" "USA"  1023150 4076921 93.5013522500989  95.10735      -5062
"2008M03" 1 151607.58 "CHN" "USA"  1077263 4084683  92.190051215958  92.49255    -4052.7
"2008M04" 1 151607.58 "CHN" "USA"  1131377 4092446 93.1322198043677   92.6712    -5042.4
"2008M05" 1 151607.58 "CHN" "USA"  1156253 4085258 93.9823709559253  93.72097    -2640.7
"2008M06" 1 151607.58 "CHN" "USA"  1181128 4078071 94.9891741527411  94.85728    -2735.2
"2008M07" 1 151607.58 "CHN" "USA"  1206004 4070883 94.8847806429896   94.3504    -2784.9
"2008M08" 1 151607.58 "CHN" "USA"  1236305 4041259 96.8387184905498  98.96593      -3223
"2008M09" 1 151607.58 "CHN" "USA"  1266607 4011636 99.4853398062497 102.48123    -1573.9
"2008M10" 1 151607.58 "CHN" "USA"  1296908 3982012 103.995483591401  110.8625    -3169.7
"2008M11" 1 151607.58 "CHN" "USA"  1225333 3966539 106.160585135563 114.07413    -1732.3
"2008M12" 1 151607.58 "CHN" "USA"  1153759 3951066 103.497649081851 110.66965    -2386.7
"2009M01" 1 130867.41 "CHN" "USA"  1082184 3935593 104.036770558405  110.2786    -4105.6
"2009M02" 1 130867.41 "CHN" "USA"  1130807 3933372 105.915488371398 113.40341    -4055.5
"2009M03" 1 130867.41 "CHN" "USA"  1179430 3931152 107.163796022779 114.57028    -7922.8
"2009M04" 1 130867.41 "CHN" "USA"  1228053 3928932 105.124889734425  112.8565    -5349.3
"2002M09" 3 3570.5576 "CHN" "USA" 407536.7 3509590 92.3667537296484 127.08677     -600.7
"2002M10" 3 3570.5576 "CHN" "USA"   422481 3511117 93.1840883646182 127.79578     -575.8
"2002M11" 3 3570.5576 "CHN" "USA" 401759.3 3517165 91.9806011990866 126.60763     -544.6
"2002M12" 3 3570.5576 "CHN" "USA" 381037.5 3523212     91.529878028 126.00581     -692.2
"2003M01" 3  8855.441 "CHN" "USA" 360315.8 3529260 90.1206136188956 123.26498     -836.1
"2003M02" 3  8855.441 "CHN" "USA" 371244.5 3539770  90.127945381461  123.0451     -943.2
"2003M03" 3  8855.441 "CHN" "USA" 382173.1 3550279 89.9944890775613 122.89462    -1089.8
"2003M04" 3  8855.441 "CHN" "USA" 393101.8 3560789 90.1636884906585 123.52025     -984.7
"2003M05" 3  8855.441 "CHN" "USA" 404193.4 3580574 87.9425578376848 118.27224     -636.2
"2003M06" 3  8855.441 "CHN" "USA"   415285 3600359 87.6403887383518  117.3232     -552.5
"2003M07" 3  8855.441 "CHN" "USA" 426376.6 3620144 88.1265059788148 118.31814     -717.4
"2003M08" 3  8855.441 "CHN" "USA" 444405.2 3634070 88.7374547228043 121.06068     -949.9
"2003M09" 3  8855.441 "CHN" "USA" 462433.9 3647996 87.8689113231125 120.48258     -790.7
"2003M10" 3  8855.441 "CHN" "USA" 480462.5 3661922 86.4437653981293 119.68214      -1097
"2003M11" 3  8855.441 "CHN" "USA" 459426.1 3668915 87.1762972397664 118.16027     -862.4
"2003M12" 3  8855.441 "CHN" "USA" 438389.6 3675909 86.1886065218889  113.6926 -1137.1001
"2004M01" 3  3054.515 "CHN" "USA" 417353.2 3682902 85.3595266527873 108.61776     -915.8
"2004M02" 3  3054.515 "CHN" "USA" 434094.1 3692462 84.1682250127312 108.43234    -1021.6
"2004M03" 3  3054.515 "CHN" "USA" 450835.1 3702022 85.8602293325678 110.82971    -1250.6
"2004M04" 3  3054.515 "CHN" "USA"   467576 3711582 86.4399453470538  111.8528    -1089.2
"2004M05" 3  3054.515 "CHN" "USA" 480282.2 3723227 87.9178017422674 114.70498     -806.5
"2004M06" 3  3054.515 "CHN" "USA" 492988.5 3734872 87.1046063014496 113.60893       -978
"2004M07" 3  3054.515 "CHN" "USA" 505694.7 3746517 86.8262024465545 113.53995     -753.5
"2004M08" 3  3054.515 "CHN" "USA" 525372.8 3759281  87.392378701273   113.966     -608.5
"2004M09" 3  3054.515 "CHN" "USA" 545050.9 3772044 87.4111484209643 112.92165     -624.5
"2004M10" 3  3054.515 "CHN" "USA" 564729.1 3784808 86.0960776241377  110.8545     -294.6
"2004M11" 3  3054.515 "CHN" "USA" 539410.4 3798823 83.5447414579257  105.9082     -292.2
"2004M12" 3  3054.515 "CHN" "USA" 514091.7 3812838 82.0541941942796 103.66364     -572.9
"2005M01" 3 1885.4142 "CHN" "USA"   488773 3826852 82.1078962405486 103.37172     -304.8
"2005M02" 3 1885.4142 "CHN" "USA" 506251.4 3833060 82.8945232416078 103.84805     -510.8
"2005M03" 3 1885.4142 "CHN" "USA" 523729.8 3839267 82.0825859930692 102.95734     -700.6
"2005M04" 3 1885.4142 "CHN" "USA" 541208.2 3845474 82.7821510742878 104.66167     -472.7
"2005M05" 3 1885.4142 "CHN" "USA" 557561.4 3855544 83.1157669337385 106.34795     -990.3
"2005M06" 3 1885.4142 "CHN" "USA" 573914.6 3865615 84.2998988532275 108.73842     -632.6
"2005M07" 3 1885.4142 "CHN" "USA" 590267.8 3875685 85.8133001727106 111.08463     -750.3
"2005M08" 3 1885.4142 "CHN" "USA" 616303.7 3883022 86.0680785320791  109.0041     -542.6
"2005M09" 3 1885.4142 "CHN" "USA" 642339.7 3890359 86.1042618695447 108.34776     -788.6
"2005M10" 3 1885.4142 "CHN" "USA" 668375.6 3897696   87.44376973554 109.18375     -434.4
"2005M11" 3 1885.4142 "CHN" "USA" 640514.5 3915218  88.326428758111 111.26317     -713.4
"2005M12" 3 1885.4142 "CHN" "USA" 612653.4 3932741 87.9763728373693  111.1355     -426.3
"2006M01" 3  5560.878 "CHN" "USA" 584792.3 3950263 86.5881366299368  110.3442     -678.8
"2006M02" 3  5560.878 "CHN" "USA"   609045 3953497 86.9561957937083    111.22     -609.2
"2006M03" 3  5560.878 "CHN" "USA" 633297.8 3956730 86.7243768381664 110.81589    -1333.8
"2006M04" 3  5560.878 "CHN" "USA" 657550.5 3959964  86.292626886158 109.12933    -1344.8
"2006M05" 3  5560.878 "CHN" "USA" 672993.5 3961950 84.4130107730991  104.7291      -1151
"2006M06" 3  5560.878 "CHN" "USA" 688436.4 3963936 85.6043521050252  105.7272    -1499.6
"2006M07" 3  5560.878 "CHN" "USA" 703879.4 3965922 85.5206781503312 105.19274     -807.5
"2006M08" 3  5560.878 "CHN" "USA" 738997.2 3977076 85.4012147233782 104.92684      -1113
"2006M09" 3  5560.878 "CHN" "USA" 774114.9 3988230   86.26758063039 105.98315    -1785.8
"2006M10" 3  5560.878 "CHN" "USA" 809232.6 3999383 87.2939849273982 107.83578    -1019.7
"2006M11" 3  5560.878 "CHN" "USA"   785074 4003297 86.9312059561653  106.8941    -1656.7
"2006M12" 3  5560.878 "CHN" "USA" 760915.3 4007211 87.0858381296629 105.88695    -1223.4
"2007M01" 3 14253.283 "CHN" "USA" 736756.6 4011125 88.1709058655663  108.1406    -2221.5
"2007M02" 3 14253.283 "CHN" "USA" 772398.6 4019661 88.4680309310452 107.47453    -1393.2
"2007M03" 3 14253.283 "CHN" "USA" 808040.6 4028198 88.2165896802754 106.04984    -2480.4
"2007M04" 3 14253.283 "CHN" "USA" 843682.5 4036734 87.5223551122833 103.90254      -3041
"2007M05" 3 14253.283 "CHN" "USA" 868947.3 4044838 88.4249762412445 103.01221    -2810.5
"2007M06" 3 14253.283 "CHN" "USA"   894212 4052943 89.7994176184484 102.72694    -2797.6
"2007M07" 3 14253.283 "CHN" "USA" 919476.8 4061047 90.1439913275446 100.60493    -2321.1
"2007M08" 3 14253.283 "CHN" "USA" 965902.5 4069300 91.1855516013926 100.73556    -2192.1
"2007M09" 3 14253.283 "CHN" "USA"  1012328 4077553 90.5984099873853  99.03867    -2978.4
"2007M10" 3 14253.283 "CHN" "USA"  1058754 4085805 89.5003273545357  96.85046 -4514.5996
"2007M11" 3 14253.283 "CHN" "USA"  1028848 4080256 89.2296783629896  94.79352      -3270
"2007M12" 3 14253.283 "CHN" "USA" 998941.9 4074707 90.6907358463584  96.37177    -2581.6
"2008M01" 3   15328.8 "CHN" "USA" 969035.9 4069158 91.4561432930558  95.55553      -2046
"2008M02" 3   15328.8 "CHN" "USA"  1023150 4076921 93.5013522500989  95.10735      -5062
"2008M03" 3   15328.8 "CHN" "USA"  1077263 4084683  92.190051215958  92.49255    -4052.7
"2008M04" 3   15328.8 "CHN" "USA"  1131377 4092446 93.1322198043677   92.6712    -5042.4
"2008M05" 3   15328.8 "CHN" "USA"  1156253 4085258 93.9823709559253  93.72097    -2640.7
"2008M06" 3   15328.8 "CHN" "USA"  1181128 4078071 94.9891741527411  94.85728    -2735.2
"2008M07" 3   15328.8 "CHN" "USA"  1206004 4070883 94.8847806429896   94.3504    -2784.9
"2008M08" 3   15328.8 "CHN" "USA"  1236305 4041259 96.8387184905498  98.96593      -3223
"2008M09" 3   15328.8 "CHN" "USA"  1266607 4011636 99.4853398062497 102.48123    -1573.9
"2008M10" 3   15328.8 "CHN" "USA"  1296908 3982012 103.995483591401  110.8625    -3169.7
"2008M11" 3   15328.8 "CHN" "USA"  1225333 3966539 106.160585135563 114.07413    -1732.3
"2008M12" 3   15328.8 "CHN" "USA"  1153759 3951066 103.497649081851 110.66965    -2386.7
"2009M01" 3  5691.213 "CHN" "USA"  1082184 3935593 104.036770558405  110.2786    -4105.6
"2009M02" 3  5691.213 "CHN" "USA"  1130807 3933372 105.915488371398 113.40341    -4055.5
"2009M03" 3  5691.213 "CHN" "USA"  1179430 3931152 107.163796022779 114.57028    -7922.8
"2009M04" 3  5691.213 "CHN" "USA"  1228053 3928932 105.124889734425  112.8565    -5349.3
"2009M05" 3  5691.213 "CHN" "USA"  1257157 3933672 102.206898494182   107.628    -4022.9
"2009M06" 3  5691.213 "CHN" "USA"  1286261 3938412 100.704582631571 104.74212    -6657.6
"2009M07" 3  5691.213 "CHN" "USA"  1315365 3943152 100.204171397691 102.92252    -5497.3
"2009M08" 3  5691.213 "CHN" "USA"  1369192 3957189 99.4111044645282 101.29693    -5129.1
"2009M09" 3  5691.213 "CHN" "USA"  1423020 3971226 98.2524437102784  99.80137    -6877.1
"2009M10" 3  5691.213 "CHN" "USA"  1476847 3985263 96.7217188088701   98.4444    -6251.1
"2009M11" 3  5691.213 "CHN" "USA"  1411784 3991906 96.2560607379722  97.63283      -7399
"2009M12" 3  5691.213 "CHN" "USA"  1346720 3998549 97.2920921338491  98.14178    -6352.9
"2010M01" 3 37093.566 "CHN" "USA"  1281657 4005192  97.262547019236  98.15366   -18084.2
"2010M02" 3 37093.566 "CHN" "USA"  1339734 4018111 98.9521698050686 100.18134   -17574.3
"2010M03" 3 37093.566 "CHN" "USA"  1397811 4031031 98.4549443924715  99.84082    -4646.8
"2010M04" 3 37093.566 "CHN" "USA"  1455888 4043950 98.7186784280133  100.0141    -3887.3
"2010M05" 3 37093.566 "CHN" "USA"  1492501 4054372 101.432033026936 103.97416    -3251.9
"2010M06" 3 37093.566 "CHN" "USA"  1529114 4064794 102.688692447672 105.27413    -2925.3
"2010M07" 3 37093.566 "CHN" "USA"  1565727 4075216 101.455376872199 102.78316 -4395.4004
"2010M08" 3 37093.566 "CHN" "USA"  1641209 4082274 100.251113649551 101.02351  -8410.199
"2010M09" 3 37093.566 "CHN" "USA"  1716691 4089332 100.241808068078  99.60337    -8672.6
"2010M10" 3 37093.566 "CHN" "USA"  1792174 4096391 98.7447521503819   95.1022      -9068
"2010M11" 3 37093.566 "CHN" "USA"  1724092 4093101 100.476290307228  96.04137   -10536.6
"2010M12" 3 37093.566 "CHN" "USA"  1656011 4089811 101.321593833164  98.00818    -9005.7
end

In my dataset, the dependent variable is imports and the independent variables are conflict,GDP_im, GDP_ex, Exrate_im, Exrate_ex. Besides, hs_c means the different categories of international trade, and I want to analyze the influence degrees of conflict on different kinds of trade. But I don't know how to do this with panel data.

As I'm new with such kind of analysis, I would very much appreciate your help. Best, Kendal

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