Summary statistics for natl1975 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 2,232,406 5 0 5 5 shipnum | 0 reparea | 0 rectype | 2,232,406 1.219603 .4139778 1 2 restatus | 2,232,406 1.249002 .5000819 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 2,232,406 4.720984 2.332711 0 9 stsubres | 2,232,406 50.72694 23.66548 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 2,232,406 4.737504 2.32432 1 9 stsubocc | 2,232,406 50.89501 23.56767 11 95 csex | 2,232,406 1.486782 .4998254 1 2 birattnd | 2,232,406 1.024716 .2414122 1 4 frace | 2,232,406 1.951861 2.393335 0 9 -------------+--------------------------------------------------------- mrace | 2,232,406 1.257575 .7857013 0 9 crace | 2,232,406 1.2619 .7613361 0 8 crace3 | 2,232,406 1.356996 .7506365 1 3 dmage | 2,232,406 24.42725 5.320159 10 49 mage36 | 2,232,406 11.42814 5.318299 1 36 -------------+--------------------------------------------------------- mage15 | 2,232,406 11.57971 3.47514 1 17 mage12 | 2,232,406 8.219488 1.63066 1 13 mage8 | 2,232,406 3.483301 1.100155 1 8 mage7 | 2,232,406 3.482796 1.098307 1 7 mage6 | 2,232,406 2.486887 1.090888 1 6 -------------+--------------------------------------------------------- nlbnl | 2,232,406 2.673379 10.35841 0 99 nlbnd | 2,232,406 4.53255 16.34384 0 99 nlbd | 2,232,406 3.722544 15.04322 0 99 dtotord | 2,232,406 3.358715 10.50072 1 99 totord9 | 2,232,406 2.287555 1.625071 1 9 -------------+--------------------------------------------------------- dlivord | 2,232,406 3.18379 10.40634 1 99 livord9 | 2,232,406 2.138916 1.516423 1 9 livord8 | 2,232,406 2.110742 1.409818 1 8 livord7 | 2,232,406 2.089479 1.333261 1 7 livord6 | 2,232,406 2.048504 1.213888 1 6 -------------+--------------------------------------------------------- livord3 | 2,232,406 1.590998 .5144039 1 3 dfage | 2,232,406 35.54941 23.20976 10 99 fage11 | 2,232,406 4.883273 2.473538 1 11 dbirwt | 2,232,406 3322.885 687.0212 227 9999 birwt12 | 2,232,406 7.121149 1.240387 1 12 -------------+--------------------------------------------------------- birwt3 | 2,232,406 1.928609 .2678109 1 3 dplural | 2,232,406 1.019622 .1415866 1 5 plural3 | 2,232,406 1.01959 .1409648 1 3 plural2 | 2,232,406 1.019258 .1374294 1 2 birmon | 2,232,406 6.561559 3.424215 1 12 -------------+--------------------------------------------------------- birday | 2,232,406 15.75134 8.794902 1 99 lmpmon | 2,232,406 25.62898 35.05576 1 99 lmpday | 2,232,406 43.0137 38.02778 1 99 lmpyr | 0 dgestat | 2,232,406 41.6847 29.86848 0 99 -------------+--------------------------------------------------------- gestat10 | 2,232,406 6.008636 3.351201 0 10 gestat3 | 2,232,406 1.717409 .9618373 0 3 dmeduc | 2,232,406 28.31898 31.48078 0 99 meduc14 | 2,232,406 6.588518 3.864685 0 14 meduc6 | 2,232,406 2.496048 1.577554 0 6 -------------+--------------------------------------------------------- dfeduc | 2,232,406 37.25985 36.95129 0 99 feduc14 | 2,232,406 7.554816 4.588614 0 14 dlegit | 2,232,406 3.01467 3.07034 1 9 legit3 | 2,232,406 .8370126 .5910681 0 2 monprec | 0 -------------+--------------------------------------------------------- mpre10 | 2,232,406 2.222179 2.228518 0 10 mpre6 | 2,232,406 1.822022 1.337952 0 6 llbmon | 2,232,406 48.43269 37.81028 1 99 llbyr | 2,232,406 77.17786 7.463976 34 99 disllb | 2,232,406 478.877 392.3077 0 999 -------------+--------------------------------------------------------- isllb17 | 2,232,406 5.674895 6.763531 0 21 isllb10 | 2,232,406 2.92148 3.4055 0 10 isllb8 | 2,232,406 2.369097 2.723887 0 8 lfdmon | 2,232,406 75.00558 19.509 1 99 lfdyr | 2,232,406 78.77658 5.547442 2 99 -------------+--------------------------------------------------------- dlfd | 2,232,406 755.245 202.8413 0 999 dterm | 2,232,406 485.9343 400.3602 0 999 term9 | 2,232,406 2.974024 3.285123 0 9 outcome | 2,232,406 .6340827 .7477974 0 3 mplbir | 2,232,406 29.33955 15.68537 1 99 -------------+--------------------------------------------------------- nprevis | 2,232,406 39.48171 38.30543 0 99 legitstrflg | 2,232,406 .7274107 .4452914 0 1 educstrflg | 2,232,406 .8033158 .3974916 0 1 lmprflg | 2,232,406 .8027662 .3979104 0 1 monprerflg | 2,232,406 .8866931 .3169676 0 1 -------------+--------------------------------------------------------- llbrflg | 2,232,406 .8251098 .3798733 0 1 lfdrflg | 2,232,406 .8096471 .3925796 0 1 legitsmsar~g | 2,232,406 .4261532 .4945167 0 1 educsmsarflg | 2,232,406 .4873688 .4998405 0 1 congenrflg | 2,232,406 .9041639 .2943664 0 1 -------------+--------------------------------------------------------- nprevisrflg | 2,232,406 .6591247 .4740036 0 1 injuryrflg | 2,232,406 .7698188 .4209488 0 1 legitstoflg | 2,232,406 .7305432 .4436777 0 1 educstoflg | 2,232,406 .8050198 .3961856 0 1 lmpoflg | 2,232,406 .8045396 .3965548 0 1 -------------+--------------------------------------------------------- monpreoflg | 2,232,406 .8903273 .3124814 0 1 llboflg | 2,232,406 .8267457 .3784671 0 1 lfdoflg | 2,232,406 .8111222 .3914116 0 1 congenflg | 2,232,406 .9071482 .2902248 0 1 nprevisoflg | 2,232,406 .6609429 .4733893 0 1 -------------+--------------------------------------------------------- injuryoflg | 2,232,406 .7721875 .4194211 0 1 attend | 2,232,406 1.145149 1.022691 1 9 recwt | 2,232,406 1.412627 .4923068 1 2 nprev28 | 2,232,406 7.89392 7.050288 0 28 by Jean Roth , jroth@nber.org , 3 Jan 2016