Summary statistics for natl1988 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 3,913,793 8 0 8 8 stresexp | 3,913,793 24.95491 15.33447 1 60 reparea | 0 rectype | 3,913,793 1.234376 .4236084 1 2 restatus | 3,913,793 1.261453 .4994374 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 3,913,793 5.134253 2.577936 0 9 stsubres | 3,913,793 54.86984 26.09139 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 3,913,793 5.143249 2.572625 1 9 stsubocc | 3,913,793 54.96501 26.03116 11 95 csex | 3,913,793 1.487816 .4998516 1 2 birattnd | 3,913,793 1.020252 .2156756 1 4 frace | 3,913,793 2.280524 2.788054 0 9 -------------+--------------------------------------------------------- mrace | 3,913,793 1.260992 .8614007 0 9 crace | 3,913,793 1.262692 .8074209 0 8 crace3 | 3,913,793 1.392361 .762791 1 3 dmage | 3,913,793 26.25236 5.60408 10 49 mage36 | 3,913,793 13.25297 5.602655 1 36 -------------+--------------------------------------------------------- mage15 | 3,913,793 12.54921 3.192439 1 17 mage12 | 3,913,793 8.684222 1.543918 1 13 mage8 | 3,913,793 3.849356 1.158326 1 8 mage7 | 3,913,793 3.848991 1.157175 1 7 mage6 | 3,913,793 2.851696 1.151666 1 6 -------------+--------------------------------------------------------- nlbnl | 3,913,793 1.509166 7.130924 0 99 nlbnd | 3,913,793 .5721654 7.35628 0 99 nlbd | 3,913,793 .9575207 7.927483 0 99 dtotord | 3,913,793 2.994346 8.024213 1 99 totord9 | 3,913,793 2.379452 1.522998 1 9 -------------+--------------------------------------------------------- dlivord | 3,913,793 2.571103 7.358757 1 99 livord9 | 3,913,793 2.059502 1.292635 1 9 livord8 | 3,913,793 2.045788 1.232161 1 8 livord7 | 3,913,793 2.036072 1.191767 1 7 livord6 | 3,913,793 2.013385 1.11864 1 6 -------------+--------------------------------------------------------- livord3 | 3,913,793 1.597496 .5017593 1 3 dfage | 3,913,793 39.86463 25.46755 10 99 fage11 | 3,913,793 5.464973 2.603728 1 11 dbirwt | 3,913,793 3353.028 642.0953 227 9999 birwt12 | 3,913,793 7.197082 1.245931 1 12 -------------+--------------------------------------------------------- birwt3 | 3,913,793 1.931864 .2562418 1 3 pldel | 3,913,793 1.012482 .1591435 1 9 dplural | 3,913,793 1.023041 .1540529 1 3 plural3 | 3,913,793 1.023041 .1540529 1 3 plural2 | 3,913,793 1.02243 .1480762 1 2 -------------+--------------------------------------------------------- birmon | 3,913,793 6.580573 3.404186 1 12 birday | 3,913,793 15.77278 8.792246 1 99 lmpmon | 3,913,793 9.907548 17.41923 1 99 lmpday | 3,913,793 29.99533 32.85111 1 99 lmpyr | 0 -------------+--------------------------------------------------------- dgestat | 3,913,793 41.80426 12.38396 17 99 gestat10 | 3,913,793 6.852666 1.524111 1 10 gestat3 | 3,913,793 1.944719 .3706539 1 3 dmeduc | 3,913,793 36.91367 38.86795 0 99 meduc14 | 3,913,793 10.15792 3.084531 1 14 -------------+--------------------------------------------------------- meduc6 | 3,913,793 4.074776 1.502482 1 6 dfeduc | 3,913,793 47.70404 42.18362 0 99 feduc14 | 3,913,793 11.07168 3.027259 1 14 dmar | 3,913,793 1.258633 .4508917 1 9 mar2 | 3,913,793 1.256982 .4369693 1 2 -------------+--------------------------------------------------------- monprec | 0 mpre10 | 3,913,793 2.266113 2.090133 1 10 mpre6 | 3,913,793 1.872316 1.184688 1 6 llbmon | 3,913,793 43.11846 37.64016 1 99 llbyr | 3,913,793 81.77817 5.009707 1 99 -------------+--------------------------------------------------------- disllb | 3,913,793 424.4019 390.229 0 999 isllb17 | 3,913,793 7.370121 7.365495 0 21 isllb10 | 3,913,793 3.748926 3.629155 0 10 isllb8 | 3,913,793 3.030034 2.887938 0 8 lfdmon | 3,913,793 69.09159 25.97571 1 99 -------------+--------------------------------------------------------- lfdyr | 3,913,793 79.04668 4.785125 2 99 lfdflg | 3,913,793 .140638 .3476478 0 1 dlfd | 3,913,793 694.4981 269.0174 0 999 dterm | 3,913,793 419.705 406.6227 0 999 term9 | 3,913,793 3.968279 3.381456 0 9 -------------+--------------------------------------------------------- outcome | 3,913,793 .8513598 .7507341 0 3 mplbir | 3,913,793 30.2803 17.45448 1 99 nprevis | 3,913,793 24.91117 32.46774 0 99 congen | 3,913,793 .0092803 .0958861 0 1 marstrflg | 3,913,793 .9989057 .0330626 0 1 -------------+--------------------------------------------------------- educstrflg | 3,913,793 .7274884 .4452517 0 1 lmprflg | 3,913,793 .9989057 .0330626 0 1 monprerflg | 3,913,793 .9989057 .0330626 0 1 llbrflg | 3,913,793 .9213804 .2691442 0 1 lfdrflg | 3,913,793 .9213804 .2691442 0 1 -------------+--------------------------------------------------------- marsmsarflg | 3,913,793 .782788 .4123482 0 1 educsmsarflg | 3,913,793 .4993179 .4999996 0 1 congenrflg | 3,913,793 .811733 .3909253 0 1 nprevisrflg | 3,913,793 .8626828 .3441819 0 1 ethnicrflg | 3,913,793 1.141907 .8136732 0 2 -------------+--------------------------------------------------------- omapsrflg | 3,913,793 .7703857 .4205849 0 1 fmapsrflg | 3,913,793 .7703857 .4205849 0 1 marstoflg | 3,913,793 1 0 1 1 educstoflg | 3,913,793 1 0 1 1 lmpoflg | 3,913,793 1 0 1 1 -------------+--------------------------------------------------------- monpreoflg | 3,913,793 1 0 1 1 llboflg | 3,913,793 1 0 1 1 lfdoflg | 3,913,793 1 0 1 1 congenflg | 3,913,793 1 0 1 1 nprevisoflg | 3,913,793 1 0 1 1 -------------+--------------------------------------------------------- ethnicoflg | 3,913,793 1.147872 .8117446 0 2 omapsoflg | 3,913,793 1 0 1 1 fmapsoflg | 3,913,793 1 0 1 1 attend | 3,913,793 1.05364 .3333675 1 9 oterml20 | 3,913,793 14.84335 32.65928 0 99 -------------+--------------------------------------------------------- otermm20 | 3,913,793 14.61317 32.83092 0 99 omaps | 3,913,793 29.57061 38.69547 0 99 omapsr | 3,913,793 3.710168 .9402093 1 5 fmaps | 3,913,793 30.30742 38.28567 0 99 fmapsr | 3,913,793 4.135753 .6004801 1 5 -------------+--------------------------------------------------------- origm | 3,913,793 29.63383 39.59141 0 99 origf | 3,913,793 37.95561 43.17437 0 99 gestimp | 541,767 1 0 1 1 regnres | 3,913,793 2.611759 1.047074 0 4 regnocc | 3,913,793 2.615602 1.043554 1 4 -------------+--------------------------------------------------------- stoccfip | 0 cntocfip | 0 stresfip | 0 cntyrfip | 0 smsarfip | 0 -------------+--------------------------------------------------------- recwt | 3,913,793 1 0 1 1 nprev28 | 3,913,793 14.42835 6.988188 1 28 nprev12 | 3,913,793 7.458369 2.68413 1 12 stnatexp | 3,913,793 24.92701 15.32507 1 52 by Jean Roth , jroth@nber.org , 3 Jan 2016