Summary statistics for natl1987 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 3,813,216 7 0 7 7 stresexp | 3,813,216 25.08953 15.32137 1 60 reparea | 0 rectype | 3,813,216 1.233034 .4227639 1 2 restatus | 3,813,216 1.259944 .4981929 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 3,813,216 5.123685 2.569383 0 9 stsubres | 3,813,216 54.75923 26.00547 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 3,813,216 5.132198 2.564455 1 9 stsubocc | 3,813,216 54.84946 25.94923 11 95 csex | 3,813,216 1.487806 .4998514 1 2 birattnd | 3,813,216 1.020002 .2161026 1 4 frace | 3,813,216 2.227575 2.735942 0 9 -------------+--------------------------------------------------------- mrace | 3,813,216 1.2556 .8519697 0 9 crace | 3,813,216 1.256546 .7961361 0 8 crace3 | 3,813,216 1.382572 .7568058 1 3 dmage | 3,813,216 26.13008 5.538464 10 49 mage36 | 3,813,216 13.1307 5.537016 1 36 -------------+--------------------------------------------------------- mage15 | 3,813,216 12.51321 3.178653 1 17 mage12 | 3,813,216 8.660059 1.532975 1 13 mage8 | 3,813,216 3.825659 1.144437 1 8 mage7 | 3,813,216 3.825298 1.143276 1 7 mage6 | 3,813,216 2.828003 1.137758 1 6 -------------+--------------------------------------------------------- nlbnl | 3,813,216 1.375716 6.235187 0 99 nlbnd | 3,813,216 .4315281 6.350539 0 99 nlbd | 3,813,216 .7494498 6.644487 0 99 dtotord | 3,813,216 2.777615 6.802273 1 99 totord9 | 3,813,216 2.339415 1.480062 1 9 -------------+--------------------------------------------------------- dlivord | 3,813,216 2.42159 6.387072 1 99 livord9 | 3,813,216 2.038954 1.260891 1 9 livord8 | 3,813,216 2.026717 1.206465 1 8 livord7 | 3,813,216 2.018441 1.171773 1 7 livord6 | 3,813,216 1.99742 1.103557 1 6 -------------+--------------------------------------------------------- livord3 | 3,813,216 1.59269 .4998079 1 3 dfage | 3,813,216 39.36461 25.12986 10 99 fage11 | 3,813,216 5.406377 2.576823 1 11 dbirwt | 3,813,216 3354.239 647.5606 227 9999 birwt12 | 3,813,216 7.19803 1.245846 1 12 -------------+--------------------------------------------------------- birwt3 | 3,813,216 1.932425 .2560417 1 3 pldel | 3,813,216 1.012255 .1600713 1 9 dplural | 3,813,216 1.022587 .152312 1 3 plural3 | 3,813,216 1.022587 .152312 1 3 plural2 | 3,813,216 1.022026 .146769 1 2 -------------+--------------------------------------------------------- birmon | 3,813,216 6.58107 3.412543 1 12 birday | 3,813,216 15.74083 8.787595 1 99 lmpmon | 3,813,216 9.749444 17.07594 1 99 lmpday | 3,813,216 30.22293 33.06106 1 99 lmpyr | 0 -------------+--------------------------------------------------------- dgestat | 3,813,216 41.74099 12.23791 17 99 gestat10 | 3,813,216 6.851947 1.522446 1 10 gestat3 | 3,813,216 1.943747 .3688015 1 3 dmeduc | 3,813,216 33.44103 36.97458 0 99 meduc14 | 3,813,216 9.946306 3.02045 1 14 -------------+--------------------------------------------------------- meduc6 | 3,813,216 3.967821 1.468159 1 6 dfeduc | 3,813,216 44.26645 41.35322 0 99 feduc14 | 3,813,216 10.88015 3.023309 1 14 dmar | 3,813,216 1.246539 .4450275 1 9 mar2 | 3,813,216 1.244783 .4299585 1 2 -------------+--------------------------------------------------------- monprec | 0 mpre10 | 3,813,216 2.253508 2.068028 1 10 mpre6 | 3,813,216 1.866427 1.172524 1 6 llbmon | 3,813,216 42.87329 37.50443 1 99 llbyr | 3,813,216 81.6662 5.797928 1 99 -------------+--------------------------------------------------------- disllb | 3,813,216 421.8333 388.908 0 999 isllb17 | 3,813,216 7.282228 7.308771 0 21 isllb10 | 3,813,216 3.708286 3.607427 0 10 isllb8 | 3,813,216 2.997407 2.871518 0 8 lfdmon | 3,813,216 69.22582 25.57198 1 99 -------------+--------------------------------------------------------- lfdyr | 3,813,216 78.72252 4.391132 1 99 lfdflg | 3,813,216 .1363573 .3431677 0 1 dlfd | 3,813,216 695.9236 264.9048 0 999 dterm | 3,813,216 415.9443 404.3293 0 999 term9 | 3,813,216 3.909095 3.365263 0 9 -------------+--------------------------------------------------------- outcome | 3,813,216 .829139 .73163 0 3 mplbir | 3,813,216 30.12041 17.31072 1 99 nprevis | 3,813,216 24.47699 32.07882 0 99 congen | 3,813,216 .0107072 .1029203 0 1 marstrflg | 3,813,216 .9989977 .0316433 0 1 -------------+--------------------------------------------------------- educstrflg | 3,813,216 .7693396 .4212555 0 1 lmprflg | 3,813,216 .9989977 .0316433 0 1 monprerflg | 3,813,216 .9989977 .0316433 0 1 llbrflg | 3,813,216 .9198094 .2715881 0 1 lfdrflg | 3,813,216 .9198094 .2715881 0 1 -------------+--------------------------------------------------------- marsmsarflg | 3,813,216 .7788856 .4149974 0 1 educsmsarflg | 3,813,216 .56659 .495546 0 1 congenrflg | 3,813,216 .8166458 .3869566 0 1 nprevisrflg | 3,813,216 .8669797 .3395967 0 1 ethnicrflg | 3,813,216 .9373524 .8366495 0 2 -------------+--------------------------------------------------------- omapsrflg | 3,813,216 .7726415 .4191261 0 1 fmapsrflg | 3,813,216 .7726415 .4191261 0 1 marstoflg | 3,813,216 1 0 1 1 educstoflg | 3,813,216 1 0 1 1 lmpoflg | 3,813,216 1 0 1 1 -------------+--------------------------------------------------------- monpreoflg | 3,813,216 1 0 1 1 llboflg | 3,813,216 1 0 1 1 lfdoflg | 3,813,216 1 0 1 1 congenflg | 3,813,216 1 0 1 1 nprevisoflg | 3,813,216 1 0 1 1 -------------+--------------------------------------------------------- ethnicoflg | 3,813,216 .9437808 .8365487 0 2 omapsoflg | 3,813,216 1 0 1 1 fmapsoflg | 3,813,216 1 0 1 1 attend | 3,813,216 1.048824 .3203976 1 9 oterml20 | 3,813,216 12.60272 30.51715 0 99 -------------+--------------------------------------------------------- otermm20 | 3,813,216 12.37932 30.63923 0 99 omaps | 3,813,216 29.56375 38.70012 0 99 omapsr | 3,813,216 3.706713 .9429929 1 5 fmaps | 3,813,216 30.31659 38.28693 0 99 fmapsr | 3,813,216 4.132945 .6045371 1 5 -------------+--------------------------------------------------------- origm | 3,813,216 37.27476 41.27561 0 99 origf | 3,813,216 44.10301 43.10483 0 99 gestimp | 543,910 1 0 1 1 regnres | 3,813,216 2.606986 1.043683 0 4 regnocc | 3,813,216 2.610639 1.040424 1 4 -------------+--------------------------------------------------------- stoccfip | 0 cntocfip | 0 stresfip | 0 cntyrfip | 0 smsarfip | 0 -------------+--------------------------------------------------------- recwt | 3,813,216 1 0 1 1 nprev28 | 3,813,216 14.33856 6.928019 1 28 nprev12 | 3,813,216 7.425918 2.667821 1 12 stnatexp | 3,813,216 25.05951 15.31382 1 52 by Jean Roth , jroth@nber.org , 3 Jan 2016