Summary statistics for natl1981 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 3,319,054 1 0 1 1 shipnum | 0 reparea | 0 rectype | 3,319,054 1.232153 .4222063 1 2 restatus | 3,319,054 1.260991 .5039723 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 3,319,054 4.805817 2.419144 0 9 stsubres | 3,319,054 51.45676 24.54805 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 3,319,054 4.818637 2.411913 1 9 stsubocc | 3,319,054 51.58986 24.46613 11 95 csex | 3,319,054 1.487437 .4998422 1 2 birattnd | 3,319,054 1.0229 .2308895 1 4 frace | 3,319,054 2.055333 2.551125 0 9 -------------+--------------------------------------------------------- mrace | 3,319,054 1.234602 .7827421 0 9 crace | 3,319,054 1.228226 .6942466 0 8 crace3 | 3,319,054 1.358805 .7455561 1 3 dmage | 3,319,054 25.14301 5.254715 10 49 mage36 | 3,319,054 12.14358 5.253436 1 36 -------------+--------------------------------------------------------- mage15 | 3,319,054 12.05346 3.247777 1 17 mage12 | 3,319,054 8.438032 1.504884 1 13 mage8 | 3,319,054 3.625985 1.086564 1 8 mage7 | 3,319,054 3.625661 1.085406 1 7 mage6 | 3,319,054 2.628314 1.080194 1 6 -------------+--------------------------------------------------------- nlbnl | 3,319,054 1.459514 7.033504 0 99 nlbnd | 3,319,054 .5361922 7.076379 0 99 nlbd | 3,319,054 1.13083 9.291026 0 99 dtotord | 3,319,054 3.132196 9.326656 1 99 totord9 | 3,319,054 2.295375 1.524996 1 9 -------------+--------------------------------------------------------- dlivord | 3,319,054 2.505545 7.128788 1 99 livord9 | 3,319,054 2.025105 1.302399 1 9 livord8 | 3,319,054 2.010273 1.237752 1 8 livord7 | 3,319,054 1.999913 1.195145 1 7 livord6 | 3,319,054 1.975769 1.11725 1 6 -------------+--------------------------------------------------------- livord3 | 3,319,054 1.577015 .5045755 1 3 dfage | 3,319,054 37.07674 24.03939 10 99 fage11 | 3,319,054 5.089513 2.509559 1 11 dbirwt | 3,319,054 3353.069 662.7837 227 9999 birwt12 | 3,319,054 7.19032 1.238856 1 12 -------------+--------------------------------------------------------- birwt3 | 3,319,054 1.933663 .2563838 1 3 pldel | 3,319,054 1.012661 .1344276 1 9 dplural | 3,319,054 1.020176 .1433121 1 3 plural3 | 3,319,054 1.020176 .1433121 1 3 plural2 | 3,319,054 1.019791 .1392821 1 2 -------------+--------------------------------------------------------- birmon | 3,319,054 6.583206 3.415252 1 12 birday | 3,319,054 15.74088 8.793796 1 99 lmpmon | 3,319,054 9.77289 17.099 1 99 lmpday | 3,319,054 31.19221 33.83024 1 99 lmpyr | 0 -------------+--------------------------------------------------------- dgestat | 3,319,054 41.88473 12.13515 17 99 gestat10 | 3,319,054 6.955882 1.527728 1 10 gestat3 | 3,319,054 1.95048 .3591917 1 3 dmeduc | 3,319,054 28.14024 33.45116 0 99 meduc14 | 3,319,054 9.436833 2.958405 1 14 -------------+--------------------------------------------------------- meduc6 | 3,319,054 3.719554 1.428729 1 6 dfeduc | 3,319,054 38.25187 39.28838 0 99 feduc14 | 3,319,054 10.42133 3.088647 1 14 dmar | 3,319,054 1.192187 .4437632 1 9 mar2 | 3,319,054 1.186233 .389295 1 2 -------------+--------------------------------------------------------- monprec | 0 mpre10 | 3,319,054 2.248111 2.015305 1 10 mpre6 | 3,319,054 1.884814 1.15524 1 6 llbmon | 3,319,054 44.49686 37.54802 1 99 llbyr | 3,319,054 79.01353 6.361949 40 99 -------------+--------------------------------------------------------- disllb | 3,319,054 438.2092 389.75 0 999 isllb17 | 3,319,054 7.103822 7.356642 0 21 isllb10 | 3,319,054 3.609695 3.623016 0 10 isllb8 | 3,319,054 2.917799 2.885908 0 8 lfdmon | 3,319,054 69.86461 24.38896 1 99 -------------+--------------------------------------------------------- lfdyr | 3,319,054 77.5553 3.536346 1 99 lfdflg | 3,319,054 .124327 .3299543 0 1 dlfd | 3,319,054 702.228 253.6225 0 999 dterm | 3,319,054 441.5402 406.1036 0 999 term9 | 3,319,054 3.833331 3.418129 0 9 -------------+--------------------------------------------------------- outcome | 3,319,054 .8388071 .8009881 0 3 mplbir | 3,319,054 30.20732 16.19277 1 99 nprevis | 3,319,054 18.92979 26.25306 0 99 congen | 3,319,054 .0101508 .1002385 0 1 marstrflg | 3,319,054 .9982814 .0414199 0 1 -------------+--------------------------------------------------------- educstrflg | 3,319,054 .8289498 .3765529 0 1 lmprflg | 3,319,054 .9940582 .0768534 0 1 monprerflg | 3,319,054 .9982814 .0414199 0 1 llbrflg | 3,319,054 .9134648 .2811528 0 1 lfdrflg | 3,319,054 .9134648 .2811528 0 1 -------------+--------------------------------------------------------- marsmsarflg | 3,319,054 .7397044 .4387959 0 1 educsmsarflg | 3,319,054 .5873707 .4923073 0 1 congenrflg | 3,319,054 .8801818 .3247488 0 1 nprevisrflg | 3,319,054 .9305435 .2542289 0 1 ethnicrflg | 3,319,054 .7353785 .7614181 0 2 -------------+--------------------------------------------------------- omapsrflg | 3,319,054 .8308593 .3748762 0 1 fmapsrflg | 3,319,054 .8323269 .3735758 0 1 marstoflg | 3,319,054 1 0 1 1 educstoflg | 3,319,054 1 0 1 1 lmpoflg | 3,319,054 1 0 1 1 -------------+--------------------------------------------------------- monpreoflg | 3,319,054 1 0 1 1 llboflg | 3,319,054 1 0 1 1 lfdoflg | 3,319,054 1 0 1 1 congenflg | 3,319,054 1 0 1 1 nprevisoflg | 3,319,054 1 0 1 1 -------------+--------------------------------------------------------- ethnicoflg | 3,319,054 .7357566 .7623748 0 2 omapsoflg | 3,319,054 1 0 1 1 fmapsoflg | 3,319,054 1 0 1 1 attend | 3,319,054 1.076228 .6320626 1 9 oterml20 | 3,319,054 13.65524 31.70615 0 99 -------------+--------------------------------------------------------- otermm20 | 3,319,054 13.15447 31.43402 0 99 omaps | 3,319,054 25.49319 35.83586 0 99 omapsr | 3,319,054 3.651605 .918023 1 5 fmaps | 3,319,054 26.19913 35.31407 0 99 fmapsr | 3,319,054 4.068406 .6013645 1 5 -------------+--------------------------------------------------------- origm | 3,319,054 45.62718 41.66034 0 99 origf | 3,319,054 50.89104 42.20714 0 99 smsarfip | 0 recwt | 3,319,054 1.095347 .2936933 1 2 nprev28 | 3,319,054 13.05244 6.033253 1 28 -------------+--------------------------------------------------------- nprev12 | 3,319,054 6.95137 2.404041 1 12 by Jean Roth , jroth@nber.org , 3 Jan 2016