Summary statistics for natl1973 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 1,839,736 3 0 3 3 shipnum | 0 reparea | 0 rectype | 1,839,736 1.203626 .4026941 1 2 restatus | 1,839,736 1.233709 .4942756 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 1,839,736 4.61923 2.427348 0 9 stsubres | 1,839,736 49.68648 24.74303 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 1,839,736 4.639394 2.41951 1 9 stsubocc | 1,839,736 49.89394 24.65157 11 95 csex | 1,839,736 1.487154 .4998351 1 2 birattnd | 1,839,736 1.015028 .1782889 1 4 frace | 1,839,736 1.886351 2.31443 0 9 -------------+--------------------------------------------------------- mrace | 1,839,736 1.246568 .7672026 0 9 crace | 1,839,736 1.247422 .7314253 0 8 crace3 | 1,839,736 1.342066 .7387518 1 3 dmage | 1,839,736 24.41436 5.432676 10 49 mage36 | 1,839,736 11.41527 5.430819 1 36 -------------+--------------------------------------------------------- mage15 | 1,839,736 11.55077 3.511347 1 17 mage12 | 1,839,736 8.21495 1.659846 1 13 mage8 | 1,839,736 3.486084 1.126922 1 8 mage7 | 1,839,736 3.485464 1.124711 1 7 mage6 | 1,839,736 2.489537 1.117489 1 6 -------------+--------------------------------------------------------- nlbnl | 1,839,736 5.465043 18.68793 0 99 nlbnd | 1,839,736 6.303995 21.41204 0 99 nlbd | 1,839,736 6.21504 21.1676 0 99 dtotord | 1,839,736 6.355285 19.39478 1 99 totord9 | 1,839,736 2.573775 2.036017 1 9 -------------+--------------------------------------------------------- dlivord | 1,839,736 6.184048 19.35172 1 99 livord9 | 1,839,736 2.437412 1.962779 1 9 livord8 | 1,839,736 2.374067 1.772604 1 8 livord7 | 1,839,736 2.319644 1.614696 1 7 livord6 | 1,839,736 2.240251 1.418843 1 6 -------------+--------------------------------------------------------- livord3 | 1,839,736 1.645105 .5583674 1 3 dfage | 1,839,736 35.10748 22.6854 10 99 fage11 | 1,839,736 4.849969 2.440812 1 11 dbirwt | 1,839,736 3314.336 685.08 227 9999 birwt12 | 1,839,736 7.104442 1.236207 1 12 -------------+--------------------------------------------------------- birwt3 | 1,839,736 1.927335 .2698159 1 3 dplural | 1,839,736 1.018795 .138378 1 5 plural3 | 1,839,736 1.018772 .1379031 1 3 plural2 | 1,839,736 1.018473 .1346534 1 2 birmon | 1,839,736 6.536179 3.434886 1 12 -------------+--------------------------------------------------------- birday | 1,839,736 15.74419 8.829888 1 99 lmpmon | 1,839,736 26.5959 35.7211 1 99 lmpday | 1,839,736 43.51599 38.18793 1 99 lmpyr | 0 dgestat | 1,839,736 41.53189 30.14552 0 99 -------------+--------------------------------------------------------- gestat10 | 1,839,736 5.962977 3.382055 0 10 gestat3 | 1,839,736 1.707078 .9723528 0 3 dmeduc | 1,839,736 32.27309 34.03659 0 99 meduc14 | 1,839,736 6.144941 4.047109 0 14 meduc6 | 1,839,736 2.323291 1.638074 0 6 -------------+--------------------------------------------------------- dfeduc | 1,839,736 40.12446 37.84833 0 99 feduc14 | 1,839,736 7.00759 4.765822 0 14 dlegit | 1,839,736 3.296541 3.206719 1 9 legit3 | 1,839,736 .781785 .5954427 0 2 monprec | 0 -------------+--------------------------------------------------------- mpre10 | 1,839,736 2.323945 2.352974 0 10 mpre6 | 1,839,736 1.872957 1.397362 0 6 llbmon | 1,839,736 50.35751 38.1362 1 99 llbyr | 1,839,736 77.11242 8.681272 35 99 disllb | 1,839,736 498.1002 396.2259 0 999 -------------+--------------------------------------------------------- isllb17 | 1,839,736 5.634904 6.853745 0 21 isllb10 | 1,839,736 2.88394 3.423225 0 10 isllb8 | 1,839,736 2.339838 2.739211 0 8 lfdmon | 1,839,736 76.13016 18.62898 1 99 lfdyr | 1,839,736 79.24732 6.265643 1 99 -------------+--------------------------------------------------------- dlfd | 1,839,736 766.9453 193.2131 0 999 dterm | 1,839,736 508.7389 402.4976 0 999 term9 | 1,839,736 2.905717 3.293614 0 9 outcome | 1,839,736 .625742 .7651382 0 3 mplbir | 1,839,736 29.06124 15.72538 1 99 -------------+--------------------------------------------------------- nprevis | 1,839,736 44.08893 39.30972 0 99 legitstrflg | 1,839,736 .6859734 .4641271 0 1 educstrflg | 1,839,736 .7548083 .4302009 0 1 lmprflg | 1,839,736 .7965159 .4025896 0 1 monprerflg | 1,839,736 .8793028 .3257752 0 1 -------------+--------------------------------------------------------- llbrflg | 1,839,736 .7879 .4087954 0 1 lfdrflg | 1,839,736 .7680537 .422075 0 1 legitsmsar~g | 1,839,736 .4139425 .4925386 0 1 educsmsarflg | 1,839,736 .46522 .498789 0 1 congenrflg | 1,839,736 .9019202 .2974226 0 1 -------------+--------------------------------------------------------- nprevisrflg | 1,839,736 .6024109 .4893998 0 1 injuryrflg | 1,839,736 .7502745 .4328542 0 1 legitstoflg | 1,839,736 .6898077 .4625723 0 1 educstoflg | 1,839,736 .7575234 .4285812 0 1 lmpoflg | 1,839,736 .7984059 .4011908 0 1 -------------+--------------------------------------------------------- monpreoflg | 1,839,736 .8831289 .3212667 0 1 llboflg | 1,839,736 .7910999 .406523 0 1 lfdoflg | 1,839,736 .7709481 .4202228 0 1 congenflg | 1,839,736 .9050967 .2930814 0 1 nprevisoflg | 1,839,736 .6041459 .4890335 0 1 -------------+--------------------------------------------------------- injuryoflg | 1,839,736 .7529216 .4313128 0 1 recwt | 1,839,736 1.710096 .4537178 1 2 nprev28 | 1,839,736 7.212971 7.239761 0 28 by Jean Roth , jroth@nber.org , 3 Jan 2016