Summary statistics for natl1980 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 3,310,301 0 0 0 0 shipnum | 0 reparea | 0 rectype | 3,310,301 1.231331 .4216833 1 2 restatus | 3,310,301 1.260117 .5031756 1 4 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 smsares | 0 -------------+--------------------------------------------------------- metrores | 0 divres | 3,310,301 4.783442 2.403813 0 9 stsubres | 3,310,301 51.2193 24.39447 0 95 statenat | 0 cntynat | 0 -------------+--------------------------------------------------------- divocc | 3,310,301 4.795397 2.397343 1 9 stsubocc | 3,310,301 51.34275 24.3211 11 95 csex | 3,310,301 1.487225 .4998369 1 2 birattnd | 3,310,301 1.021054 .2200138 1 4 frace | 3,310,301 2.060673 2.553689 0 9 -------------+--------------------------------------------------------- mrace | 3,310,301 1.239455 .787536 0 9 crace | 3,310,301 1.232619 .6981995 0 8 crace3 | 3,310,301 1.35927 .7472377 1 3 dmage | 3,310,301 24.97824 5.241985 10 49 mage36 | 3,310,301 11.97886 5.240613 1 36 -------------+--------------------------------------------------------- mage15 | 3,310,301 11.95695 3.287225 1 17 mage12 | 3,310,301 8.394523 1.523011 1 13 mage8 | 3,310,301 3.594267 1.086333 1 8 mage7 | 3,310,301 3.593939 1.085153 1 7 mage6 | 3,310,301 2.596756 1.079699 1 6 -------------+--------------------------------------------------------- nlbnl | 3,310,301 1.66413 8.29747 0 99 nlbnd | 3,310,301 .7513921 8.425212 0 99 nlbd | 3,310,301 3.460412 17.55205 0 99 dtotord | 3,310,301 5.423439 17.32667 1 99 totord9 | 3,310,301 2.446299 1.826382 1 9 -------------+--------------------------------------------------------- dlivord | 3,310,301 2.725259 8.444547 1 99 livord9 | 3,310,301 2.045853 1.353605 1 9 livord8 | 3,310,301 2.028108 1.277801 1 8 livord7 | 3,310,301 2.015036 1.225054 1 7 livord6 | 3,310,301 1.987685 1.137735 1 6 -------------+--------------------------------------------------------- livord3 | 3,310,301 1.579458 .5085457 1 3 dfage | 3,310,301 36.97442 24.12275 10 99 fage11 | 3,310,301 5.067627 2.521696 1 11 dbirwt | 3,310,301 3358.035 686.8793 227 9999 birwt12 | 3,310,301 7.194141 1.245655 1 12 -------------+--------------------------------------------------------- birwt3 | 3,310,301 1.934189 .2583398 1 3 pldel | 3,310,301 1.011842 .1309824 1 9 dplural | 3,310,301 1.019843 .1421644 1 3 plural3 | 3,310,301 1.019843 .1421644 1 3 plural2 | 3,310,301 1.019463 .1381441 1 2 -------------+--------------------------------------------------------- birmon | 3,310,301 6.579822 3.421729 1 12 birday | 3,310,301 15.77388 8.809213 1 99 lmpmon | 3,310,301 10.76273 19.44543 1 99 lmpday | 3,310,301 31.77678 34.23079 1 99 lmpyr | 0 -------------+--------------------------------------------------------- dgestat | 3,310,301 51.58637 24.03842 17 99 gestat10 | 3,310,301 7.504751 1.780724 1 10 gestat3 | 3,310,301 2.131836 .5061622 1 3 dmeduc | 3,310,301 27.62235 33.08068 0 99 meduc14 | 3,310,301 9.35625 2.948421 1 14 -------------+--------------------------------------------------------- meduc6 | 3,310,301 3.679771 1.426148 1 6 dfeduc | 3,310,301 37.75375 39.0994 0 99 feduc14 | 3,310,301 10.3587 3.103729 1 14 dmar | 3,310,301 1.196709 .5151074 1 9 mar2 | 3,310,301 1.181378 .3853309 1 2 -------------+--------------------------------------------------------- monprec | 0 mpre10 | 3,310,301 2.263884 2.035805 1 10 mpre6 | 3,310,301 1.895735 1.165992 1 6 llbmon | 3,310,301 45.70434 37.7967 1 99 llbyr | 3,310,301 78.81748 6.900572 41 99 -------------+--------------------------------------------------------- disllb | 3,310,301 450.7558 392.1442 0 999 isllb17 | 3,310,301 7.258204 7.503913 0 21 isllb10 | 3,310,301 3.679921 3.688142 0 10 isllb8 | 3,310,301 2.973431 2.937777 0 8 lfdmon | 3,310,301 70.82668 24.04797 1 99 -------------+--------------------------------------------------------- lfdyr | 3,310,301 77.89222 4.776125 4 99 dlfd | 3,310,301 712.0639 249.987 0 999 dterm | 3,310,301 455.578 409.1574 0 999 term9 | 3,310,301 3.936221 3.472995 0 9 outcome | 3,310,301 .8682745 .8339111 0 3 -------------+--------------------------------------------------------- mplbir | 3,310,301 30.08275 16.13565 1 99 nprevis | 3,310,301 18.98333 26.46148 0 99 congen | 3,310,301 .0095982 .0974992 0 1 marstrflg | 3,310,301 .9984222 .0396902 0 1 educstrflg | 3,310,301 .8343229 .3717906 0 1 -------------+--------------------------------------------------------- lmprflg | 3,310,301 .9825641 .1308888 0 1 monprerflg | 3,310,301 .9984222 .0396902 0 1 llbrflg | 3,310,301 .890996 .3116443 0 1 lfdrflg | 3,310,301 .890996 .3116443 0 1 marsmsarflg | 3,310,301 .7350836 .4412887 0 1 -------------+--------------------------------------------------------- educsmsarflg | 3,310,301 .5880441 .4921873 0 1 congenrflg | 3,310,301 .8672776 .3392745 0 1 nprevisrflg | 3,310,301 .9332792 .2495379 0 1 ethnicrflg | 3,310,301 .730935 .7614487 0 2 omapsrflg | 3,310,301 .7909544 .4066271 0 1 -------------+--------------------------------------------------------- fmapsrflg | 3,310,301 .7807166 .4137611 0 1 marstoflg | 3,310,301 1 0 1 1 educstoflg | 3,310,301 1 0 1 1 lmpoflg | 3,310,301 1 0 1 1 monpreoflg | 3,310,301 1 0 1 1 -------------+--------------------------------------------------------- llboflg | 3,310,301 1 0 1 1 lfdoflg | 3,310,301 1 0 1 1 congenflg | 3,310,301 1 0 1 1 nprevisoflg | 3,310,301 1 0 1 1 ethnicoflg | 3,310,301 .7310861 .7623454 0 2 -------------+--------------------------------------------------------- omapsoflg | 3,310,301 1 0 1 1 fmapsoflg | 3,310,301 1 0 1 1 attend | 3,310,301 1.042622 .375825 1 9 oterml20 | 3,310,301 17.39991 35.27815 0 99 otermm20 | 3,310,301 14.81302 33.01303 0 99 -------------+--------------------------------------------------------- omaps | 3,310,301 28.9505 38.25729 0 99 omapsr | 3,310,301 3.728007 .9328886 1 5 fmaps | 3,310,301 30.57601 38.33018 0 99 fmapsr | 3,310,301 4.126802 .6208584 1 5 origm | 3,310,301 46.16504 41.6995 0 99 -------------+--------------------------------------------------------- origf | 3,310,301 51.35398 42.17799 0 99 recwt | 3,310,301 1.092946 .2903571 1 2 nprev28 | 3,310,301 12.99488 6.065906 1 28 nprev12 | 3,310,301 6.919834 2.411424 1 12 by Jean Roth , jroth@nber.org , 3 Jan 2016