Summary statistics for natl2001 dataset : by Jean Roth , jroth@nber.org , 22 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- datayear | 4031531 2001 0 2001 2001 rectype | 4031531 1.249882 .4329445 1 2 restatus | 4031531 1.274425 .5009781 1 4 recwt | 4031531 1 0 1 1 pldel | 4031531 1.023414 .2626975 1 9 -------------+-------------------------------------------------------- pldel3 | 4031531 1.009577 .098223 1 3 birattnd | 4031531 1.23184 .6615654 1 9 regnocc | 4031531 2.683372 1.020123 1 4 stocc | 4031531 324.8856 126.8868 111 495 divocc | 4031531 5.288431 2.522887 1 9 -------------+-------------------------------------------------------- stnatexp | 0 statenat | 0 cntynat | 0 stoccfip | 0 cntocfip | 0 -------------+-------------------------------------------------------- cntocpop | 0 regnres | 4031531 2.678452 1.024961 0 4 stsubres | 4031531 324.2717 127.4546 0 495 divres | 4031531 5.276945 2.53 0 9 stresexp | 0 -------------+-------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 metrores | 0 -------------+-------------------------------------------------------- stresfip | 0 cntyrfip | 0 placefip | 0 cmsa | 0 smsarfip | 0 -------------+-------------------------------------------------------- cntrspop | 0 magerflg | 195401 1 0 1 1 mageimp | 0 dmage | 4031531 27.25395 6.192978 10 54 mage36 | 4031531 14.25439 6.191976 1 41 -------------+-------------------------------------------------------- mage12 | 4031531 8.917356 1.586222 1 14 mage8 | 4031531 4.051862 1.273746 1 9 ormoth | 4031531 .4375474 1.196575 0 9 orracem | 4031531 5.38692 2.061522 1 9 mraceimp | 0 -------------+-------------------------------------------------------- mrace | 4031531 2.856614 10.00386 1 78 mrace3 | 4031531 1.360894 .7289998 1 3 dmeduc | 4031531 14.04673 10.48577 0 99 meduc6 | 4031531 3.476981 1.223106 1 6 dmarimp | 0 -------------+-------------------------------------------------------- dmar | 4031531 1.334966 .4719787 1 2 mplbir | 4031531 33.00478 18.88029 1 99 mplbirr | 4031531 1.230984 .4277128 1 3 dmagerpt | 4031531 92.21941 20.98054 11 99 adequacy | 4031531 1.420879 .7913218 1 4 -------------+-------------------------------------------------------- nlbnl | 4031531 1.306864 5.182093 0 99 nlbnd | 4031531 .3448107 5.670977 0 99 noterm | 4031531 .732833 6.070445 0 99 dlivord | 4031531 2.400865 5.823836 1 99 livord9 | 4031531 2.084468 1.274116 1 9 -------------+-------------------------------------------------------- dtotord | 4031531 2.772576 5.91002 1 99 totord9 | 4031531 2.441882 1.547731 1 9 monpre | 4031531 4.717989 14.73223 0 99 mpre6 | 4031531 1.675351 1.107912 1 6 mpre5 | 4031531 1.304639 .78152 1 5 -------------+-------------------------------------------------------- nprevis | 4031531 14.24155 15.65548 0 99 nprev12 | 4031531 7.075803 2.034853 1 12 lmpmon | 4031531 11.17548 20.29145 1 99 lmpday | 4031531 24.37238 27.64373 1 99 lmpyr | 4031531 2390.984 1724.17 2000 9999 -------------+-------------------------------------------------------- flgbwimp | 1910 1 0 1 1 bwimp | 1910 2071.613 1431.188 227 5273 fagerflg | 162243 1 0 1 1 dfage | 4031531 39.63071 24.27973 10 99 fage11 | 4031531 5.530108 2.519243 1 11 -------------+-------------------------------------------------------- orfath | 4031531 1.580966 3.119703 0 9 orracef | 4031531 5.835276 2.295121 1 9 frace | 4031531 16.4254 34.75227 1 99 frace4 | 4031531 1.69183 1.130698 1 4 dfagerpt | 4031531 93.38027 18.82103 12 99 -------------+-------------------------------------------------------- fraceimp | 13571 3 0 3 3 cdobmimp | 1 1 . 1 1 birmon | 4031531 6.536659 3.41671 1 12 biryr | 4031531 2001 0 2001 2001 weekday | 4031531 4.065298 1.856484 1 7 -------------+-------------------------------------------------------- gestestm | 192683 1 0 1 1 gestimp | 242897 1 0 1 1 dgestat | 4031531 39.31053 6.498559 17 99 gestat10 | 4031531 6.431949 1.29879 1 10 gestat3 | 4031531 1.891649 .3411631 1 3 -------------+-------------------------------------------------------- cseximp | 83 1 0 1 1 csex | 4031531 1.488839 .4998755 1 2 dbirwt | 4031531 3311.352 632.4172 227 9999 birwt12 | 4031531 7.115818 1.24471 1 12 birwt4 | 4031531 2.909769 .3352578 1 4 -------------+-------------------------------------------------------- plurimp | 90 1 0 1 1 dplural | 4031531 1.033984 .1930259 1 5 fmaps | 4031531 29.20008 37.64249 0 99 fmapsr | 4031531 4.136075 .5747718 1 5 clingest | 4031531 46.8505 20.80492 17 99 -------------+-------------------------------------------------------- vaginal | 4031531 1.291162 .7321023 1 9 vbac | 4031531 2.023873 .5523989 1 9 primac | 4031531 1.89307 .651984 1 9 repeac | 4031531 1.94872 .6150101 1 9 forcep | 4031531 2.024716 .5515979 1 9 -------------+-------------------------------------------------------- vacuum | 4031531 1.997081 .576626 1 9 delmeth5 | 4031531 1.622182 1.081329 1 5 anemia | 4031531 2.048552 .7257647 1 9 cardiac | 4031531 2.068113 .7105572 1 9 lung | 4031531 2.06128 .715967 1 9 -------------+-------------------------------------------------------- diabetes | 4031531 2.042429 .7303521 1 9 herpes | 4031531 2.60588 1.84079 1 9 hydra | 4031531 2.05968 .717218 1 9 hemo | 4031531 2.072468 .7070533 1 9 chyper | 4031531 2.065252 .7128352 1 9 -------------+-------------------------------------------------------- phyper | 4031531 2.035959 .7351137 1 9 eclamp | 4031531 2.070115 .7089519 1 9 incervix | 4031531 2.070456 .7086773 1 9 pre4000 | 4031531 2.062999 .7146156 1 9 preterm | 4031531 2.061262 .715981 1 9 -------------+-------------------------------------------------------- renal | 4031531 2.070259 .7088358 1 9 rh | 4031531 2.128159 .9316407 1 9 uterine | 4031531 2.608916 1.838963 1 9 othermr | 4031531 1.893495 .8202474 1 9 tobacco | 4031531 2.86647 2.478095 1 9 -------------+-------------------------------------------------------- cigar | 4031531 15.82319 35.16441 0 99 cigar6 | 4031531 1.094841 2.18089 0 9 alcohol | 4031531 2.974469 2.435355 1 9 drink | 4031531 13.97647 34.43547 0 99 drink5 | 4031531 .7284049 1.77331 0 9 -------------+-------------------------------------------------------- wtgain | 4031531 43.8772 29.52688 0 99 wtgain9 | 4031531 5.251664 2.679336 1 9 amnio | 4031531 2.019216 .5479891 1 9 monitor | 4031531 1.198283 .691986 1 9 induct | 4031531 1.837648 .6751824 1 9 -------------+-------------------------------------------------------- stimula | 4031531 1.866735 .6598356 1 9 tocol | 4031531 2.020041 .5472064 1 9 ultras | 4031531 1.372282 .74402 1 9 otherob | 4031531 1.975059 .5866828 1 9 febrile | 4031531 2.036764 .6079179 1 9 -------------+-------------------------------------------------------- meconium | 4031531 2.000874 .6378127 1 9 rupture | 4031531 2.028405 .6151971 1 9 abruptio | 4031531 2.046603 .5990868 1 9 preplace | 4031531 2.048728 .597141 1 9 excebld | 4031531 2.045495 .6000957 1 9 -------------+-------------------------------------------------------- seizure | 4031531 2.051683 .5944114 1 9 precip | 4031531 2.033213 .6110345 1 9 prolong | 4031531 2.04476 .6007625 1 9 dysfunc | 4031531 2.024154 .6188232 1 9 breech | 4031531 2.014016 .6272699 1 9 -------------+-------------------------------------------------------- cephalo | 4031531 2.035616 .6089298 1 9 cord | 4031531 2.050199 .5957858 1 9 anesthe | 4031531 2.5997 1.814081 1 9 distress | 4031531 2.565419 1.834424 1 9 otherlb | 4031531 1.899699 .7056345 1 9 -------------+-------------------------------------------------------- nanemia | 4031531 2.073874 .7150909 1 9 injury | 4031531 2.659649 1.900891 1 9 alcosyn | 4031531 2.179579 1.055436 1 9 hyaline | 4031531 2.068983 .7189893 1 9 meconsyn | 4031531 2.073306 .7155464 1 9 -------------+-------------------------------------------------------- venl30 | 4031531 2.246438 1.283123 1 9 ven30m | 4031531 2.258577 1.275984 1 9 nseiz | 4031531 2.074396 .714672 1 9 otherab | 4031531 2.029979 .7482042 1 9 anen | 4031531 2.112244 .8515752 1 9 -------------+-------------------------------------------------------- spina | 4031531 2.112145 .8516462 1 9 hydro | 4031531 2.11212 .8516643 1 9 microce | 4031531 2.112286 .8515449 1 9 nervous | 4031531 2.112098 .8516802 1 9 heart | 4031531 2.111137 .8523695 1 9 -------------+-------------------------------------------------------- circul | 4031531 2.110969 .8524906 1 9 rectal | 4031531 2.112253 .8515686 1 9 tracheo | 4031531 2.112223 .8515898 1 9 omphalo | 4031531 2.112029 .8517296 1 9 gastro | 4031531 2.112004 .8517472 1 9 -------------+-------------------------------------------------------- genital | 4031531 2.111472 .8521296 1 9 renalage | 4031531 2.112196 .8516098 1 9 urogen | 4031531 2.111331 .8522307 1 9 cleftlp | 4031531 2.111549 .8520741 1 9 adactyly | 4031531 2.111532 .8520867 1 9 -------------+-------------------------------------------------------- clubfoot | 4031531 2.111765 .851919 1 9 hernia | 4031531 2.112229 .8515859 1 9 musculo | 4031531 2.110116 .8531007 1 9 downs | 4031531 2.111894 .8518267 1 9 chromo | 4031531 2.111985 .8517613 1 9 -------------+-------------------------------------------------------- othercon | 4031531 2.116473 .9128956 1 9 origm | 4031531 .9986114 .0372374 0 1 origf | 4031531 .9986114 .0372374 0 1 educm | 4031531 .9986114 .0372374 0 1 educf | 4031531 0 0 0 0 -------------+-------------------------------------------------------- geste | 4031531 .8677036 .3388128 0 1 fmapsrf | 4031531 .7770656 .4162147 0 1 delmetrf | 4031531 .9986114 .0372374 0 1 medrsk | 4031531 .9986114 .0372374 0 1 tobuse | 4031531 .8677036 .3388128 0 1 -------------+-------------------------------------------------------- alcuse | 4031531 .8677036 .3388128 0 1 wtgn | 4031531 .8677036 .3388128 0 1 obstrc | 4031531 .9986114 .0372374 0 1 clabor | 4031531 .9986114 .0372374 0 1 abnml | 4031531 .9986114 .0372374 0 1 -------------+-------------------------------------------------------- congan | 4031531 .9918825 .0897308 0 1 educsmsa | 4031531 1 0 1 1 apiflag | 4031531 .4479772 .4972863 0 1 smsares | 0 popsmas | 0 by Jean Roth , jroth@nber.org , 22 Dec 2015