Summary statistics for natl1993 dataset : by Jean Roth , jroth@nber.org , 22 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- datayear | 4004523 1993 0 1993 1993 rectype | 4004523 1.235435 .4242703 1 2 restatus | 4004523 1.260577 .4950762 1 4 recwt | 4004523 1 0 1 1 pldel | 4004523 1.027359 .2947006 1 9 -------------+-------------------------------------------------------- pldel3 | 4004523 1.010902 .1060863 1 3 birattnd | 4004523 1.176747 .6203771 1 9 regnocc | 4004523 2.649413 1.043869 1 4 divocc | 4004523 5.227586 2.582857 1 9 stsubocc | 4004523 55.82533 26.1213 11 95 -------------+-------------------------------------------------------- stnatexp | 0 statenat | 0 cntynat | 0 stoccfip | 0 cntocfip | 0 -------------+-------------------------------------------------------- cntocpop | 0 regnres | 4004523 2.645396 1.047563 0 4 divres | 4004523 5.218496 2.588726 0 9 stsubres | 4004523 55.72885 26.18679 0 95 stresexp | 0 -------------+-------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 metrores | 0 -------------+-------------------------------------------------------- stresfip | 0 cntyrfip | 0 cmsa | 0 smsarfip | 0 cntrspop | 0 -------------+-------------------------------------------------------- magerflg | 202194 1 0 1 1 mageimp | 0 dmage | 4004523 26.65975 5.972017 10 49 mage36 | 4004523 13.66046 5.970458 1 36 mage12 | 4004523 8.755177 1.630765 1 13 -------------+-------------------------------------------------------- mage8 | 4004523 3.931144 1.228164 1 8 ormoth | 4004523 .4157751 1.30994 0 9 orracem | 4004523 5.605296 1.858896 1 9 mraceimp | 0 mrace | 4004523 2.458409 8.777894 1 78 -------------+-------------------------------------------------------- mrace3 | 4004523 1.37697 .7509831 1 3 dmeduc | 4004523 13.84083 10.8981 0 99 meduc6 | 4004523 3.348199 1.188338 1 6 dmarimp | 0 dmar | 4004523 1.309828 .4624226 1 2 -------------+-------------------------------------------------------- mplbir | 4004523 31.39394 18.14705 1 99 mplbirr | 4004523 1.180737 .3909849 1 3 dmagerpt | 4004523 95.33498 15.94198 11 99 adequacy | 4004523 1.462921 .7931668 1 4 nlbnl | 4004523 1.395043 6.080911 0 99 -------------+-------------------------------------------------------- nlbnd | 4004523 .4546724 6.536999 0 99 noterm | 4004523 .873087 7.00559 0 99 dlivord | 4004523 2.490632 6.623329 1 99 livord9 | 4004523 2.078525 1.3024 1 9 dtotord | 4004523 2.986029 7.46724 1 99 -------------+-------------------------------------------------------- totord9 | 4004523 2.453775 1.573789 1 9 monpre | 4004523 4.748963 14.3154 0 99 mpre6 | 4004523 1.789311 1.144216 1 6 mpre5 | 4004523 1.358862 .809498 1 5 nprevis | 4004523 13.73402 15.11112 0 99 -------------+-------------------------------------------------------- nprev12 | 4004523 6.926211 2.086804 1 12 lmpmon | 4004523 10.28055 18.31738 1 99 lmpday | 4004523 26.83381 30.01667 1 99 lmpyr | 4004523 2312.405 1568.755 1992 9999 llbmon | 4004523 38.28917 36.1418 1 99 -------------+-------------------------------------------------------- llbyr | 4004523 4479.094 2921.711 1900 9999 disllb | 4004523 374.6261 375.0537 0 999 isllb10 | 4004523 3.546301 3.396744 0 10 fagerflg | 160277 1 0 1 1 dfage | 4004523 41.27486 26.37109 10 99 -------------+-------------------------------------------------------- fage11 | 4004523 5.630797 2.683712 1 11 orfath | 4004523 1.710635 3.29759 0 9 orracef | 4004523 6.064927 2.13424 1 9 frace | 4004523 17.68715 36.1455 1 99 frace4 | 4004523 1.718992 1.164676 1 4 -------------+-------------------------------------------------------- dfeduc | 4004523 28.18153 33.06575 0 99 feduc6 | 4004523 47.80261 14.4722 11 69 dfagerpt | 4004523 96.22833 13.62283 12 99 fraceimp | 3888 3 0 3 3 cdobmimp | 1 1 . 1 1 -------------+-------------------------------------------------------- birmon | 4004523 6.537161 3.411883 1 12 biryr | 4004523 1993 0 1993 1993 weekday | 4004523 4.043356 1.89186 1 7 gestestm | 167516 1 0 1 1 gestimp | 385353 1 0 1 1 -------------+-------------------------------------------------------- dgestat | 4004523 39.52884 6.249285 17 99 gestat10 | 4004523 6.597825 1.360174 1 10 gestat3 | 4004523 1.900099 .328397 1 3 cseximp | 129 1 0 1 1 csex | 4004523 1.487812 .4998515 1 2 -------------+-------------------------------------------------------- dbirwt | 4004523 3339.22 646.7122 227 9999 birwt12 | 4004523 7.168155 1.248916 1 12 birwt4 | 4004523 2.915853 .3255431 1 4 plurimp | 598 1 0 1 1 dplural | 4004523 1.026288 .1676713 1 5 -------------+-------------------------------------------------------- omaps | 4004523 29.2366 38.45691 0 99 omapsr | 4004523 3.715899 .9309536 1 5 fmaps | 4004523 29.91729 38.06206 0 99 fmapsr | 4004523 4.141989 .5829513 1 5 clingest | 4004523 48.48432 22.02736 17 99 -------------+-------------------------------------------------------- vaginal | 4004523 1.294334 .8718561 1 9 vbac | 4004523 2.043178 .7123122 1 9 primac | 4004523 1.934293 .7834675 1 9 repeac | 4004523 1.9884 .750931 1 9 forcep | 4004523 2.028305 .7234124 1 9 -------------+-------------------------------------------------------- vacuum | 4004523 2.017051 .7314979 1 9 delmeth5 | 4004523 1.57682 1.056374 1 5 anemia | 4004523 2.104955 .9329619 1 9 cardiac | 4004523 2.119118 .9236242 1 9 lung | 4004523 2.118615 .9239611 1 9 -------------+-------------------------------------------------------- diabetes | 4004523 2.09776 .9375882 1 9 herpes | 4004523 2.593938 1.839283 1 9 hydra | 4004523 2.329809 1.428372 1 9 hemo | 4004523 2.122669 .9212342 1 9 chyper | 4004523 2.116676 .9252564 1 9 -------------+-------------------------------------------------------- phyper | 4004523 2.094093 .9399159 1 9 eclamp | 4004523 2.120027 .9230141 1 9 incervix | 4004523 2.121067 .9223151 1 9 pre4000 | 4004523 2.113081 .9276425 1 9 preterm | 4004523 2.111846 .9284573 1 9 -------------+-------------------------------------------------------- renal | 4004523 2.121052 .9223247 1 9 rh | 4004523 2.175097 1.089383 1 9 uterine | 4004523 2.594444 1.838982 1 9 othermr | 4004523 2.005343 .9904633 1 9 tobacco | 4004523 3.64727 3.123919 1 9 -------------+-------------------------------------------------------- cigar | 4004523 26.93174 42.76405 0 99 cigar6 | 4004523 1.794604 2.587316 0 6 alcohol | 4004523 3.364275 2.796245 1 9 drink | 4004523 20.07195 39.76809 0 99 drink5 | 4004523 1.032781 2.011496 0 5 -------------+-------------------------------------------------------- wtgain | 4004523 46.93058 31.18467 0 99 wtgain9 | 4004523 5.456857 2.688545 1 9 amnio | 4004523 2.055708 .7973167 1 9 monitor | 4004523 1.307115 .9525336 1 9 induct | 4004523 1.954972 .8587927 1 9 -------------+-------------------------------------------------------- stimula | 4004523 1.950869 .8609542 1 9 tocol | 4004523 2.068551 .7882096 1 9 ultras | 4004523 1.49323 .9718431 1 9 otherob | 4004523 2.038981 .8087174 1 9 febrile | 4004523 2.091462 .8657786 1 9 -------------+-------------------------------------------------------- meconium | 4004523 2.049284 .8931333 1 9 rupture | 4004523 2.0756 .8764042 1 9 abruptio | 4004523 2.100437 .8595787 1 9 preplace | 4004523 2.102765 .8579476 1 9 excebld | 4004523 2.100851 .859289 1 9 -------------+-------------------------------------------------------- seizure | 4004523 2.105803 .8558054 1 9 precip | 4004523 2.087459 .8684996 1 9 prolong | 4004523 2.097012 .8619611 1 9 dysfunc | 4004523 2.076704 .8756781 1 9 breech | 4004523 2.068973 .880721 1 9 -------------+-------------------------------------------------------- cephalo | 4004523 2.567624 1.840805 1 9 cord | 4004523 2.103888 .8571577 1 9 anesthe | 4004523 2.594561 1.824916 1 9 distress | 4004523 2.557446 1.84667 1 9 otherlb | 4004523 1.981167 .9316 1 9 -------------+-------------------------------------------------------- nanemia | 4004523 2.133122 .9606427 1 9 injury | 4004523 2.785337 2.06259 1 9 alcosyn | 4004523 2.454158 1.624821 1 9 hyaline | 4004523 2.127763 .9641534 1 9 meconsyn | 4004523 2.131853 .9614777 1 9 -------------+-------------------------------------------------------- venl30 | 4004523 2.307268 1.413619 1 9 ven30m | 4004523 2.316822 1.408121 1 9 nseiz | 4004523 2.133518 .9603821 1 9 otherab | 4004523 2.092896 .9859777 1 9 anen | 4004523 2.456399 1.728449 1 9 -------------+-------------------------------------------------------- spina | 4004523 2.456294 1.728508 1 9 hydro | 4004523 2.456284 1.728513 1 9 microce | 4004523 2.456446 1.728424 1 9 nervous | 4004523 2.456324 1.728491 1 9 heart | 4004523 2.455454 1.728972 1 9 -------------+-------------------------------------------------------- circul | 4004523 2.455342 1.729034 1 9 rectal | 4004523 2.456441 1.728427 1 9 tracheo | 4004523 2.456374 1.728463 1 9 omphalo | 4004523 2.45629 1.72851 1 9 gastro | 4004523 2.45624 1.728538 1 9 -------------+-------------------------------------------------------- genital | 4004523 2.455782 1.728791 1 9 renalage | 4004523 2.456408 1.728445 1 9 urogen | 4004523 2.455505 1.728944 1 9 cleftlp | 4004523 2.455726 1.728822 1 9 adactyly | 4004523 2.455729 1.72882 1 9 -------------+-------------------------------------------------------- clubfoot | 4004523 2.455982 1.72868 1 9 hernia | 4004523 2.456416 1.72844 1 9 musculo | 4004523 2.454723 1.729376 1 9 downs | 4004523 2.456089 1.728621 1 9 chromo | 4004523 2.456134 1.728596 1 9 -------------+-------------------------------------------------------- othercon | 4004523 2.450356 1.731779 1 9 origm | 4004523 .9989305 .0326863 0 1 origf | 4004523 .9989305 .0326863 0 1 educm | 4004523 .9989305 .0326863 0 1 educf | 4004523 .9989305 .0326863 0 1 -------------+-------------------------------------------------------- geste | 4004523 .8527702 .3543349 0 1 omapsrf | 4004523 .7723379 .4193234 0 1 fmapsrf | 4004523 .7723379 .4193234 0 1 delmetrf | 4004523 .9989305 .0326863 0 1 medrsk | 4004523 .9989305 .0326863 0 1 -------------+-------------------------------------------------------- tobuse | 4004523 .7586062 .4279286 0 1 alcuse | 4004523 .7795698 .4145368 0 1 wtgn | 4004523 .8527647 .3543403 0 1 obstrc | 4004523 .9989305 .0326863 0 1 clabor | 4004523 .9989305 .0326863 0 1 -------------+-------------------------------------------------------- abnml | 4004523 .9989305 .0326863 0 1 congan | 4004523 .9214571 .2690241 0 1 educsmsa | 4004523 .8032138 .3975694 0 1 apiflag | 4004523 .3986739 .4896255 0 1 smsares | 0 -------------+-------------------------------------------------------- popsmas | 0 by Jean Roth , jroth@nber.org , 22 Dec 2015