Summary statistics for natl1995 dataset : by Jean Roth , jroth@nber.org , 22 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- datayear | 3903012 1995 0 1995 1995 rectype | 3903012 1.24076 .4275449 1 2 restatus | 3903012 1.265276 .4956718 1 4 recwt | 3903012 1 0 1 1 pldel | 3903012 1.026419 .2867351 1 9 -------------+-------------------------------------------------------- pldel3 | 3903012 1.010538 .1039108 1 3 birattnd | 3903012 1.196491 .6774696 1 9 regnocc | 3903012 2.65547 1.039167 1 4 divocc | 3903012 5.23815 2.569116 1 9 stsubocc | 3903012 55.95134 25.99473 11 95 -------------+-------------------------------------------------------- stnatexp | 0 statenat | 0 cntynat | 0 stoccfip | 0 cntocfip | 0 -------------+-------------------------------------------------------- cntocpop | 0 regnres | 3903012 2.652272 1.042216 0 4 divres | 3903012 5.23083 2.574061 0 9 stsubres | 3903012 55.87364 26.0493 0 95 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 | 200377 1 0 1 1 mageimp | 0 dmage | 3903012 26.85349 6.111105 10 49 mage36 | 3903012 13.85417 6.109611 1 36 -------------+-------------------------------------------------------- mage12 | 3903012 8.788526 1.66701 1 13 mage8 | 3903012 3.970104 1.256795 1 8 ormoth | 3903012 .4542553 1.388346 0 9 orracem | 3903012 5.562046 1.917867 1 9 mraceimp | 0 -------------+-------------------------------------------------------- mrace | 3903012 2.536354 9.071703 1 78 mrace3 | 3903012 1.359766 .7344758 1 3 dmeduc | 3903012 13.96625 10.92342 0 99 meduc6 | 3903012 3.399482 1.200674 1 6 dmarimp | 0 -------------+-------------------------------------------------------- dmar | 3903012 1.32143 .4670255 1 2 mplbir | 3903012 31.65747 18.3299 1 99 mplbirr | 3903012 1.190179 .3986872 1 3 dmagerpt | 3903012 95.28605 16.02263 11 99 adequacy | 3903012 1.445089 .8032781 1 4 -------------+-------------------------------------------------------- nlbnl | 3903012 1.544214 7.312094 0 99 nlbnd | 3903012 .714406 8.261522 0 99 noterm | 3903012 1.17038 8.838232 0 99 dlivord | 3903012 2.725578 8.276217 1 99 livord9 | 3903012 2.074932 1.341274 1 9 -------------+-------------------------------------------------------- dtotord | 3903012 3.316337 9.459686 1 99 totord9 | 3903012 2.453727 1.6182 1 9 monpre | 3903012 4.809605 14.73719 0 99 mpre6 | 3903012 1.730957 1.128965 1 6 mpre5 | 3903012 1.331329 .7979933 1 5 -------------+-------------------------------------------------------- nprevis | 3903012 14.43089 16.33703 0 99 nprev12 | 3903012 7.054152 2.068718 1 12 lmpmon | 3903012 10.629 19.08427 1 99 lmpday | 3903012 26.55868 29.81953 1 99 lmpyr | 3903012 2393.582 1742.762 1994 9999 -------------+-------------------------------------------------------- flgbwimp | 0 bwimp | 4079 5634.203 3786.371 227 9999 fagerflg | 163578 1 0 1 1 dfage | 3903012 40.45828 25.50419 10 99 fage11 | 3903012 5.568933 2.617094 1 11 -------------+-------------------------------------------------------- orfath | 3903012 1.706911 3.284879 0 9 orracef | 3903012 6.021853 2.170665 1 9 frace | 3903012 17.12311 35.5977 1 99 frace4 | 3903012 1.698283 1.149965 1 4 dfagerpt | 3903012 96.10583 13.90039 12 99 -------------+-------------------------------------------------------- fraceimp | 10604 3 0 3 3 cdobmimp | 3 1 0 1 1 birmon | 3903012 6.54499 3.403712 1 12 biryr | 3903012 1995 0 1995 1995 weekday | 3903012 4.052508 1.885598 1 7 -------------+-------------------------------------------------------- gestestm | 197484 1 0 1 1 gestimp | 349378 1 0 1 1 dgestat | 3903012 39.50768 6.345306 17 99 gestat10 | 3903012 6.568436 1.339821 1 10 gestat3 | 3903012 1.900523 .3290674 1 3 -------------+-------------------------------------------------------- cseximp | 54 1 0 1 1 csex | 3903012 1.488052 .4998573 1 2 dbirwt | 3903012 3334.199 641.8787 227 9999 birwt12 | 3903012 7.159355 1.248656 1 12 birwt4 | 3903012 2.914503 .3273465 1 4 -------------+-------------------------------------------------------- plurimp | 398 1 0 1 1 dplural | 3903012 1.027476 .1726191 1 5 fmaps | 3903012 29.64065 37.89773 0 99 fmapsr | 3903012 4.139366 .5800216 1 5 clingest | 3903012 47.94969 21.59163 17 99 -------------+-------------------------------------------------------- vaginal | 3903012 1.266637 .7838002 1 9 vbac | 3903012 2.023527 .6282673 1 9 primac | 3903012 1.921586 .7007612 1 9 repeac | 3903012 1.976306 .6647809 1 9 forcep | 3903012 2.017818 .6329812 1 9 -------------+-------------------------------------------------------- vacuum | 3903012 1.993779 .6519069 1 9 delmeth5 | 3903012 1.548399 1.027227 1 5 anemia | 3903012 2.061641 .767778 1 9 cardiac | 3903012 2.077136 .7561997 1 9 lung | 3903012 2.075052 .7577856 1 9 -------------+-------------------------------------------------------- diabetes | 3903012 2.056993 .7711571 1 9 herpes | 3903012 2.569529 1.796691 1 9 hydra | 3903012 2.070632 .7611196 1 9 hemo | 3903012 2.081166 .7531074 1 9 chyper | 3903012 2.07521 .7576656 1 9 -------------+-------------------------------------------------------- phyper | 3903012 2.048143 .7774722 1 9 eclamp | 3903012 2.078225 .7553676 1 9 incervix | 3903012 2.079536 .7543622 1 9 pre4000 | 3903012 2.07152 .7604528 1 9 preterm | 3903012 2.070628 .7611231 1 9 -------------+-------------------------------------------------------- renal | 3903012 2.079312 .7545344 1 9 rh | 3903012 2.133687 .9542601 1 9 uterine | 3903012 2.570315 1.796222 1 9 othermr | 3903012 1.948679 .8388155 1 9 tobacco | 3903012 3.367361 2.929123 1 9 -------------+-------------------------------------------------------- cigar | 3903012 22.6152 40.32315 0 99 cigar6 | 3903012 1.520335 2.453511 0 6 alcohol | 3903012 3.091837 2.560297 1 9 drink | 3903012 16.04447 36.45109 0 99 drink5 | 3903012 .8259767 1.845417 0 5 -------------+-------------------------------------------------------- wtgain | 3903012 45.5664 30.47447 0 99 wtgain9 | 3903012 5.362627 2.673489 1 9 amnio | 3903012 2.026576 .662513 1 9 monitor | 3903012 1.25263 .8093295 1 9 induct | 3903012 1.899711 .7459475 1 9 -------------+-------------------------------------------------------- stimula | 3903012 1.898703 .7464864 1 9 tocol | 3903012 2.039574 .6519709 1 9 ultras | 3903012 1.451968 .8449256 1 9 otherob | 3903012 2.003697 .6800705 1 9 febrile | 3903012 2.052846 .7025043 1 9 -------------+-------------------------------------------------------- meconium | 3903012 2.012112 .7327299 1 9 rupture | 3903012 2.038373 .7136566 1 9 abruptio | 3903012 2.062965 .6944222 1 9 preplace | 3903012 2.065326 .6925008 1 9 excebld | 3903012 2.062906 .6944699 1 9 -------------+-------------------------------------------------------- seizure | 3903012 2.068213 .6901339 1 9 precip | 3903012 2.049716 .7049568 1 9 prolong | 3903012 2.059957 .6968497 1 9 dysfunc | 3903012 2.040976 .7116859 1 9 breech | 3903012 2.031639 .7186873 1 9 -------------+-------------------------------------------------------- cephalo | 3903012 2.043482 .7097741 1 9 cord | 3903012 2.066378 .6916409 1 9 anesthe | 3903012 2.572569 1.78558 1 9 distress | 3903012 2.535516 1.807321 1 9 otherlb | 3903012 1.933976 .7815473 1 9 -------------+-------------------------------------------------------- nanemia | 3903012 2.086517 .77895 1 9 injury | 3903012 2.755969 2.020971 1 9 alcosyn | 3903012 2.193344 1.101301 1 9 hyaline | 3903012 2.081002 .7830721 1 9 meconsyn | 3903012 2.085215 .7799289 1 9 -------------+-------------------------------------------------------- venl30 | 3903012 2.276183 1.344438 1 9 ven30m | 3903012 2.286508 1.338423 1 9 nseiz | 3903012 2.086683 .778825 1 9 otherab | 3903012 2.041431 .8109363 1 9 anen | 3903012 2.47989 1.737384 1 9 -------------+-------------------------------------------------------- spina | 3903012 2.479736 1.737471 1 9 hydro | 3903012 2.479727 1.737476 1 9 microce | 3903012 2.47992 1.737367 1 9 nervous | 3903012 2.479775 1.737449 1 9 heart | 3903012 2.478848 1.737972 1 9 -------------+-------------------------------------------------------- circul | 3903012 2.47875 1.738027 1 9 rectal | 3903012 2.479907 1.737375 1 9 tracheo | 3903012 2.47985 1.737407 1 9 omphalo | 3903012 2.479763 1.737456 1 9 gastro | 3903012 2.479708 1.737487 1 9 -------------+-------------------------------------------------------- genital | 3903012 2.479282 1.737727 1 9 renalage | 3903012 2.479876 1.737392 1 9 urogen | 3903012 2.478873 1.737958 1 9 cleftlp | 3903012 2.479197 1.737775 1 9 adactyly | 3903012 2.479232 1.737755 1 9 -------------+-------------------------------------------------------- clubfoot | 3903012 2.479445 1.737635 1 9 hernia | 3903012 2.479881 1.737389 1 9 musculo | 3903012 2.478213 1.738329 1 9 downs | 3903012 2.479577 1.737561 1 9 chromo | 3903012 2.479288 1.737724 1 9 -------------+-------------------------------------------------------- othercon | 3903012 2.475011 1.740127 1 9 origm | 3903012 .999123 .0296015 0 1 origf | 3903012 .999123 .0296015 0 1 educm | 3903012 .999123 .0296015 0 1 educf | 3903012 0 0 0 0 -------------+-------------------------------------------------------- geste | 3903012 .8576876 .3493703 0 1 fmapsrf | 3903012 .7749889 .4175897 0 1 delmetrf | 3903012 .999123 .0296015 0 1 medrsk | 3903012 .999123 .0296015 0 1 tobuse | 3903012 .7965433 .4025694 0 1 -------------+-------------------------------------------------------- alcuse | 3903012 .8549984 .3521025 0 1 wtgn | 3903012 .8576822 .3493758 0 1 obstrc | 3903012 .999123 .0296015 0 1 clabor | 3903012 .999123 .0296015 0 1 abnml | 3903012 .999123 .0296015 0 1 -------------+-------------------------------------------------------- congan | 3903012 .9413807 .2349109 0 1 educsmsa | 3903012 .8199757 .3842077 0 1 apiflag | 3903012 .3952409 .4889024 0 1 smsares | 0 popsmas | 0 by Jean Roth , jroth@nber.org , 22 Dec 2015