Summary statistics for natl1994 dataset : by Jean Roth , jroth@nber.org , 22 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- datayear | 3956925 1994 0 1994 1994 rectype | 3956925 1.238621 .4262406 1 2 restatus | 3956925 1.263443 .495768 1 4 recwt | 3956925 1 0 1 1 pldel | 3956925 1.026431 .2805139 1 9 -------------+-------------------------------------------------------- pldel3 | 3956925 1.010843 .1046633 1 3 birattnd | 3956925 1.179694 .6191313 1 9 regnocc | 3956925 2.650154 1.042273 1 4 divocc | 3956925 5.227211 2.576676 1 9 stsubocc | 3956925 55.83065 26.06728 11 95 -------------+-------------------------------------------------------- stnatexp | 0 statenat | 0 cntynat | 0 stoccfip | 0 cntocfip | 0 -------------+-------------------------------------------------------- cntocpop | 0 regnres | 3956925 2.646269 1.045983 0 4 divres | 3956925 5.218461 2.582559 0 9 stsubres | 3956925 55.73781 26.13265 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 | 203334 1 0 1 1 mageimp | 0 dmage | 3956925 26.75471 6.052276 10 49 mage36 | 3956925 13.75541 6.050718 1 36 -------------+-------------------------------------------------------- mage12 | 3956925 8.76805 1.6568 1 13 mage8 | 3956925 3.949353 1.245617 1 8 ormoth | 3956925 .4058389 1.26105 0 9 orracem | 3956925 5.57854 1.877042 1 9 mraceimp | 0 -------------+-------------------------------------------------------- mrace | 3956925 2.49459 8.90475 1 78 mrace3 | 3956925 1.371102 .7450465 1 3 dmeduc | 3956925 13.8328 10.67499 0 99 meduc6 | 3956925 3.370325 1.193335 1 6 dmarimp | 0 -------------+-------------------------------------------------------- dmar | 3956925 1.326078 .4687763 1 2 mplbir | 3956925 31.72696 18.21398 1 99 mplbirr | 3956925 1.189294 .3972032 1 3 dmagerpt | 3956925 95.27677 16.05173 10 99 adequacy | 3956925 1.448878 .7927932 1 4 -------------+-------------------------------------------------------- nlbnl | 3956925 1.467111 6.715739 0 99 nlbnd | 3956925 .580988 7.427087 0 99 noterm | 3956925 .989926 7.783099 0 99 dlivord | 3956925 2.601515 7.461741 1 99 livord9 | 3956925 2.075201 1.320415 1 9 -------------+-------------------------------------------------------- dtotord | 3956925 3.109765 8.297844 1 99 totord9 | 3956925 2.449688 1.591867 1 9 monpre | 3956925 4.759263 14.4793 0 99 mpre6 | 3956925 1.756457 1.131597 1 6 mpre5 | 3956925 1.341281 .799079 1 5 -------------+-------------------------------------------------------- nprevis | 3956925 14.01479 15.5765 0 99 nprev12 | 3956925 6.983095 2.065546 1 12 lmpmon | 3956925 10.22663 18.23127 1 99 lmpday | 3956925 26.45606 29.66133 1 99 lmpyr | 3956925 2310.221 1561.153 1993 9999 -------------+-------------------------------------------------------- llbmon | 0 llbyr | 0 disllb | 0 isllb10 | 0 fagerflg | 161512 1 0 1 1 -------------+-------------------------------------------------------- dfage | 3956925 40.94597 26.01612 11 99 fage11 | 3956925 5.606731 2.657608 1 11 orfath | 3956925 1.718051 3.299148 0 9 orracef | 3956925 6.04503 2.148564 1 9 frace | 3956925 17.66663 36.11336 1 99 -------------+-------------------------------------------------------- frace4 | 3956925 1.716078 1.162883 1 4 dfeduc | 3956925 27.90553 32.8104 0 99 feduc6 | 3956925 47.83153 14.42889 11 69 dfagerpt | 3956925 96.1788 13.7331 13 99 fraceimp | 7998 3 0 3 3 -------------+-------------------------------------------------------- cdobmimp | 3 1 0 1 1 birmon | 3956925 6.544875 3.417331 1 12 biryr | 3956925 1994 0 1994 1994 weekday | 3956925 4.054378 1.888693 1 7 gestestm | 163028 1 0 1 1 -------------+-------------------------------------------------------- gestimp | 364892 1 0 1 1 dgestat | 3956925 39.50141 6.218429 17 99 gestat10 | 3956925 6.582968 1.349515 1 10 gestat3 | 3956925 1.899724 .3285937 1 3 cseximp | 102 1 0 1 1 -------------+-------------------------------------------------------- csex | 3956925 1.488317 .4998636 1 2 dbirwt | 3956925 3337.594 646.1494 227 9999 birwt12 | 3956925 7.165096 1.250169 1 12 birwt4 | 3956925 2.91512 .3265143 1 4 plurimp | 641 1 0 1 1 -------------+-------------------------------------------------------- dplural | 3956925 1.026975 .1703094 1 5 omaps | 3956925 29.0544 38.33984 0 99 omapsr | 3956925 3.713728 .92985 1 5 fmaps | 3956925 29.73271 37.94952 0 99 fmapsr | 3956925 4.140276 .5810366 1 5 -------------+-------------------------------------------------------- clingest | 3956925 48.15351 21.74635 17 99 vaginal | 3956925 1.28023 .8325271 1 9 vbac | 3956925 2.03353 .6758299 1 9 primac | 3956925 1.929756 .7461296 1 9 repeac | 3956925 1.983063 .7127762 1 9 -------------+-------------------------------------------------------- forcep | 3956925 2.023395 .6837089 1 9 vacuum | 3956925 2.00513 .6973115 1 9 delmeth5 | 3956925 1.561418 1.041651 1 5 anemia | 3956925 2.073781 .8180189 1 9 cardiac | 3956925 2.089098 .8070583 1 9 -------------+-------------------------------------------------------- lung | 3956925 2.08796 .8078878 1 9 diabetes | 3956925 2.068398 .8217682 1 9 herpes | 3956925 2.570874 1.80084 1 9 hydra | 3956925 2.083472 .8111345 1 9 hemo | 3956925 2.092912 .8042605 1 9 -------------+-------------------------------------------------------- chyper | 3956925 2.086832 .8087071 1 9 phyper | 3956925 2.061774 .8263108 1 9 eclamp | 3956925 2.090142 .8062949 1 9 incervix | 3956925 2.09129 .8054535 1 9 pre4000 | 3956925 2.083335 .8112336 1 9 -------------+-------------------------------------------------------- preterm | 3956925 2.082298 .8119778 1 9 renal | 3956925 2.090987 .8056758 1 9 rh | 3956925 2.145457 .9957597 1 9 uterine | 3956925 2.5712 1.800647 1 9 othermr | 3956925 1.967988 .8828176 1 9 -------------+-------------------------------------------------------- tobacco | 3956925 3.381742 2.945577 1 9 cigar | 3956925 23.00782 40.50702 0 99 cigar6 | 3956925 1.551176 2.464704 0 6 alcohol | 3956925 3.103679 2.573561 1 9 drink | 3956925 16.2851 36.66677 0 99 -------------+-------------------------------------------------------- drink5 | 3956925 .8399626 1.856852 0 5 wtgain | 3956925 45.76457 30.56364 0 99 wtgain9 | 3956925 5.375724 2.670626 1 9 amnio | 3956925 2.030276 .6783438 1 9 monitor | 3956925 1.265729 .8285289 1 9 -------------+-------------------------------------------------------- induct | 3956925 1.916076 .7538065 1 9 stimula | 3956925 1.911213 .7564701 1 9 tocol | 3956925 2.044573 .6669209 1 9 ultras | 3956925 1.455449 .8598596 1 9 otherob | 3956925 2.011736 .6924377 1 9 -------------+-------------------------------------------------------- febrile | 3956925 2.062266 .744655 1 9 meconium | 3956925 2.020891 .7741614 1 9 rupture | 3956925 2.046851 .7560473 1 9 abruptio | 3956925 2.071836 .7373312 1 9 preplace | 3956925 2.074237 .7354631 1 9 -------------+-------------------------------------------------------- excebld | 3956925 2.072101 .7371257 1 9 seizure | 3956925 2.077155 .7331749 1 9 precip | 3956925 2.058827 .7472387 1 9 prolong | 3956925 2.068646 .7397941 1 9 dysfunc | 3956925 2.048079 .7551579 1 9 -------------+-------------------------------------------------------- breech | 3956925 2.04059 .7605366 1 9 cephalo | 3956925 2.052368 .7520264 1 9 cord | 3956925 2.075191 .7347171 1 9 anesthe | 3956925 2.57244 1.787988 1 9 distress | 3956925 2.535611 1.809569 1 9 -------------+-------------------------------------------------------- otherlb | 3956925 1.945084 .8200939 1 9 nanemia | 3956925 2.115991 .8984609 1 9 injury | 3956925 2.754316 2.02005 1 9 alcosyn | 3956925 2.222469 1.185234 1 9 hyaline | 3956925 2.110467 .9022235 1 9 -------------+-------------------------------------------------------- meconsyn | 3956925 2.114632 .8993912 1 9 venl30 | 3956925 2.291953 1.380253 1 9 ven30m | 3956925 2.301785 1.374565 1 9 nseiz | 3956925 2.116279 .8982635 1 9 otherab | 3956925 2.07517 .9251248 1 9 -------------+-------------------------------------------------------- anen | 3956925 2.376037 1.578508 1 9 spina | 3956925 2.577476 1.8661 1 9 hydro | 3956925 2.375875 1.578598 1 9 microce | 3956925 2.376058 1.578496 1 9 nervous | 3956925 2.375942 1.57856 1 9 -------------+-------------------------------------------------------- heart | 3956925 2.375066 1.579046 1 9 circul | 3956925 2.374953 1.579109 1 9 rectal | 3956925 2.376036 1.578508 1 9 tracheo | 3956925 2.375991 1.578533 1 9 omphalo | 3956925 2.375879 1.578595 1 9 -------------+-------------------------------------------------------- gastro | 3956925 2.375869 1.578601 1 9 genital | 3956925 2.375345 1.578891 1 9 renalage | 3956925 2.376012 1.578522 1 9 urogen | 3956925 2.375134 1.579009 1 9 cleftlp | 3956925 2.375309 1.578911 1 9 -------------+-------------------------------------------------------- adactyly | 3956925 2.375297 1.578918 1 9 clubfoot | 3956925 2.375583 1.57876 1 9 hernia | 3956925 2.376019 1.578518 1 9 musculo | 3956925 2.374198 1.579527 1 9 downs | 3956925 2.37571 1.578689 1 9 -------------+-------------------------------------------------------- chromo | 3956925 2.375671 1.578711 1 9 othercon | 3956925 2.370108 1.581783 1 9 origm | 3956925 .9989492 .0323993 0 1 origf | 3956925 .9989492 .0323993 0 1 educm | 3956925 .9989492 .0323993 0 1 -------------+-------------------------------------------------------- educf | 3956925 .9989492 .0323993 0 1 geste | 3956925 .8554292 .3516677 0 1 omapsrf | 3956925 .7742687 .4180631 0 1 fmapsrf | 3956925 .7742687 .4180631 0 1 delmetrf | 3956925 .9989492 .0323993 0 1 -------------+-------------------------------------------------------- medrsk | 3956925 .9989492 .0323993 0 1 tobuse | 3956925 .793805 .4045722 0 1 alcuse | 3956925 .8527657 .3543394 0 1 wtgn | 3956925 .8554211 .3516758 0 1 obstrc | 3956925 .9989492 .0323993 0 1 -------------+-------------------------------------------------------- clabor | 3956925 .9989492 .0323993 0 1 abnml | 3956925 .9989492 .0323993 0 1 congan | 3956925 .9597079 .1966436 0 1 educsmsa | 3956925 .8206193 .3836708 0 1 apiflag | 3956925 .3970429 .4892851 0 1 -------------+-------------------------------------------------------- smsares | 0 popsmas | 0 by Jean Roth , jroth@nber.org , 22 Dec 2015