Summary statistics for natl1989 dataset : by Jean Roth , jroth@nber.org , 3 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- datayear | 4,045,693 1989 0 1989 1989 rectype | 4,045,693 1.234135 .4234571 1 2 restatus | 4,045,693 1.260923 .4987581 1 4 recwt | 4,045,693 1 0 1 1 pldel | 4,045,693 1.034197 .347015 1 9 -------------+--------------------------------------------------------- pldel3 | 4,045,693 1.013306 .1194486 1 3 birattnd | 4,045,693 1.152658 .6625376 1 9 regnocc | 4,045,693 2.621196 1.045838 1 4 divocc | 4,045,693 5.15505 2.580853 1 9 stsubocc | 4,045,693 55.0864 26.10766 11 95 -------------+--------------------------------------------------------- stnatexp | 0 statenat | 0 cntynat | 0 stoccfip | 0 cntocfip | 0 -------------+--------------------------------------------------------- cntocpop | 4,045,693 2.92251 3.295196 0 9 regnres | 4,045,693 2.617088 1.04957 0 4 divres | 4,045,693 5.145444 2.586557 0 9 stsubres | 0 stresexp | 0 -------------+--------------------------------------------------------- stateres | 0 cntyres | 0 cityres | 0 citrspop | 0 metrores | 0 -------------+--------------------------------------------------------- stresfip | 0 cntyrfip | 0 smsarfip | 0 cntrspop | 0 magerflg | 579,597 1 0 1 1 -------------+--------------------------------------------------------- mageimp | 0 dmage | 4,045,693 26.31856 5.684352 10 49 mage36 | 4,045,693 13.31933 5.682571 1 36 mage12 | 4,045,693 8.6959 1.561212 1 13 mage8 | 4,045,693 3.862758 1.174385 1 8 -------------+--------------------------------------------------------- ormoth | 4,045,693 .7308219 2.112619 0 9 orracem | 4,045,693 5.85877 1.769455 1 9 mraceimp | 0 mrace | 4,045,693 1.386128 1.151114 1 9 mrace3 | 4,045,693 1.376218 .7533147 1 3 -------------+--------------------------------------------------------- dmeduc | 4,045,693 20.1654 24.80598 0 99 meduc6 | 4,045,693 3.504131 1.318938 1 6 dmarimp | 0 dmar | 4,045,693 1.270571 .4442548 1 2 mplbir | 4,045,693 30.49746 17.59031 1 99 -------------+--------------------------------------------------------- mplbirr | 4,045,693 1.148791 .3614319 1 3 dmagerpt | 4,045,693 88.57088 25.58771 10 99 adequacy | 4,045,693 1.527712 .8300654 1 4 nlbnl | 4,045,693 1.475973 6.841038 0 99 nlbnd | 4,045,693 .5589193 7.259502 0 99 -------------+--------------------------------------------------------- noterm | 4,045,693 1.06139 8.411978 0 99 dlivord | 4,045,693 2.571527 7.301753 1 99 livord9 | 4,045,693 2.068047 1.300475 1 9 dtotord | 4,045,693 3.14444 8.70391 1 99 totord9 | 4,045,693 2.417974 1.561379 1 9 -------------+--------------------------------------------------------- monpre | 4,045,693 4.767921 13.97201 0 99 mpre6 | 4,045,693 1.876537 1.180986 1 6 mpre5 | 4,045,693 1.409971 .8417006 1 5 nprevis | 4,045,693 13.35428 15.09117 0 99 nprev12 | 4,045,693 6.756197 2.181848 1 12 -------------+--------------------------------------------------------- lmpmon | 4,045,693 10.02382 17.68375 1 99 lmpday | 4,045,693 28.92736 31.9741 1 99 lmpyr | 4,045,693 2293.916 1534.689 1988 9999 llbmon | 4,045,693 39.79213 36.63639 1 99 llbyr | 4,045,693 4619.111 2986.731 1900 9999 -------------+--------------------------------------------------------- disllb | 4,045,693 390.1585 380.038 0 999 isllb10 | 4,045,693 3.598682 3.472699 0 10 fagerflg | 471,505 1 0 1 1 dfage | 4,045,693 40.90704 26.32801 10 99 fage11 | 4,045,693 5.56992 2.674865 1 11 -------------+--------------------------------------------------------- orfath | 4,045,693 1.889033 3.47179 0 9 orracef | 4,045,693 6.246607 2.002347 1 9 frace | 4,045,693 15.8173 34.72093 1 99 frace4 | 4,045,693 1.687666 1.145326 1 4 dfeduc | 4,045,693 32.98337 36.59433 0 99 -------------+--------------------------------------------------------- feduc6 | 4,045,693 48.55771 14.69129 11 69 dfagerpt | 4,045,693 90.95481 22.3052 10 99 cdobmimp | 3 1 0 1 1 birmon | 4,045,693 6.589957 3.40516 1 12 biryr | 4,045,693 1989 0 1989 1989 -------------+--------------------------------------------------------- weekday | 4,045,693 4.029178 1.914723 1 7 gestestm | 147,494 1 0 1 1 gestimp | 497,958 1 0 1 1 dgestat | 4,045,693 40.01184 7.613389 17 99 gestat10 | 4,045,693 6.716631 1.423548 1 10 -------------+--------------------------------------------------------- gestat3 | 4,045,693 1.910042 .3324718 1 3 cseximp | 141 1 0 1 1 csex | 4,045,693 1.487855 .4998525 1 2 crace | 4,045,693 0 0 0 0 crace3 | 4,045,693 1.400113 .7686115 1 3 -------------+--------------------------------------------------------- dbirwt | 4,045,693 3350.374 650.909 227 9999 birwt12 | 4,045,693 7.190047 1.251232 1 12 birwt4 | 4,045,693 2.918139 .3215231 1 4 plurimp | 684 1 0 1 1 dplural | 4,045,693 1.02376 .1578453 1 5 -------------+--------------------------------------------------------- omaps | 4,045,693 29.45741 38.62231 0 99 omapsr | 4,045,693 3.709164 .9391849 1 5 fmaps | 4,045,693 30.17505 38.21102 0 99 fmapsr | 4,045,693 4.136203 .5972701 1 5 clingest | 4,045,693 52.35077 24.8951 17 99 -------------+--------------------------------------------------------- vaginal | 4,045,693 2.013861 2.375829 1 9 vbac | 4,045,693 2.689727 2.119709 1 9 primac | 4,045,693 2.577616 2.178844 1 9 repeac | 4,045,693 2.631552 2.151327 1 9 forcep | 4,045,693 2.657837 2.137295 1 9 -------------+--------------------------------------------------------- vacuum | 4,045,693 2.676234 2.127226 1 9 delmeth5 | 4,045,693 1.908536 1.417651 1 5 anemia | 4,045,693 2.639996 2.051499 1 9 cardiac | 4,045,693 2.654064 2.043619 1 9 lung | 4,045,693 2.654565 2.043335 1 9 -------------+--------------------------------------------------------- diabetes | 4,045,693 2.638182 2.052506 1 9 herpes | 4,045,693 3.160707 2.477702 1 9 hydra | 4,045,693 2.878544 2.276482 1 9 hemo | 4,045,693 2.883071 2.273734 1 9 chyper | 4,045,693 2.650648 2.045544 1 9 -------------+--------------------------------------------------------- phyper | 4,045,693 2.631155 2.056387 1 9 eclamp | 4,045,693 2.653305 2.044047 1 9 incervix | 4,045,693 2.881232 2.274853 1 9 pre4000 | 4,045,693 2.873523 2.279515 1 9 preterm | 4,045,693 2.870963 2.281056 1 9 -------------+--------------------------------------------------------- renal | 4,045,693 2.654825 2.043189 1 9 rh | 4,045,693 2.711169 2.111421 1 9 uterine | 4,045,693 2.933365 2.295246 1 9 othermr | 4,045,693 2.56772 2.090028 1 9 tobacco | 4,045,693 4.157418 3.390526 1 9 -------------+--------------------------------------------------------- cigar | 4,045,693 35.01768 45.96729 0 99 cigar6 | 4,045,693 2.302613 2.753076 0 6 alcohol | 4,045,693 4.150608 3.264518 1 9 drink | 4,045,693 31.71581 46.14776 0 99 drink5 | 4,045,693 1.633414 2.325531 0 5 -------------+--------------------------------------------------------- wtgain | 4,045,693 52.13211 33.55867 0 99 wtgain9 | 4,045,693 5.772057 2.761235 1 9 amnio | 4,045,693 2.584733 1.99663 1 9 monitor | 4,045,693 1.989988 2.218803 1 9 induct | 4,045,693 2.531699 2.024543 1 9 -------------+--------------------------------------------------------- stimula | 4,045,693 2.514615 2.033159 1 9 tocol | 4,045,693 2.599544 1.988512 1 9 ultras | 4,045,693 2.476714 2.476474 1 9 otherob | 4,045,693 2.577632 2.000471 1 9 febrile | 4,045,693 2.637906 2.034599 1 9 -------------+--------------------------------------------------------- meconium | 4,045,693 2.617616 2.0901 1 9 rupture | 4,045,693 2.615593 2.046918 1 9 abruptio | 4,045,693 2.64201 2.032298 1 9 preplace | 4,045,693 2.644751 2.030756 1 9 excebld | 4,045,693 2.64254 2.032 1 9 -------------+--------------------------------------------------------- seizure | 4,045,693 2.647582 2.029157 1 9 precip | 4,045,693 2.630827 2.038542 1 9 prolong | 4,045,693 2.637178 2.035006 1 9 dysfunc | 4,045,693 2.621154 2.043877 1 9 breech | 4,045,693 2.612648 2.048521 1 9 -------------+--------------------------------------------------------- cephalo | 4,045,693 3.133044 2.492864 1 9 cord | 4,045,693 2.799981 2.197135 1 9 anesthe | 4,045,693 2.936485 2.286128 1 9 distress | 4,045,693 2.924714 2.333027 1 9 otherlb | 4,045,693 2.553458 2.079579 1 9 -------------+--------------------------------------------------------- nanemia | 4,045,693 2.688417 2.087858 1 9 injury | 4,045,693 3.112811 2.443837 1 9 alcosyn | 4,045,693 3.02804 2.40803 1 9 hyaline | 4,045,693 2.684885 2.089864 1 9 meconsyn | 4,045,693 2.916483 2.315665 1 9 -------------+--------------------------------------------------------- venl30 | 4,045,693 3.106201 2.482608 1 9 ven30m | 4,045,693 3.109949 2.480179 1 9 nseiz | 4,045,693 2.689223 2.087399 1 9 otherab | 4,045,693 2.656937 2.105465 1 9 anen | 4,045,693 3.229455 2.663824 1 9 -------------+--------------------------------------------------------- spina | 4,045,693 3.229369 2.663879 1 9 hydro | 4,045,693 3.229369 2.663879 1 9 microce | 4,045,693 3.229521 2.66378 1 9 nervous | 4,045,693 3.229352 2.66389 1 9 heart | 4,045,693 3.228475 2.664459 1 9 -------------+--------------------------------------------------------- circul | 4,045,693 3.228308 2.664568 1 9 rectal | 4,045,693 3.229508 2.663789 1 9 tracheo | 4,045,693 3.2295 2.663794 1 9 omphalo | 4,045,693 3.229386 2.663868 1 9 gastro | 4,045,693 3.22926 2.66395 1 9 -------------+--------------------------------------------------------- genital | 4,045,693 3.228886 2.664193 1 9 renalage | 4,045,693 3.229519 2.663782 1 9 urogen | 4,045,693 3.228362 2.664532 1 9 cleftlp | 4,045,693 3.228763 2.664273 1 9 adactyly | 4,045,693 3.228738 2.664289 1 9 -------------+--------------------------------------------------------- clubfoot | 4,045,693 3.229043 2.664091 1 9 hernia | 4,045,693 3.229497 2.663796 1 9 musculo | 4,045,693 3.227518 2.66508 1 9 downs | 4,045,693 3.229138 2.664029 1 9 chromo | 4,045,693 3.229156 2.664017 1 9 -------------+--------------------------------------------------------- othercon | 4,045,693 3.223057 2.667966 1 9 origm | 4,045,693 .9647326 .1844549 0 1 origf | 4,045,693 .9647326 .1844549 0 1 educm | 4,045,693 .9409973 .2356299 0 1 educf | 4,045,693 .9409973 .2356299 0 1 -------------+--------------------------------------------------------- geste | 4,045,693 .8222604 .3822935 0 1 omapsrf | 4,045,693 .7701813 .4207162 0 1 fmapsrf | 4,045,693 .7701813 .4207162 0 1 delmetrf | 4,045,693 .9389576 .2394082 0 1 medrsk | 4,045,693 .963149 .188396 0 1 -------------+--------------------------------------------------------- tobuse | 4,045,693 .7268493 .4455777 0 1 alcuse | 4,045,693 .7474808 .4344575 0 1 wtgn | 4,045,693 .8222604 .3822935 0 1 obstrc | 4,045,693 .963149 .188396 0 1 clabor | 4,045,693 .963149 .188396 0 1 -------------+--------------------------------------------------------- abnml | 4,045,693 .963149 .188396 0 1 congan | 4,045,693 .8843486 .3198065 0 1 educsmsa | 4,045,693 .6975094 .4593366 0 1 smsares | 0 popsmas | 0 by Jean Roth , jroth@nber.org , 3 Jan 2016