Summary statistics for natl2008 dataset : by Jean Roth , jroth@nber.org , 3 May 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- revision | 0 dob_yy | 4,255,156 2008 0 2008 2008 dob_mm | 4,255,156 6.5096 3.426103 1 12 dob_wk | 4,255,156 4.046744 1.828776 1 7 oterr | 0 -------------+--------------------------------------------------------- ocntyfips | 0 ocntypop | 0 bfacil | 2,761,379 1.025398 .2730981 1 9 ubfacil | 4,255,156 1.025731 .2721046 1 9 bfacil3 | 4,255,156 1.010571 .10285 1 3 -------------+--------------------------------------------------------- mage_impflg | 456 1 0 1 1 mage_repflg | 144,191 1 0 1 1 mager | 4,255,156 27.41224 6.157836 12 50 mager14 | 4,255,156 8.963556 1.543122 1 14 mager9 | 4,255,156 4.081427 1.265977 1 9 -------------+--------------------------------------------------------- mbcntry | 0 mrterr | 0 mrcnty | 0 rcnty_pop | 0 rectype | 0 -------------+--------------------------------------------------------- restatus | 4,255,156 1.290867 .5085237 1 4 mbrace | 2,912,647 1.902378 3.205525 1 24 mrace | 1,342,509 3.235646 11.3089 1 78 mracerec | 4,255,156 1.359601 .7815489 1 4 mraceimp | 0 -------------+--------------------------------------------------------- umhisp | 4,255,156 .557807 1.356024 0 9 mracehisp | 4,255,156 5.3134 2.130831 1 9 mar | 4,255,156 1.406237 .4911298 1 2 mar_imp | 2,113 1 0 1 1 meduc | 2,761,379 3.956711 1.823518 1 9 -------------+--------------------------------------------------------- dmeduc | 1,493,777 14.00331 8.727135 0 99 meduc_rec | 1,493,777 3.617159 1.195036 1 6 fagerpt_flg | 128,806 1 0 1 1 fagecomb | 2,761,379 39.46959 24.09133 9 99 ufagecomb | 4,255,156 40.07247 24.61745 10 99 -------------+--------------------------------------------------------- fagerec11 | 4,255,156 5.579835 2.552602 1 11 fbrace | 2,912,647 20.70639 38.4949 1 99 fracerec | 4,255,156 2.798632 3.083356 1 9 ufhisp | 4,255,156 1.788097 3.231131 0 9 fracehisp | 4,255,156 5.823156 2.386013 1 9 -------------+--------------------------------------------------------- frace | 1,342,509 20.62432 38.30253 1 99 lbo_rec | 4,255,156 2.112721 1.342766 1 9 tbo_rec | 4,255,156 2.495648 1.671934 1 9 dllb_mm | 4,255,156 62.94054 42.49983 1 99 dllb_yy | 4,255,156 6723.859 3669.93 1974 9999 -------------+--------------------------------------------------------- precare | 2,761,379 8.753923 22.65457 0 99 precare_rec | 2,761,379 1.593262 1.074078 1 5 mpcb | 1,493,777 4.187027 12.74295 0 99 mpcb_rec6 | 1,493,777 1.675612 1.055252 1 6 mpcb_rec5 | 1,493,777 1.285196 .7265423 1 5 -------------+--------------------------------------------------------- uprevis | 4,255,156 14.77668 17.92021 0 99 previs_rec | 4,255,156 6.950731 2.118643 1 12 apncu | 0 wtgain | 4,255,156 34.86543 21.78969 0 99 wtgain_rec | 4,255,156 4.658758 2.454229 1 9 -------------+--------------------------------------------------------- u_apncu | 0 dfpc_imp | 204,277 1 0 1 1 cig_1 | 2,761,379 19.45792 38.43684 0 99 cig_2 | 2,761,379 19.25313 38.47994 0 99 cig_3 | 2,761,379 19.18496 38.495 0 99 -------------+--------------------------------------------------------- tobuse | 1,493,777 1.929925 .5135961 1 9 cigs | 1,493,777 1.405233 8.214854 0 99 cig_rec6 | 1,493,777 .2029526 .7280838 0 6 cig_rec | 0 rf_diab | 0 -------------+--------------------------------------------------------- rf_gest | 0 rf_phyp | 0 rf_ghyp | 0 rf_eclam | 0 rf_ppterm | 0 -------------+--------------------------------------------------------- rf_ppoutc | 0 rf_cesar | 0 rf_cesarn | 2,761,379 1.014751 9.101247 0 99 urf_diab | 4,255,156 1.999896 .6019742 1 9 urf_chyper | 4,255,156 2.033495 .5724089 1 9 -------------+--------------------------------------------------------- urf_phyper | 4,255,156 2.006213 .596672 1 9 urf_eclam | 4,255,156 2.042899 .5634977 1 9 op_cerv | 0 op_tocol | 0 op_ecvs | 0 -------------+--------------------------------------------------------- op_ecvf | 0 uop_induc | 4,255,156 1.812162 .6946898 1 9 uop_tocol | 4,255,156 2.054171 .6953905 1 9 on_ruptr | 0 on_precip | 0 -------------+--------------------------------------------------------- on_prol | 0 ld_indl | 0 ld_augm | 0 ld_nvpr | 0 ld_ster | 0 -------------+--------------------------------------------------------- ld_anti | 0 ld_chor | 0 ld_mecs | 0 ld_fint | 0 ld_anes | 0 -------------+--------------------------------------------------------- uld_meco | 4,255,156 1.994266 .5580385 1 9 uld_precip | 4,255,156 2.039713 .6763145 1 9 uld_breech | 4,255,156 2.130938 1.156516 1 9 me_attf | 0 me_attv | 0 -------------+--------------------------------------------------------- me_pres | 0 me_rout | 0 me_trial | 0 ume_vag | 1,493,777 1.370733 .7804831 1 9 ume_vbac | 1,493,777 2.037295 .5806702 1 9 -------------+--------------------------------------------------------- ume_primc | 1,493,777 1.861256 .7038164 1 9 ume_repec | 1,493,777 1.915671 .6731132 1 9 ume_forcep | 4,255,156 2.016065 .4112597 1 9 ume_vac | 4,255,156 1.991078 .4407952 1 9 rdmeth_rec | 2,761,379 1.814799 1.20177 1 9 -------------+--------------------------------------------------------- udmeth_rec | 1,493,777 1.828772 1.295029 1 9 dmeth_rec | 4,255,156 1.348776 .6423311 1 9 attend | 4,255,156 1.246201 .6872942 1 9 apgar5 | 4,255,156 9.42999 7.433336 0 99 apgar5r | 4,255,156 3.850241 .4446536 1 5 -------------+--------------------------------------------------------- dplural | 4,255,156 1.035687 .1944119 1 5 imp_plur | 161 1 0 1 1 sex | 0 imp_sex | 77 1 0 1 1 dlmp_mm | 4,255,156 11.87017 21.66137 1 99 -------------+--------------------------------------------------------- dlmp_dd | 4,255,156 23.6869 26.60971 1 99 dlmp_yy | 4,255,156 2447.781 1823.891 2006 9999 estgest | 4,255,156 38.63403 4.105397 0 99 combgest | 4,255,156 38.65281 3.386325 17 99 gestrec10 | 4,255,156 6.348455 1.150007 1 10 -------------+--------------------------------------------------------- gestrec3 | 4,255,156 1.878307 .3310877 1 3 obgest_flg | 265,884 1 0 1 1 gest_imp | 185,813 1 0 1 1 dbwt | 4,255,156 3269.096 629.5805 227 9999 bwtr12 | 4,255,156 7.030255 1.223972 1 12 -------------+--------------------------------------------------------- bwtr4 | 4,255,156 2.904784 .3424613 1 4 ab_aven1 | 0 ab_aven6 | 0 ab_nicu | 0 ab_surf | 0 -------------+--------------------------------------------------------- ab_anti | 0 ab_seiz | 0 ab_binj | 0 ca_anen | 0 ca_mnsb | 0 -------------+--------------------------------------------------------- ca_cchd | 0 ca_cdh | 0 ca_omph | 0 ca_gast | 0 ca_limb | 0 -------------+--------------------------------------------------------- ca_cleft | 0 ca_clpal | 0 ca_downs | 0 ca_disor | 0 ca_hypo | 0 -------------+--------------------------------------------------------- uca_anen | 4,255,156 2.076534 .7286204 1 9 uca_spina | 4,255,156 2.07649 .7286559 1 9 uca_ompha | 4,255,156 2.076285 .7288176 1 9 uca_cleftlp | 4,255,156 2.075932 .7290966 1 9 uca_hernia | 4,255,156 2.076543 .7286137 1 9 -------------+--------------------------------------------------------- uca_downs | 4,255,156 2.076187 .7288955 1 9 f_morigin | 4,255,156 .9982539 .0417501 0 1 f_forigin | 4,255,156 .9982539 .0417501 0 1 f_meduc | 4,255,156 .6458788 .4782462 0 1 f_clinest | 4,255,156 .9982541 .0417473 0 1 -------------+--------------------------------------------------------- f_apgar5 | 4,255,156 .9982541 .0417473 0 1 f_tobaco | 4,255,156 .5285682 .4991833 0 1 f_rf_pdiab | 4,255,156 .6458788 .4782462 0 1 f_rf_gdiab | 4,255,156 .6458788 .4782462 0 1 f_rf_phyper | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_rf_ghyper | 4,255,156 .6458788 .4782462 0 1 f_rf_eclamp | 4,255,156 .5002049 .5 0 1 f_rf_ppb | 4,255,156 .6458788 .4782462 0 1 f_rf_ppo | 4,255,156 .6458788 .4782462 0 1 f_rf_cesar | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_rf_ncesar | 4,255,156 .6458788 .4782462 0 1 f_ob_cervic | 4,255,156 .6458788 .4782462 0 1 f_ob_toco | 4,255,156 .6458788 .4782462 0 1 f_ob_succ | 4,255,156 .6458788 .4782462 0 1 f_ob_fail | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_on_rupture | 4,255,156 .6458788 .4782462 0 1 f_on_precip | 4,255,156 .6458788 .4782462 0 1 f_on_prolong | 4,255,156 .6458788 .4782462 0 1 f_ld_induct | 4,255,156 .6458788 .4782462 0 1 f_ld_augment | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_ld_nvrtx | 4,255,156 .6458788 .4782462 0 1 f_ld_stero~s | 4,255,156 .6458788 .4782462 0 1 f_ld_antibio | 4,255,156 .6458788 .4782462 0 1 f_ld_chorio | 4,255,156 .6458788 .4782462 0 1 f_ld_mecon | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_ld_fintol | 4,255,156 .6458788 .4782462 0 1 f_ld_anesth | 4,255,156 .6458788 .4782462 0 1 f_md_attfor | 4,255,156 .6458788 .4782462 0 1 f_md_attvac | 4,255,156 .6458788 .4782462 0 1 f_md_present | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_md_route | 4,255,156 .6458788 .4782462 0 1 f_md_trial | 4,255,156 .6458788 .4782462 0 1 f_ab_vent | 4,255,156 .6458788 .4782462 0 1 f_ab_vent6 | 4,255,156 .6458788 .4782462 0 1 f_ab_nicu | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_ab_surfac | 4,255,156 .6458788 .4782462 0 1 f_ab_antibio | 4,255,156 .6458788 .4782462 0 1 f_ab_seiz | 4,255,156 .6458788 .4782462 0 1 f_ab_inj | 4,255,156 .6458788 .4782462 0 1 f_ca_anen | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_ca_menin | 4,255,156 .6458788 .4782462 0 1 f_ca_heart | 4,255,156 .6458788 .4782462 0 1 f_ca_hernia | 4,255,156 .6458788 .4782462 0 1 f_ca_ompha | 4,255,156 .6458788 .4782462 0 1 f_ca_gastro | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_ca_limb | 4,255,156 .6458788 .4782462 0 1 f_ca_cleftlp | 4,255,156 .6458788 .4782462 0 1 f_ca_cleft | 4,255,156 .6458788 .4782462 0 1 f_ca_downs | 4,255,156 .6458788 .4782462 0 1 f_ca_chrom | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_ca_hypos | 4,255,156 .6458788 .4782462 0 1 f_med | 4,255,156 .3523753 .4777102 0 1 f_wtgain | 4,255,156 .9982539 .0417501 0 1 f_tobac | 4,255,156 .3523753 .4777102 0 1 f_mpcb | 4,255,156 .6458788 .4782462 0 1 -------------+--------------------------------------------------------- f_mpcb_u | 4,255,156 .3523753 .4777102 0 1 f_urf_diab~s | 4,255,156 .9982541 .0417473 0 1 f_urf_chyper | 4,255,156 .9982541 .0417473 0 1 f_urf_phyper | 4,255,156 .9982541 .0417473 0 1 f_urf_eclamp | 4,255,156 .8525803 .3545239 0 1 -------------+--------------------------------------------------------- f_uob_induct | 4,255,156 .9982541 .0417473 0 1 f_uob_tocol | 4,255,156 .9982541 .0417473 0 1 f_uld_meco~m | 4,255,156 .9982541 .0417473 0 1 f_uld_precip | 4,255,156 .9982541 .0417473 0 1 f_uld_breech | 4,255,156 .9982541 .0417473 0 1 -------------+--------------------------------------------------------- f_u_vag | 4,255,156 .3523753 .4777102 0 1 f_u_vbac | 4,255,156 .3523753 .4777102 0 1 f_u_primc | 4,255,156 .3523753 .4777102 0 1 f_u_repec | 4,255,156 .3523753 .4777102 0 1 f_u_forcep | 4,255,156 .9982541 .0417473 0 1 -------------+--------------------------------------------------------- f_u_vac | 4,255,156 .9982541 .0417473 0 1 f_uca_anen | 4,255,156 .9982541 .0417473 0 1 f_uca_spina | 4,255,156 .9982541 .0417473 0 1 f_uca_omph~o | 4,255,156 .9982541 .0417473 0 1 f_uca_clef~p | 4,255,156 .9982541 .0417473 0 1 -------------+--------------------------------------------------------- f_uca_hernia | 4,255,156 .9982541 .0417473 0 1 f_uca_downs | 4,255,156 .9982541 .0417473 0 1 by Jean Roth , jroth@nber.org , 3 May 2016