Summary statistics for demo2015q1 dataset : by Jean Roth , jroth@nber.org , 6 Apr 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 317,173 1.08e+08 3.29e+07 3.50e+07 1.07e+09 caseid | 317,173 1.07e+07 378537 3503293 1.12e+07 caseversion | 317,173 1.459037 .9939519 1 56 i_f_code | 0 i_f_code_num | 317,173 71.37338 .9276813 70 72 -------------+--------------------------------------------------------- event_dt | 183,054 1.27e+07 9655246 1963 2.02e+07 event_dt_num | 183,054 19450.1 1360.03 -275745 52578 mfr_dt | 307,346 2.01e+07 9157.944 1.99e+07 2.02e+07 mfr_dt_num | 307,346 19982.64 308.8902 10405 20178 init_fda_dt | 317,173 2.01e+07 5651.629 2.00e+07 2.02e+07 -------------+--------------------------------------------------------- init_fda_d~m | 317,173 20073.65 169.54 14811 20178 fda_dt | 317,173 2.02e+07 348.285 2.01e+07 2.02e+07 fda_dt_num | 317,173 20136.68 23.95361 19725 20178 rept_cod | 0 rept_cod_num | 317,173 749012.7 54300.94 687382 806982 -------------+--------------------------------------------------------- auth_num | 0 mfr_num | 0 mfr_sndr | 0 lit_ref | 0 age | 193,778 127.7144 1318.729 -.45 36226 -------------+--------------------------------------------------------- age_cod | 0 age_grp | 0 age_grp_num | 0 sex | 0 e_sub | 0 -------------+--------------------------------------------------------- wt | 64,362 83.83792 42.71532 0 4460 wt_cod | 0 rept_dt | 316,951 2.01e+07 106511 2011 2.02e+07 rept_dt_num | 316,942 20121.68 148.9107 15310 20179 to_mfr | 0 -------------+--------------------------------------------------------- occp_cod | 0 reporter_c~y | 0 occr_country | 0 occp_cod_num | 305,608 7304.493 557.0231 6778 8072 by Jean Roth , jroth@nber.org , 6 Apr 2017