Summary statistics for demo2011q2 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 194310 7489258 57502.85 7215577 7692852 caseid | 194310 7870604 241343.5 3067006 8171046 i_f_code | 0 i_f_code_num | 194310 71.37067 .9287689 70 72 foll_seq | 0 -------------+-------------------------------------------------------- image | 0 event_dt | 119790 2.01e+07 28316.3 1.90e+07 2.01e+07 event_dt_num | 119790 18193.09 1029.231 -21914 18822 mfr_dt | 187333 2.01e+07 9851.907 2.00e+07 2.01e+07 mfr_dt_num | 187333 18664.79 347.8576 13272 18840 -------------+-------------------------------------------------------- fda_dt | 194310 2.01e+07 81.61209 2.01e+07 2.01e+07 fda_dt_num | 194310 18764.49 26.11419 18631 18808 rept_cod | 0 rept_cod_num | 194310 729572.2 49241.37 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 132326 126.7223 1303.496 -4 35156 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 54553 81.9088 48.16131 0 5865 wt_cod | 0 rept_dt | 193967 2.01e+07 1509.351 1.95e+07 2.01e+07 rept_dt_num | 193967 18762.83 60.78013 -2807 18808 occp_cod | 0 -------------+-------------------------------------------------------- to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 185096 7413.656 539.7334 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015