Summary statistics for demo2012q2 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 225402 8370460 70745.12 8017085 8618487 caseid | 225402 8489362 265659.3 3022499 8743454 i_f_code | 0 i_f_code_num | 225402 71.40245 .915446 70 72 foll_seq | 3881 1.772997 1.995421 1 90 -------------+-------------------------------------------------------- image | 0 event_dt | 129854 2.01e+07 38671.53 1.01e+07 2.01e+07 event_dt_num | 129854 18650.14 1412.116 -346279 19177 mfr_dt | 219391 2.01e+07 6412.836 1.98e+07 2.01e+07 mfr_dt_num | 219391 19063.23 222.747 8155 19357 -------------+-------------------------------------------------------- fda_dt | 225402 2.01e+07 85.69406 2.01e+07 2.01e+07 fda_dt_num | 225402 19128.22 27.52434 18994 19174 rept_cod | 0 rept_cod_num | 225402 734534.9 51255.49 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 151507 112.1984 1181.971 -951 36733 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 59446 81.08735 92.9803 0 18182 wt_cod | 0 rept_dt | 225055 2.01e+07 2913.923 2.00e+07 2.01e+07 rept_dt_num | 225055 19113.82 102.4118 13027 19197 occp_cod | 0 -------------+-------------------------------------------------------- to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 218559 7389.991 546.4801 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015