Summary statistics for demo2006q4 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 83229 5162527 25381.53 5045669 5226527 caseid | 83229 6152667 182256.4 3048779 6263606 i_f_code | 0 i_f_code_num | 83229 71.32605 .9453574 70 72 foll_seq | 0 -------------+-------------------------------------------------------- image | 0 event_dt | 58792 2.01e+07 21930.38 1.91e+07 2.01e+07 event_dt_num | 58792 16730.32 822.0355 -18900 17163 mfr_dt | 77833 2.01e+07 5657.793 1.93e+07 2.01e+07 mfr_dt_num | 77833 17024.81 224.1939 -11368 17163 -------------+-------------------------------------------------------- fda_dt | 83229 2.01e+07 90.50588 2.01e+07 2.01e+07 fda_dt_num | 83229 17122.3 28.17324 16985 17165 rept_cod | 0 rept_cod_num | 83229 730959.9 50274.81 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 52559 184.3178 1730.015 0 34723 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 23258 101.4207 115.1189 0 8409 wt_cod | 0 rept_dt | 83047 2.01e+07 695.6367 1.99e+07 2.01e+07 rept_dt_num | 83047 17117.21 43.25015 12530 17168 occp_cod | 0 -------------+-------------------------------------------------------- death_dt | 6133 2.01e+07 18547.76 1.93e+07 2.01e+07 to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 69286 7424.159 537.0965 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015