Summary statistics for demo2008q1 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 104412 5636636 31341.23 5476771 5771298 caseid | 104412 6528113 179897.6 3114684 6689549 i_f_code | 0 i_f_code_num | 104412 71.33021 .9439116 70 72 foll_seq | 0 -------------+-------------------------------------------------------- image | 0 event_dt | 71856 2.01e+07 44605.26 1.01e+07 2.01e+07 event_dt_num | 71856 17117.8 1630.872 -347822 17621 mfr_dt | 96789 2.01e+07 8836.088 1.97e+07 2.01e+07 mfr_dt_num | 96789 17504.71 290.0475 4798 17885 -------------+-------------------------------------------------------- fda_dt | 104412 2.01e+07 329.5096 2.01e+07 2.01e+07 fda_dt_num | 104412 17580.25 25.57397 17441 17622 rept_cod | 0 rept_cod_num | 104412 729544.7 49746.07 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 58113 202.1102 1872.672 -2 35069 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 34720 88.68797 63.21596 0 5020 wt_cod | 0 rept_dt | 104398 2.01e+07 3306.615 2.00e+07 2.01e+07 rept_dt_num | 104398 17557.6 79.36694 14661 17673 occp_cod | 0 -------------+-------------------------------------------------------- death_dt | 7554 2.01e+07 26078.32 1.92e+07 2.01e+07 to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 89540 7432.076 536.5815 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015