Summary statistics for demo2007q3 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 96035 5425814 28514.27 5285252 5530192 caseid | 96035 6368658 142350.9 3185282 6526737 i_f_code | 0 i_f_code_num | 96035 71.2071 .9783245 70 72 foll_seq | 0 -------------+-------------------------------------------------------- image | 0 event_dt | 63211 2.01e+07 22529.73 1.91e+07 2.01e+07 event_dt_num | 63211 16948.12 829.6035 -19909 17437 mfr_dt | 90308 2.01e+07 3379.465 1.99e+07 2.01e+07 mfr_dt_num | 90308 17335.45 125.0554 11828 17437 -------------+-------------------------------------------------------- fda_dt | 96035 2.01e+07 80.93191 2.01e+07 2.01e+07 fda_dt_num | 96035 17394.5 26.23565 17258 17439 rept_cod | 0 rept_cod_num | 96035 736873.6 52396.07 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 55312 289.6747 2238.499 -66 35945 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 28961 94.1848 64.97513 0 3200 wt_cod | 0 rept_dt | 95991 2.01e+07 1038.239 2.00e+07 2.01e+07 rept_dt_num | 95991 17387.15 49.75949 15166 17440 occp_cod | 0 -------------+-------------------------------------------------------- death_dt | 6276 2.01e+07 22445.82 1.93e+07 2.01e+07 to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 81768 7384.021 541.8555 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015