Summary statistics for demo2017q1 dataset : by Jean Roth , jroth@nber.org , 18 Sep 2017 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 353,209 1.35e+08 6.10e+07 3.88e+07 1.33e+09 caseid | 353,209 1.31e+07 483016.2 3880460 1.34e+07 caseversion | 353,209 1.499347 1.434279 1 87 i_f_code | 0 i_f_code_num | 353,209 71.46193 .8869159 70 72 -------------+--------------------------------------------------------- event_dt | 173,191 1.27e+07 9692449 1929 2.02e+07 event_dt_num | 173,191 20492.78 826.7706 -11140 21168 mfr_dt | 339,423 2.02e+07 35977.34 40603 2.02e+07 mfr_dt_num | 339,422 20777.22 339.2234 10451 21170 init_fda_dt | 353,209 2.02e+07 5690.023 2.00e+07 2.02e+07 -------------+--------------------------------------------------------- init_fda_d~m | 353,209 20823.52 170.8151 15691 20909 fda_dt | 353,209 2.02e+07 86.50765 2.02e+07 2.02e+07 fda_dt_num | 353,209 20866.87 24.85438 20778 20909 rept_cod | 0 rept_cod_num | 353,209 752192.6 54540.29 687382 806982 -------------+--------------------------------------------------------- auth_num | 0 mfr_num | 0 mfr_sndr | 0 lit_ref | 0 age | 198,227 177.7647 1711.205 -967.05 35414 -------------+--------------------------------------------------------- age_cod | 0 age_grp | 0 age_grp_num | 0 sex | 0 e_sub | 0 -------------+--------------------------------------------------------- wt | 66,539 75.46369 26.89245 0 637.19 wt_cod | 0 rept_dt | 352,816 2.02e+07 101306.4 2016 2.02e+07 rept_dt_num | 352,807 20866 36.44651 18378 20915 to_mfr | 0 -------------+--------------------------------------------------------- occp_cod | 0 reporter_c~y | 0 occr_country | 0 occp_cod_num | 348,503 7346.146 565.2577 6778 8072 by Jean Roth , jroth@nber.org , 18 Sep 2017