Summary statistics for demo2017q3 dataset : by Jean Roth , jroth@nber.org , 8 Feb 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- primaryid | 351,393 1.41e+08 6.31e+07 3.77e+07 9.47e+09 caseid | 351,393 1.37e+07 533987.2 3774935 1.42e+07 caseversion | 351,393 1.506581 1.413303 1 126 i_f_code | 0 i_f_code_num | 351,393 71.43544 .9002184 70 72 -------------+--------------------------------------------------------- event_dt | 168,283 1.25e+07 9743815 1947 2.02e+07 event_dt_num | 168,283 20610.95 961.2832 -15637 21092 mfr_dt | 335,378 2.02e+07 16998.01 1.90e+07 2.02e+07 mfr_dt_num | 335,378 20858.97 627.2667 -21914 21091 init_fda_dt | 351,393 2.02e+07 4981.151 2.00e+07 2.02e+07 -------------+--------------------------------------------------------- init_fda_d~m | 351,393 21000.93 187.7221 15417 21092 fda_dt | 351,393 2.02e+07 81.65195 2.02e+07 2.02e+07 fda_dt_num | 351,393 21047.03 26.2776 20864 21092 rept_cod | 0 rept_cod_num | 351,393 753497.5 54624.76 687382 806982 -------------+--------------------------------------------------------- auth_num | 0 mfr_num | 0 mfr_sndr | 0 lit_ref | 0 age | 195,920 174.6629 1698.542 -17 36918 -------------+--------------------------------------------------------- age_cod | 0 age_grp | 0 age_grp_num | 0 sex | 0 e_sub | 0 -------------+--------------------------------------------------------- wt | 66,352 75.14625 31.37488 .19 3165 wt_cod | 0 rept_dt | 351,204 2.02e+07 100719.6 2017 2.02e+07 rept_dt_num | 351,195 21045.41 617.7084 -344212 21093 to_mfr | 0 -------------+--------------------------------------------------------- occp_cod | 0 reporter_c~y | 0 occr_country | 0 occp_cod_num | 347,055 7351.839 563.6873 6778 8072 by Jean Roth , jroth@nber.org , 8 Feb 2018