Summary statistics for demo2010q2 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 144452 6737612 45326.32 6524435 7007769 caseid | 144452 7340275 234094.3 3013834 7636827 i_f_code | 0 i_f_code_num | 144452 71.20753 .9782322 70 72 foll_seq | 0 -------------+-------------------------------------------------------- image | 0 event_dt | 92327 2.01e+07 29586.84 1.91e+07 2.01e+07 event_dt_num | 92327 17833.04 1075.968 -18979 18442 mfr_dt | 137094 2.01e+07 27856.16 1.01e+07 2.01e+07 mfr_dt_num | 137094 18309.65 1014.171 -346835 18454 -------------+-------------------------------------------------------- fda_dt | 144452 2.01e+07 83.84206 2.01e+07 2.01e+07 fda_dt_num | 144452 18401.65 27.30737 18266 18443 rept_cod | 0 rept_cod_num | 144452 727926.8 48641.07 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 103472 174.1717 1635.182 -2 34967 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 45491 82.74207 62.94299 .065 9037 wt_cod | 0 rept_dt | 144167 2.01e+07 670.2909 2.00e+07 2.01e+07 rept_dt_num | 144167 18398.87 35.43194 14021 18445 occp_cod | 0 -------------+-------------------------------------------------------- death_dt | 12331 2.01e+07 16332.96 1.98e+07 2.02e+07 to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 126321 7464.776 534.9867 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015