Summary statistics for demo2009q1 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 111438 6083813 32442.53 5909980 6253112 caseid | 111438 6863251 207129.3 3041652 7053425 i_f_code | 0 i_f_code_num | 111438 71.41578 .909468 70 72 foll_seq | 0 -------------+-------------------------------------------------------- image | 0 event_dt | 74745 2.01e+07 30037.64 1.91e+07 2.01e+07 event_dt_num | 74745 17400.91 1100.761 -20088 17986 mfr_dt | 102956 2.01e+07 9219.706 1.99e+07 2.01e+07 mfr_dt_num | 102956 17870.02 309.176 11231 17987 -------------+-------------------------------------------------------- fda_dt | 111438 2.01e+07 169.5529 2.01e+07 2.01e+07 fda_dt_num | 111438 17944.82 24.53368 17811 17987 rept_cod | 0 rept_cod_num | 111438 724563.5 47129.87 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 78713 156.6532 1557.636 -71 36158 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 33359 89.56682 92.05382 0 10875 wt_cod | 0 rept_dt | 111353 2.01e+07 2066.569 2.00e+07 2.01e+07 rept_dt_num | 111353 17940.74 39.75183 13515 17988 occp_cod | 0 -------------+-------------------------------------------------------- death_dt | 9349 2.01e+07 19989.84 1.94e+07 2.01e+07 to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 94315 7488.043 527.0501 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015