Summary statistics for demo2007q2 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 83977 5333881 26751.23 5198124 5478536 caseid | 83977 6293692 154191.2 3016976 6436053 i_f_code | 0 i_f_code_num | 83977 71.35058 .9365368 70 72 foll_seq | 0 -------------+-------------------------------------------------------- image | 0 event_dt | 57696 2.01e+07 19855.59 1.96e+07 2.01e+07 event_dt_num | 57696 16925.56 722.5786 366 17345 mfr_dt | 78154 2.01e+07 3266.018 1.99e+07 2.01e+07 mfr_dt_num | 78154 17253.44 98.74415 12291 17358 -------------+-------------------------------------------------------- fda_dt | 83977 2.01e+07 90.96393 2.01e+07 2.01e+07 fda_dt_num | 83977 17301.05 28.99556 17170 17346 rept_cod | 0 rept_cod_num | 83977 722171 45500.78 687382 806982 mfr_num | 0 -------------+-------------------------------------------------------- mfr_sndr | 0 age | 51369 241.8954 2024.939 -5 31457 age_cod | 0 sex | 0 e_sub | 0 -------------+-------------------------------------------------------- wt | 28650 95.84699 60.49523 .5 3260 wt_cod | 0 rept_dt | 83943 2.01e+07 890.4484 2.00e+07 2.01e+07 rept_dt_num | 83943 17293.14 39.94285 15781 17391 occp_cod | 0 -------------+-------------------------------------------------------- death_dt | 6153 2.01e+07 18363.97 1.95e+07 2.01e+07 to_mfr | 0 confid | 0 reporter_c~y | 0 occp_cod_num | 70327 7506.892 507.7363 6778 8072 by Jean Roth , jroth@nber.org , 18 Dec 2015