Summary statistics for miacc dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- st_case | 34,942 274854.8 160371.9 10001 560099 year | 34,942 1992 0 1992 1992 a1 | 34,942 8.022008 10.30172 0 70 a2 | 34,942 8.026415 10.33604 0 70 a3 | 34,942 8.072463 10.36355 0 70 -------------+--------------------------------------------------------- a4 | 34,942 8.02859 10.32063 0 70 a5 | 34,942 8.025356 10.32792 0 70 a6 | 34,942 8.001345 10.3359 0 70 a7 | 34,942 7.984002 10.32161 0 70 a8 | 34,942 8.008013 10.32984 0 70 -------------+--------------------------------------------------------- a9 | 34,942 8.003034 10.33014 0 70 a10 | 34,942 7.97078 10.30149 0 70 by Jean Roth , jroth@nber.org , 18 Apr 2016