Frequencies for first 10,000 rows of prov1610 variable in pos1993 dataset :

      prior |
  admission |
 suspension |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,991       99.91       99.91
     850531 |          1        0.01       99.92
     860430 |          1        0.01       99.93
     860530 |          1        0.01       99.94
     911031 |          1        0.01       99.95
     920128 |          1        0.01       99.96
     920131 |          1        0.01       99.97
     920805 |          1        0.01       99.98
     930410 |          1        0.01       99.99
     930421 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016