Frequencies for first 10,000 rows of prov1710 variable in pos1991 dataset :

psychiatric |
       unit |
termination |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,953       99.53       99.53
     841101 |          1        0.01       99.54
     850201 |          1        0.01       99.55
     850701 |          2        0.02       99.57
     850901 |          1        0.01       99.58
     850923 |          1        0.01       99.59
     851201 |          1        0.01       99.60
     851224 |          1        0.01       99.61
     860701 |          3        0.03       99.64
     880101 |          2        0.02       99.66
     880201 |          1        0.01       99.67
     880301 |          1        0.01       99.68
     880701 |          2        0.02       99.70
     881001 |          1        0.01       99.71
     881231 |          2        0.02       99.73
     890101 |          6        0.06       99.79
     890331 |          1        0.01       99.80
     890630 |          1        0.01       99.81
     890701 |          6        0.06       99.87
     890818 |          1        0.01       99.88
     890901 |          1        0.01       99.89
     891109 |          1        0.01       99.90
     900101 |          1        0.01       99.91
     900630 |          2        0.02       99.93
     900901 |          1        0.01       99.94
     910101 |          2        0.02       99.96
     910411 |          1        0.01       99.97
     910531 |          1        0.01       99.98
     910701 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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