Frequencies for first 10,000 rows of prov2035 variable in pos1995 dataset :

       self |
   dialysis |
       date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,945       99.45       99.45
     770725 |          1        0.01       99.46
     770831 |          1        0.01       99.47
     770901 |          1        0.01       99.48
     780401 |          1        0.01       99.49
     781001 |          6        0.06       99.55
     781103 |          1        0.01       99.56
     790601 |          1        0.01       99.57
     791001 |          1        0.01       99.58
     800118 |          1        0.01       99.59
     800701 |          1        0.01       99.60
     800807 |          1        0.01       99.61
     810410 |          1        0.01       99.62
     810622 |          1        0.01       99.63
     810625 |          1        0.01       99.64
     810729 |          1        0.01       99.65
     811221 |          1        0.01       99.66
     821122 |          1        0.01       99.67
     830615 |          1        0.01       99.68
     830728 |          1        0.01       99.69
     840502 |          1        0.01       99.70
     841130 |          1        0.01       99.71
     860320 |          1        0.01       99.72
     861216 |          1        0.01       99.73
     870101 |          1        0.01       99.74
     870201 |          1        0.01       99.75
     870401 |          1        0.01       99.76
     870511 |          2        0.02       99.78
     870710 |          1        0.01       99.79
     870902 |          1        0.01       99.80
     871001 |          1        0.01       99.81
     881104 |          1        0.01       99.82
     890118 |          1        0.01       99.83
     890328 |          1        0.01       99.84
     890607 |          1        0.01       99.85
     900228 |          1        0.01       99.86
     900709 |          1        0.01       99.87
     900905 |          1        0.01       99.88
     910909 |          1        0.01       99.89
     911219 |          1        0.01       99.90
     930210 |          1        0.01       99.91
     930614 |          1        0.01       99.92
     931013 |          1        0.01       99.93
     931110 |          1        0.01       99.94
     940114 |          1        0.01       99.95
     940121 |          1        0.01       99.96
     940420 |          1        0.01       99.97
     950301 |          1        0.01       99.98
     950320 |          1        0.01       99.99
     950411 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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