Frequencies for first 10,000 rows of prov1775 variable in pos1992 dataset :

      renal |
 transplant |
center date |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,938       99.38       99.38
     760701 |          2        0.02       99.40
     760901 |          2        0.02       99.42
     770728 |          1        0.01       99.43
     770802 |          1        0.01       99.44
     770803 |          1        0.01       99.45
     770808 |          3        0.03       99.48
     770811 |          1        0.01       99.49
     770812 |          3        0.03       99.52
     770815 |          1        0.01       99.53
     770817 |          1        0.01       99.54
     770818 |          1        0.01       99.55
     770829 |          1        0.01       99.56
     770831 |          1        0.01       99.57
     770901 |          1        0.01       99.58
     801106 |          1        0.01       99.59
     810223 |          1        0.01       99.60
     820928 |          1        0.01       99.61
     821117 |          2        0.02       99.63
     840628 |          1        0.01       99.64
     850825 |          1        0.01       99.65
     860127 |          2        0.02       99.67
     860722 |          1        0.01       99.68
     860801 |          1        0.01       99.69
     870101 |          2        0.02       99.71
     870108 |          1        0.01       99.72
     870120 |          1        0.01       99.73
     870313 |          1        0.01       99.74
     880306 |          1        0.01       99.75
     880401 |          1        0.01       99.76
     880405 |          1        0.01       99.77
     880429 |          1        0.01       99.78
     880520 |          2        0.02       99.80
     881208 |          1        0.01       99.81
     891207 |          1        0.01       99.82
     900717 |          1        0.01       99.83
     900830 |          1        0.01       99.84
     901001 |          1        0.01       99.85
     901018 |          1        0.01       99.86
     910412 |          1        0.01       99.87
     910724 |          1        0.01       99.88
     910730 |          1        0.01       99.89
     910925 |          1        0.01       99.90
     911002 |          1        0.01       99.91
     911015 |          1        0.01       99.92
     911113 |          1        0.01       99.93
     911202 |          1        0.01       99.94
     920306 |          1        0.01       99.95
     920310 |          1        0.01       99.96
     920311 |          1        0.01       99.97
     920715 |          1        0.01       99.98
     921029 |          1        0.01       99.99
     921103 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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