Frequencies for mort30pnip variable in hvbp_outcome_05_28_2015 dataset :

   MORT-30-PN |
  Improvement |
       Points |      Freq.     Percent        Cum.
--------------+-----------------------------------
           0  |      1,227       39.92       39.92
           1  |        121        3.94       43.85
           2  |        136        4.42       48.28
           3  |        141        4.59       52.86
           4  |        140        4.55       57.42
           5  |        135        4.39       61.81
           6  |        141        4.59       66.40
           7  |        109        3.55       69.94
           8  |         82        2.67       72.61
           9  |        222        7.22       79.83
Not Available |        620       20.17      100.00
--------------+-----------------------------------
        Total |      3,074      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016