Frequencies for mort30pnip variable in hvbp_outcome_08_06_2015 dataset :

   MORT-30-PN |
  Improvement |
       Points |      Freq.     Percent        Cum.
--------------+-----------------------------------
           0  |      1,223       40.01       40.01
           1  |        121        3.96       43.96
           2  |        136        4.45       48.41
           3  |        140        4.58       52.99
           4  |        139        4.55       57.54
           5  |        130        4.25       61.79
           6  |        141        4.61       66.40
           7  |        109        3.57       69.97
           8  |         82        2.68       72.65
           9  |        221        7.23       79.88
Not Available |        615       20.12      100.00
--------------+-----------------------------------
        Total |      3,057      100.00

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