Frequencies for v21 variable in DAP_cancer_events_state dataset :

              v21 |      Freq.     Percent        Cum.
------------------+-----------------------------------
                  |          2        3.77        3.77
             10.0 |          2        3.77        7.55
             10.2 |          2        3.77       11.32
             10.3 |          2        3.77       15.09
             10.4 |          1        1.89       16.98
             10.7 |          1        1.89       18.87
             11.1 |          1        1.89       20.75
             11.5 |          1        1.89       22.64
             11.8 |          1        1.89       24.53
             12.5 |          2        3.77       28.30
             12.8 |          1        1.89       30.19
             13.0 |          1        1.89       32.08
             13.1 |          1        1.89       33.96
             15.1 |          1        1.89       35.85
             15.2 |          1        1.89       37.74
             15.3 |          1        1.89       39.62
              5.1 |          1        1.89       41.51
              5.9 |          1        1.89       43.40
              6.2 |          2        3.77       47.17
              6.9 |          1        1.89       49.06
              7.0 |          1        1.89       50.94
              7.2 |          1        1.89       52.83
              7.3 |          1        1.89       54.72
              7.6 |          1        1.89       56.60
              7.8 |          1        1.89       58.49
              7.9 |          2        3.77       62.26
              8.3 |          2        3.77       66.04
              8.5 |          1        1.89       67.92
              8.6 |          1        1.89       69.81
              8.7 |          1        1.89       71.70
              8.9 |          1        1.89       73.58
              9.0 |          3        5.66       79.25
              9.2 |          3        5.66       84.91
              9.5 |          1        1.89       86.79
              9.6 |          3        5.66       92.45
              9.7 |          1        1.89       94.34
              9.9 |          2        3.77       98.11
Upper conf. limit |          1        1.89      100.00
------------------+-----------------------------------
            Total |         53      100.00

by Jean Roth , jroth@nber.org , 14 Mar 2018