Frequencies for first 10,000 rows of totdiag variable in nhamcsopd2007 dataset :

            total |
   diag/screening |
 services ordered |
      or provided |      Freq.     Percent        Cum.
------------------+-----------------------------------
entire item blank |        119        1.19        1.19
                0 |      1,214       12.14       13.33
                1 |      1,060       10.60       23.93
                2 |      1,484       14.84       38.77
                3 |      1,701       17.01       55.78
                4 |      1,822       18.22       74.00
                5 |      1,068       10.68       84.68
                6 |        585        5.85       90.53
                7 |        347        3.47       94.00
                8 |        199        1.99       95.99
                9 |        148        1.48       97.47
               10 |         84        0.84       98.31
               11 |         44        0.44       98.75
               12 |         53        0.53       99.28
               13 |         33        0.33       99.61
               14 |         17        0.17       99.78
               15 |         10        0.10       99.88
               16 |          7        0.07       99.95
               17 |          4        0.04       99.99
               18 |          1        0.01      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016