Frequencies for first 10,000 rows of timemd variable in nhamcsopd1998 dataset :

       time spent with |
  physician in minutes |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
             0 minutes |      1,556       15.56       15.56
              1 minute |          6        0.06       15.62
             2 minutes |          4        0.04       15.66
             3 minutes |          7        0.07       15.73
             4 minutes |          8        0.08       15.81
             5 minutes |        219        2.19       18.00
             6 minutes |         34        0.34       18.34
             7 minutes |         32        0.32       18.66
             8 minutes |         68        0.68       19.34
             9 minutes |          6        0.06       19.40
            10 minutes |      1,035       10.35       29.75
            11 minutes |         10        0.10       29.85
            12 minutes |         33        0.33       30.18
            13 minutes |          9        0.09       30.27
            14 minutes |         12        0.12       30.39
            15 minutes |      2,125       21.25       51.64
            16 minutes |         24        0.24       51.88
            17 minutes |          4        0.04       51.92
            18 minutes |         11        0.11       52.03
            19 minutes |          3        0.03       52.06
            20 minutes |      1,756       17.56       69.62
            21 minutes |          2        0.02       69.64
            22 minutes |          8        0.08       69.72
            23 minutes |         43        0.43       70.15
            24 minutes |          8        0.08       70.23
            25 minutes |        463        4.63       74.86
            27 minutes |          2        0.02       74.88
            28 minutes |          1        0.01       74.89
            30 minutes |      1,393       13.93       88.82
            31 minutes |          3        0.03       88.85
            32 minutes |          4        0.04       88.89
            33 minutes |          2        0.02       88.91
            34 minutes |          1        0.01       88.92
            35 minutes |        128        1.28       90.20
            37 minutes |          4        0.04       90.24
            38 minutes |          2        0.02       90.26
            39 minutes |          1        0.01       90.27
            40 minutes |        192        1.92       92.19
            41 minutes |          2        0.02       92.21
            42 minutes |          4        0.04       92.25
            43 minutes |          3        0.03       92.28
            44 minutes |          1        0.01       92.29
            45 minutes |        221        2.21       94.50
            46 minutes |          1        0.01       94.51
            50 minutes |         69        0.69       95.20
            51 minutes |          2        0.02       95.22
            52 minutes |          1        0.01       95.23
            53 minutes |          3        0.03       95.26
            55 minutes |         10        0.10       95.36
            58 minutes |          3        0.03       95.39
                1 hour |        313        3.13       98.52
  1 hour and 5 minutes |          6        0.06       98.58
 1 hour and 10 minutes |          8        0.08       98.66
 1 hour and 12 minutes |          1        0.01       98.67
 1 hour and 15 minutes |         16        0.16       98.83
 1 hour and 18 minutes |          1        0.01       98.84
 1 hour and 20 minutes |         47        0.47       99.31
 1 hour and 25 minutes |          4        0.04       99.35
 1 hour and 30 minutes |         23        0.23       99.58
 1 hour and 35 minutes |          2        0.02       99.60
 1 hour and 40 minutes |          2        0.02       99.62
 1 hour and 45 minutes |          1        0.01       99.63
 1 hour and 50 minutes |          1        0.01       99.64
               2 hours |         12        0.12       99.76
2 hours and 28 minutes |          1        0.01       99.77
2 hours and 30 minutes |          2        0.02       99.79
2 hours and 33 minutes |          1        0.01       99.80
2 hours and 37 minutes |          1        0.01       99.81
2 hours and 57 minutes |          2        0.02       99.83
               3 hours |          2        0.02       99.85
               4 hours |         15        0.15      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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