Frequencies for first 10,000 rows of timemd variable in namcs1995 dataset :

       time spent with |
physician (in minutes) |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
             0 minutes |      1,192       11.92       11.92
              1 minute |          1        0.01       11.93
             2 minutes |          5        0.05       11.98
             3 minutes |         23        0.23       12.21
             4 minutes |         10        0.10       12.31
             5 minutes |        277        2.77       15.08
             6 minutes |         27        0.27       15.35
             7 minutes |         59        0.59       15.94
             8 minutes |        113        1.13       17.07
             9 minutes |         18        0.18       17.25
            10 minutes |      1,760       17.60       34.85
            11 minutes |         12        0.12       34.97
            12 minutes |        149        1.49       36.46
            13 minutes |         28        0.28       36.74
            14 minutes |         24        0.24       36.98
            15 minutes |      2,941       29.41       66.39
            16 minutes |         17        0.17       66.56
            17 minutes |         32        0.32       66.88
            18 minutes |         89        0.89       67.77
            19 minutes |          9        0.09       67.86
            20 minutes |      1,344       13.44       81.30
            21 minutes |         10        0.10       81.40
            22 minutes |         13        0.13       81.53
            23 minutes |          7        0.07       81.60
            24 minutes |          1        0.01       81.61
            25 minutes |        332        3.32       84.93
            26 minutes |          1        0.01       84.94
            27 minutes |          2        0.02       84.96
            28 minutes |          2        0.02       84.98
            29 minutes |          1        0.01       84.99
            30 minutes |        887        8.87       93.86
            31 minutes |          2        0.02       93.88
            32 minutes |          3        0.03       93.91
            33 minutes |          1        0.01       93.92
            34 minutes |          2        0.02       93.94
            35 minutes |         92        0.92       94.86
            36 minutes |          2        0.02       94.88
            37 minutes |          1        0.01       94.89
            38 minutes |          3        0.03       94.92
            40 minutes |        105        1.05       95.97
            42 minutes |          2        0.02       95.99
            44 minutes |          3        0.03       96.02
            45 minutes |        198        1.98       98.00
            46 minutes |          1        0.01       98.01
            48 minutes |          1        0.01       98.02
            50 minutes |         25        0.25       98.27
            52 minutes |          1        0.01       98.28
            54 minutes |          1        0.01       98.29
            55 minutes |          8        0.08       98.37
            58 minutes |          1        0.01       98.38
                1 hour |        125        1.25       99.63
  1 hour and 5 minutes |          3        0.03       99.66
  1 hour and 6 minutes |          1        0.01       99.67
 1 hour and 10 minutes |          5        0.05       99.72
 1 hour and 15 minutes |          7        0.07       99.79
 1 hour and 20 minutes |          2        0.02       99.81
 1 hour and 30 minutes |         11        0.11       99.92
 1 hour and 35 minutes |          1        0.01       99.93
 1 hour and 45 minutes |          2        0.02       99.95
               2 hours |          3        0.03       99.98
 2 hours and 3 minutes |          1        0.01       99.99
2 hours and 33 minutes |          1        0.01      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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