Frequencies for first 10,000 rows of timemd variable in namcs1998 dataset :

       time spent with |
physician (in minutes) |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
             0 minutes |        364        3.64        3.64
             2 minutes |          1        0.01        3.65
             3 minutes |          5        0.05        3.70
             4 minutes |          6        0.06        3.76
             5 minutes |        301        3.01        6.77
             6 minutes |         28        0.28        7.05
             7 minutes |         47        0.47        7.52
             8 minutes |         81        0.81        8.33
             9 minutes |         16        0.16        8.49
            10 minutes |      1,991       19.91       28.40
            11 minutes |         20        0.20       28.60
            12 minutes |        150        1.50       30.10
            13 minutes |         92        0.92       31.02
            14 minutes |         20        0.20       31.22
            15 minutes |      3,411       34.11       65.33
            16 minutes |          9        0.09       65.42
            17 minutes |         13        0.13       65.55
            18 minutes |         37        0.37       65.92
            19 minutes |          3        0.03       65.95
            20 minutes |      1,387       13.87       79.82
            21 minutes |          4        0.04       79.86
            22 minutes |         10        0.10       79.96
            23 minutes |         10        0.10       80.06
            24 minutes |          2        0.02       80.08
            25 minutes |        288        2.88       82.96
            26 minutes |          2        0.02       82.98
            28 minutes |          7        0.07       83.05
            30 minutes |      1,166       11.66       94.71
            32 minutes |          2        0.02       94.73
            34 minutes |          1        0.01       94.74
            35 minutes |         65        0.65       95.39
            38 minutes |          4        0.04       95.43
            39 minutes |          1        0.01       95.44
            40 minutes |        112        1.12       96.56
            42 minutes |          6        0.06       96.62
            43 minutes |          3        0.03       96.65
            44 minutes |          2        0.02       96.67
            45 minutes |        184        1.84       98.51
            47 minutes |          1        0.01       98.52
            48 minutes |          1        0.01       98.53
            50 minutes |         29        0.29       98.82
            52 minutes |          1        0.01       98.83
            53 minutes |          1        0.01       98.84
            55 minutes |          9        0.09       98.93
            58 minutes |          1        0.01       98.94
                1 hour |         80        0.80       99.74
   1 hour and 1 minute |          1        0.01       99.75
  1 hour and 5 minutes |          4        0.04       99.79
  1 hour and 6 minutes |          1        0.01       99.80
  1 hour and 7 minutes |          1        0.01       99.81
 1 hour and 10 minutes |          3        0.03       99.84
 1 hour and 15 minutes |          3        0.03       99.87
 1 hour and 17 minutes |          1        0.01       99.88
 1 hour and 22 minutes |          1        0.01       99.89
 1 hour and 30 minutes |          3        0.03       99.92
 1 hour and 39 minutes |          2        0.02       99.94
 1 hour and 40 minutes |          1        0.01       99.95
 1 hour and 45 minutes |          1        0.01       99.96
2 hours and 10 minutes |          1        0.01       99.97
2 hours and 56 minutes |          1        0.01       99.98
3 hours and 38 minutes |          1        0.01       99.99
               4 hours |          1        0.01      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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