Frequencies for first 10,000 rows of pastvis variable in namcs2011 dataset :

     If yes, how many visits in past 12 |
                                months? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                         Not applicable |      1,144       11.44       11.44
                                      0 |        555        5.55       16.99
                                      1 |      1,507       15.07       32.06
                                      2 |      1,418       14.18       46.24
                                      3 |      1,183       11.83       58.07
                                      4 |        979        9.79       67.86
                                      5 |        714        7.14       75.00
                                      6 |        543        5.43       80.43
                                      7 |        397        3.97       84.40
                                      8 |        324        3.24       87.64
                                      9 |        265        2.65       90.29
                                     10 |        205        2.05       92.34
                                     11 |        120        1.20       93.54
                                     12 |        134        1.34       94.88
                                     13 |         94        0.94       95.82
                                     14 |         61        0.61       96.43
                                     15 |         51        0.51       96.94
                                     16 |         44        0.44       97.38
                                     17 |         40        0.40       97.78
                                     18 |         36        0.36       98.14
                                     19 |         26        0.26       98.40
                                     20 |         23        0.23       98.63
                                     21 |         13        0.13       98.76
                                     22 |         19        0.19       98.95
                                     23 |         10        0.10       99.05
                                     24 |         14        0.14       99.19
25 or more (visits to all specialties e |         52        0.52       99.71
                                     26 |          2        0.02       99.73
                                     27 |          3        0.03       99.76
                                     28 |          5        0.05       99.81
                                     29 |          3        0.03       99.84
31 or more (visits to 'all other' speci |          6        0.06       99.90
                                     34 |          3        0.03       99.93
                                     38 |          1        0.01       99.94
                                     41 |          1        0.01       99.95
                                     42 |          1        0.01       99.96
                                     46 |          2        0.02       99.98
                                     47 |          1        0.01       99.99
                                     68 |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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