Frequencies for first 10,000 rows of a1cres variable in namcs2012 dataset :

 Most recent result for |
                  HbA1c |      Freq.     Percent        Cum.
------------------------+-----------------------------------
                  Blank |      6,384       63.84       63.84
                Unknown |          2        0.02       63.86
N/A, provider not asked |      2,900       29.00       92.86
                      3 |          2        0.02       92.88
                    3.1 |          1        0.01       92.89
                    3.3 |          2        0.02       92.91
                    3.5 |          2        0.02       92.93
                    3.7 |          1        0.01       92.94
                    3.8 |          1        0.01       92.95
                    3.9 |          7        0.07       93.02
                      4 |          8        0.08       93.10
                    4.1 |          9        0.09       93.19
                    4.2 |         12        0.12       93.31
                    4.3 |         10        0.10       93.41
                    4.4 |         12        0.12       93.53
                    4.5 |          7        0.07       93.60
                    4.6 |          3        0.03       93.63
                    4.7 |         22        0.22       93.85
                    4.8 |         19        0.19       94.04
                    4.9 |         22        0.22       94.26
                      5 |         18        0.18       94.44
                    5.1 |         12        0.12       94.56
                    5.2 |         15        0.15       94.71
                    5.3 |         21        0.21       94.92
                    5.4 |         18        0.18       95.10
                    5.5 |         31        0.31       95.41
                    5.6 |         35        0.35       95.76
                    5.7 |         26        0.26       96.02
                    5.8 |         31        0.31       96.33
                    5.9 |         29        0.29       96.62
                      6 |         20        0.20       96.82
                    6.1 |         23        0.23       97.05
                    6.2 |         16        0.16       97.21
                    6.3 |         21        0.21       97.42
                    6.4 |         19        0.19       97.61
                    6.5 |         16        0.16       97.77
                    6.6 |         15        0.15       97.92
                    6.7 |         12        0.12       98.04
                    6.8 |         13        0.13       98.17
                    6.9 |          4        0.04       98.21
                      7 |         15        0.15       98.36
                    7.1 |          6        0.06       98.42
                    7.2 |          7        0.07       98.49
                    7.3 |          4        0.04       98.53
                    7.4 |          9        0.09       98.62
                    7.5 |         11        0.11       98.73
                    7.6 |          8        0.08       98.81
                    7.7 |          5        0.05       98.86
                    7.8 |          6        0.06       98.92
                    7.9 |          5        0.05       98.97
                      8 |          7        0.07       99.04
                    8.1 |          2        0.02       99.06
                    8.2 |          3        0.03       99.09
                    8.3 |          3        0.03       99.12
                    8.4 |         10        0.10       99.22
                    8.5 |          3        0.03       99.25
                    8.6 |          4        0.04       99.29
                    8.8 |          2        0.02       99.31
                    8.9 |          1        0.01       99.32
                    9.1 |          2        0.02       99.34
                    9.2 |          6        0.06       99.40
                    9.4 |          3        0.03       99.43
                    9.5 |          1        0.01       99.44
                    9.6 |          2        0.02       99.46
                    9.8 |          3        0.03       99.49
                    9.9 |          1        0.01       99.50
                   10.2 |          2        0.02       99.52
                   10.3 |          2        0.02       99.54
                   10.4 |          2        0.02       99.56
                   10.6 |          2        0.02       99.58
                   10.7 |          1        0.01       99.59
                   10.8 |          1        0.01       99.60
                   10.9 |          1        0.01       99.61
                   11.2 |          3        0.03       99.64
                   11.3 |          3        0.03       99.67
                   11.4 |          2        0.02       99.69
                   11.6 |          2        0.02       99.71
                   11.7 |          1        0.01       99.72
                   11.8 |          2        0.02       99.74
                   11.9 |          1        0.01       99.75
                     12 |          1        0.01       99.76
                   12.1 |          1        0.01       99.77
                   12.2 |          1        0.01       99.78
                   12.3 |          1        0.01       99.79
                   12.4 |          1        0.01       99.80
                   12.5 |          2        0.02       99.82
                   12.6 |          1        0.01       99.83
                   12.7 |          4        0.04       99.87
                   12.8 |          4        0.04       99.91
                   12.9 |          9        0.09      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

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