Frequencies for first 10,000 rows of eformulaer variable in nhamcsed2015 datase

     Recode of EFORMULAE for |
 trending with data prior to |
                        2010 |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       Blank |         57        0.57        0.57
                     Unknown |      1,370       13.70       14.27
              Not applicable |        738        7.38       21.65
                         Yes |      7,356       73.56       95.21
                          No |        479        4.79      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017