Frequencies for first 10,000 rows of u_apncu variable in linkpe2009psden dataset :

Adequacy of |
   Prenatal |
       Care |
Utilization |
      Index |
  (f_mpcb_u |
  rep flag) |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015