Frequencies for first 10,000 rows of u_apncu variable in natlterr2005 dataset :

Adequacy of |
   Prenatal |
       Care |
Utilization |
  Index RFP |
669=f_mpcb_ |
        u U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,770       17.70       17.70
          2 |        764        7.64       25.34
          3 |      1,073       10.73       36.07
          4 |        830        8.30       44.37
          9 |      1,818       18.18       62.55
          . |      3,745       37.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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