Frequencies for first 10,000 rows of intent variable in nhamcsed2000 dataset :

       intentionality of injury from |
                            checkbox |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                Yes (self-inflicted) |        106        1.06        1.06
                       Yes (assault) |        251        2.51        3.57
                   No, unintentional |      2,773       27.73       31.30
                             Unknown |        501        5.01       36.31
Not applicable (not an injury visit) |      6,369       63.69      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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