TABLE 2

Rates of NSSI Engagement and Behavioral Methods by Gender and Grade

nRatesBehavioral Method in Lifetime
LifetimeCut/carve SkinBurn SkinInsert ObjectsPick SkinHit SelfTattoo SelfOther
n%n% ofn% ofn% ofn% ofn% ofn% ofn% of
Overall665538.02445.3713.2815.147.52547.212.01018.9
Girls366339.02163.6618.2515.239.11442.413.0515.2
 Third grade 10376.8
 Sixth grade 14132.1
 Ninth grade 1222318.9
Boys299206.7315.015.0315.015.01155.000.0525.0
 Third grade 9488.5
 Sixth grade 10676.6
 Ninth grade 9955.1
Third grade197157.6213.316.716.716.7960.000.0533.3
Sixth grade247104.0330.0110.0110.000.0550.000.0110.0
Ninth grade2212812.71970.4518.5622.2311.11140.713.8415.4
  • The sum of subgroup numbers may not be equal to the total n for data on behavioral methods because many youth reported multiple methods.