TABLE 2—
Gender Differences in Rates of Nonsuicidal Self-Injury and Associated Health Risks: Youth Risk Behavior Surveillance System, United States, 2015
| Item | Affirmative Responses, % | Test for Gender Differencesa | |
| χ2 | P | ||
| Nonsuicidal self-injury (12 mo) | 1763.6 | < .001 | |
| Male (n = 32 150) | 11.3 | ||
| Female (n = 32 521) | 23.8 | ||
| Total (n = 64 671) | 17.6 | ||
| Sad 2 wk (12 mo) | 2072.8 | < .001 | |
| Male (n = 32 330) | 19.7 | ||
| Female (n = 32 822) | 38.2 | ||
| Total (n = 65 152) | 28.8 | ||
| Suicidal thoughts (12 mo) | 665.8 | < .001 | |
| Male (n = 21 592) | 10.9 | ||
| Female (n = 22 311) | 19.7 | ||
| Total (n = 43 903) | 15.3 | ||
| Suicide plan (12 mo) | 608.4 | < .001 | |
| Male (n = 24 161) | 9.3 | ||
| Female (n = 24 822) | 16.9 | ||
| Total (n = 48 983) | 13.1 | ||
| Attempted suicide ≥ 1 times (12 mo) | 452.4 | < .001 | |
| Male (n = 29 230) | 5.7 | ||
| Female (n = 30 438) | 10.5 | ||
| Total (n = 69 668) | 8.1 | ||
| Suicide attempt required doctor visit (12 mo) | 97.4 | < .001 | |
| Male (n = 27 902) | 2.0 | ||
| Female (n = 29 141) | 3.3 | ||
| Total (n = 57 043) | 2.7 | ||
| Had sex with ≥ 1 people (3 mo) | 7.1 | .23 | |
| Male (n = 29 479) | 28.3 | ||
| Female (n = 31 018) | 27.3 | ||
| Total (n = 60 497) | 27.8 | ||
| Forced to have sex (ever) | 580.7 | < .001 | |
| Male (n = 31 740) | 4.7 | ||
| Female (n = 32 016) | 9.7 | ||
| Total (n = 63 756) | 7.2 | ||
| Fought ≥ 1 times (12 mo) | 1003.1 | < .001 | |
| Male (n = 25 085) | 26.4 | ||
| Female (n = 25 924) | 15.1 | ||
| Total (n = 51 009) | 20.8 | ||
| Electronically bullied (12 mo) | 1228.1 | < .001 | |
| Male (n = 32 329) | 9.5 | ||
| Female (n = 32 839) | 19.2 | ||
| Total (n = 65 168) | 14.3 | ||
| Trying to change (lose or gain) weight | 226.9 | < .001 | |
| Male (n = 28 008) | 61.2 | ||
| Female (n = 28 389) | 67.3 | ||
| Total (n = 56 397) | 64.2 | ||
| Gay, lesbian, bisexual, unsure | 899.4 | < .001 | |
| Male (n = 23 900) | 8.0 | ||
| Female (n = 24 585) | 16.9 | ||
| Total (n = 48 485) | 12.4 | ||
| Drank alcohol (30 d) | 45.1 | < .001 | |
| Male (n = 30 402) | 30.9 | ||
| Female (n = 31 409) | 33.4 | ||
| Total (n = 61 811) | 32.1 | ||
| Smoked cigarettes ≥ 1 times (30 d) | 68.0 | < .001 | |
| Male (n = 31 355) | 11.1 | ||
| Female (n = 32 261) | 9.1 | ||
| Total (n = 63 616) | 10.1 | ||
| Used marijuana ≥ 1 times (30 d) | 21.3 | .010 | |
| Male (n = 31 912) | 22.3 | ||
| Female (n = 32 694) | 20.8 | ||
| Total (n = 64 606) | 21.6 | ||
| Hard drug use (lifetime) | 78.7 | < .001 | |
| Male (n = 31 782) | 9.4 | ||
| Female (n = 32 405) | 7.4 | ||
| Total (n = 64 187) | 8.4 | ||
Note. Frequencies reported are unweighted counts; affirmative responses and significance tests computed with weighted data.
a
All Rao-Scott χ2 tests had 1 degree of freedom.