Figure 1: Self-injury thoughts and behaviours from age 14-15 to 16-17

Bar chart

• Thoughts of self-injury
• At 14-15 (n = 536): 16.4%
• At 16-17 (n = 595): 21.2%
• At either age (n = 895): 30.1%
• Act(s) of self-injury
• At 14-15 (n = 302): 9.7%
• At 16-17 (n = 312): 11.2%
• At either age (n = 516): 17.8%

<< Return to Figure 1.

Figure 2: Escalation of self-injury from age 14-15 to 16-17

Infographic:

• NONE (no self-injury at either age) - 83.8%
• STOP (self-injury at age 14–15 but none at 16–17) - 5.4%
• START (self-injury at age 16–17 but none at 14–15) - 6.8%
• REPEAT (self-injury at both ages) - 4.0%

<< Return to Figure 2.

Figure 3: Prevalence of self-injury at ages 14-15 and 16-17, by sex

Bar chart:

Girls

• At 14-15:
• thoughts of self-injury - 24.8%
• acts of self-injury - 15.2%
• At 16-17:
• thoughts of self-injury - 29.6%
• acts of self-injury - 16.3%
• At either age
• thoughts of self-injury - 40.8%
• acts of self-injury - 25.3%
• At both ages:
• thoughts of self-injury - 15.5%
• acts of self-injury - 7.0%

Boys

• At 14-15:
• thoughts of self-injury - 8.5%;
• acts of self-injury - 4.4%
• At 16-17:
• thoughts of self-injury - 13.0%;
• acts of self-injury - 6.3%
• At either age
• thoughts of self-injury - 18.1%;
• acts of self-injury - 9.0%
• At both ages:
• thoughts of self-injury - 3.9%;
• acts of self-injury - 1.7%

<< Return to Figure 3.

Figure 4: Key risk factors across childhood associated with self-injury

Infographic:

Socio-demographics

• Increased risk - Strong effect
• Girls
• Same-sex attracted
• Protective - Strong effect
• Non-English speaking background

Early years

• Increased risk - weaker effect
• Worse parent mental health at age 4-5

Early adolescence (age 12–13)

• Increased risk - strong effect
• Depressive symptoms
• Increased risk - medium effect
• Poor quality sleep
• Victim of bullying
• Ever having repeated a grade
• Increased risk - weaker effect
• Anxiety symptoms
• Less supportive parenting (low maternal responsiveness, low paternal autonomy-granting)
• Protective - Medium effect
• Close relationship with at least one parent
• Non-government schools

<< Return to Figure 4.