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Sex-specific threshold models: proportion of youth with self-injury among those with zero to four or more stressful events from ages 13 to 20. Asterisks represent p-value of the contrast between particular numbers of life events vs. zero events (reference) from models that adjusted for parental educational background, adolescent educational level at previous assessment, parental divorce by child age 11, and migration background. †p < 0.10; *p < 0.05, **p < 0.01, ***p < 0.001.
