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. 2019 Dec 12;22(2):151–161. doi: 10.1007/s11121-019-01071-9

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© The Author(s) 2019, corrected publication March 2020

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Fig. 2 — Bullying perpetration across time by sex and cohort. Note: SC = standard-of-care condition; DM = Dating Matters condition. Percent of Maximum Score (POMS) refers to the maximum possible score given the number of items and response categories in a scale, rather than the maximum observed score. Mean POMS scores have been constrained to be equal when not significantly different; non-overlapping lines at any time point represent a statistically significant group difference