4.7 Article

Sex differences in the severity and natural recovery of child PTSD symptoms: a longitudinal analysis of children exposed to acute trauma

期刊

PSYCHOLOGICAL MEDICINE
卷 53, 期 6, 页码 2682-2688

出版社

CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0033291721004694

关键词

Childhood/adolescence; PTSD; sex-differences; trauma recovery; longitudinal; PACT/R

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Higher levels of PTSD symptoms are present among trauma-exposed females compared to males in adulthood. However, little is known about the emergence of this sex difference during development. This study found that sex differences in PTSD symptoms become apparent during adolescence, with females showing more significant symptom reduction at the age of 13.
Background. Higher levels of PTSD symptoms are present among trauma-exposed females v. males in adulthood; however, much less is known about the emergence of this sex difference during development. Methods. In a multi-study sample of 7-18-year-olds (n = 3397), we examined the effect of sex and age on the severity of PTSD symptoms after a single incident trauma at 1 month (T1), and on symptom change after a natural recovery period of 3 (T2) and 6 months (T3). PTSD scores were harmonised across measurement types, and linear regressions were used to determine sex and age effects, adjusting for study level variance and trauma type. Results. A sex x age interaction was observed at T1 (p < 0.001) demonstrating that older age was associated with greater PTSD symptom severity in females (beta = 0.008, p = 0.047), but less severe symptoms in males (beta = -0.011, p = 0.014). The same pattern was observed at T2 and T3, with sex differences beginning to emerge by age 12 years. PTSD symptoms decreased naturally by similar to 25% at T2 with little further improvement by 13. Further, females showed a greater reduction in symptoms at 13 than males, although the same effect was not observed at T2. Conclusions. Sex differences in PTSD symptoms become apparent during adolescence, due to opposing changes in susceptibility occurring in females and males with age. Understanding the factors contributing to these findings is likely to provide wider insight into sex-specific psychological vulnerability to trauma-related psychopathology.

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