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Highlights • Prevalence of lifetime trauma experience in a community birth cohort is 32%. • Mothers with experience of lifetime trauma have higher depressive symptoms. • Antenatal depressive symptoms are a risk factor for self-reported impaired bonding., Background Interpersonal traumas are common among expectant and new mothers and are found to have considerable impacts on women's mental health. These experiences may disrupt maternal perceptions of the mother-infant relationship, which is essential for healthy infant development, but findings are inconsistent. This study aims to explore associations between lifetime interpersonal traumas and their impact on self-reported mother-infant bonding. Methods Secondary data analysis of a representative cohort of 453 women attending at a South London maternity service. Lifetime interpersonal trauma experience and its association with self-reported mother-infant bonding (Postpartum Bonding Questionnaire) was assessed in uni- and multivariable linear regressions, the latter adjusted to account for antenatal depressive and posttraumatic symptoms, measured using the Edinburgh Postnatal Depression Scale and Posttraumatic Stress Disorder Scale, and key sociodemographic risk factors. Results Maternal lifetime trauma was not associated with perceived difficulties in mother-infant bonding at three months postnatal; however antenatal depressive symptoms, both with continuous EPDS score (0.33, 95% CI 0.17–0.50, p

Adolescents who have multiple traumatic experiences may suffer from Post-traumatic Stress Disorder (PTSD) or other mental health problems later in life. Study of trauma exposure and PTSD among adolescents is very limited in Malaysia. This study explored the prevalence of lifetime trauma, demographic risk factors, and PTSD symptoms among Malaysian adolescents. This cross-sectional study recruited 1016 adolescents aged 13 to 17 (Mage= 14.9 years). Results showed that 83% participants had at least one traumatic exposure (TE), while prevalence of PTSD symptoms was 10.2%. Adolescents with multiple TEs and those with violent and self-inflicted TE were at significantly higher risk to develop PTSD symptoms. Findings suggest that a large proportion of Malaysian adolescents are exposed to a variety of traumatic events since childhood. Trauma exposure should be included as an important component in our adolescent mental health assessment, allowing early psychological intervention to be provided to those affected. Key words: PTSD, adolescents, gender, lifetime trauma, prevalence, Malaysia