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Auteur Gemma HAMMERTON
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Documents disponibles écrits par cet auteur (3)
Faire une suggestion Affiner la rechercheChildhood trauma, adolescent risk behaviours and cardiovascular health indices in the 2004 Pelotas Birth Cohort / Megan BAILEY in Journal of Child Psychology and Psychiatry, 66-11 (November 2025)
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[article]
Titre : Childhood trauma, adolescent risk behaviours and cardiovascular health indices in the 2004 Pelotas Birth Cohort Type de document : texte imprimé Auteurs : Megan BAILEY, Auteur ; Graeme FAIRCHILD, Auteur ; Gemma HAMMERTON, Auteur ; Iná S. SANTOS, Auteur ; Luciana TOVO-RODRIGUES, Auteur ; Joseph MURRAY, Auteur ; Alicia MATIJASEVICH, Auteur ; Sarah L. HALLIGAN, Auteur Article en page(s) : p.1653-1663 Langues : Anglais (eng) Mots-clés : Childhood trauma adolescent substance use psychophysiology risk behaviours Index. décimale : PER Périodiques Résumé : Background Childhood trauma has been associated with increased risk of substance use and poor sleep, with these factors linked to subsequent poor cardiovascular health. However, there has been little longitudinal research exploring these associations in adolescence, especially in low- and middle-income countries (LMICs). To address this, we investigated longitudinal pathways from trauma to risk behaviours and cardiovascular health indices among adolescents in the 2004 Pelotas Birth Cohort, Brazil. Methods Lifetime cumulative trauma was assessed via caregiver reports up to age 11, and combined adolescent/caregiver reports at ages 15 and 18. At age 18, current problematic alcohol use, smoking, illicit drug use and sleep duration were measured via self-report and resting heart rate (HR) and blood pressure (BP) were assessed. We tested for trauma risk behaviour?HR/BP associations using multivariable regression, population attributable fractions and counterfactual mediation. Results Of 4,229 adolescents (51.9% boys), 81.9% were trauma-exposed by age 18. Cumulative trauma up to ages 15 and 18 increased the odds of age 18 alcohol, smoking and drug use (adjusted ORs: 1.25?1.44). Sleep duration was unrelated to childhood trauma. Population attributable fractions indicated that childhood trauma explained ≥28% of age 18 substance use. Unexpectedly, greater trauma exposure was associated with lower resting HR and BP. Substance use partially mediated the effect of trauma on cardiovascular health indices. Conclusions Trauma is associated with substance use in LMIC adolescents. Prevention and intervention strategies targeting trauma are critical given this significant burden. Our finding that trauma predicts lower HR/BP warrants further exploration given well-established associations between trauma and poorer cardiovascular health in adulthood. En ligne : https://doi.org/10.1111/jcpp.14173 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=570
in Journal of Child Psychology and Psychiatry > 66-11 (November 2025) . - p.1653-1663[article] Childhood trauma, adolescent risk behaviours and cardiovascular health indices in the 2004 Pelotas Birth Cohort [texte imprimé] / Megan BAILEY, Auteur ; Graeme FAIRCHILD, Auteur ; Gemma HAMMERTON, Auteur ; Iná S. SANTOS, Auteur ; Luciana TOVO-RODRIGUES, Auteur ; Joseph MURRAY, Auteur ; Alicia MATIJASEVICH, Auteur ; Sarah L. HALLIGAN, Auteur . - p.1653-1663.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 66-11 (November 2025) . - p.1653-1663
Mots-clés : Childhood trauma adolescent substance use psychophysiology risk behaviours Index. décimale : PER Périodiques Résumé : Background Childhood trauma has been associated with increased risk of substance use and poor sleep, with these factors linked to subsequent poor cardiovascular health. However, there has been little longitudinal research exploring these associations in adolescence, especially in low- and middle-income countries (LMICs). To address this, we investigated longitudinal pathways from trauma to risk behaviours and cardiovascular health indices among adolescents in the 2004 Pelotas Birth Cohort, Brazil. Methods Lifetime cumulative trauma was assessed via caregiver reports up to age 11, and combined adolescent/caregiver reports at ages 15 and 18. At age 18, current problematic alcohol use, smoking, illicit drug use and sleep duration were measured via self-report and resting heart rate (HR) and blood pressure (BP) were assessed. We tested for trauma risk behaviour?HR/BP associations using multivariable regression, population attributable fractions and counterfactual mediation. Results Of 4,229 adolescents (51.9% boys), 81.9% were trauma-exposed by age 18. Cumulative trauma up to ages 15 and 18 increased the odds of age 18 alcohol, smoking and drug use (adjusted ORs: 1.25?1.44). Sleep duration was unrelated to childhood trauma. Population attributable fractions indicated that childhood trauma explained ≥28% of age 18 substance use. Unexpectedly, greater trauma exposure was associated with lower resting HR and BP. Substance use partially mediated the effect of trauma on cardiovascular health indices. Conclusions Trauma is associated with substance use in LMIC adolescents. Prevention and intervention strategies targeting trauma are critical given this significant burden. Our finding that trauma predicts lower HR/BP warrants further exploration given well-established associations between trauma and poorer cardiovascular health in adulthood. En ligne : https://doi.org/10.1111/jcpp.14173 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=570 Emotional dysregulation in childhood and disordered eating and self-harm in adolescence: prospective associations and mediating pathways / Naomi WARNE in Journal of Child Psychology and Psychiatry, 64-5 (May 2023)
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Titre : Emotional dysregulation in childhood and disordered eating and self-harm in adolescence: prospective associations and mediating pathways Type de document : texte imprimé Auteurs : Naomi WARNE, Auteur ; Jon HERON, Auteur ; Becky MARS, Auteur ; Francesca SOLMI, Auteur ; Lucy BIDDLE, Auteur ; David GUNNELL, Auteur ; Gemma HAMMERTON, Auteur ; Paul MORAN, Auteur ; Marcus R. MUNAFO, Auteur ; Ian S. PENTON-VOAK, Auteur ; Andy SKINNER, Auteur ; Anne STEWART, Auteur ; Helen BOULD, Auteur Article en page(s) : p.797-806 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Background Emotional dysregulation may be a risk factor for disordered eating and self-harm in young people, but few prospective studies have assessed these associations long-term, or considered potential mediators. We examined prospective relationships between childhood emotional dysregulation and disordered eating and self-harm in adolescence; and social cognition, emotional recognition, and being bullied as mediators. Methods We analysed Avon Longitudinal Study of Parents and Children data on 3,453 males and 3,481 females. We examined associations between emotional dysregulation at 7 years and any disordered eating and any self-harm at 16 years with probit regression models. We also assessed whether social cognition (7 years), emotional recognition (8 years) and bullying victimisation (11 years) mediated these relationships. Results Emotional dysregulation at age 7 years was associated with disordered eating [fully adjusted probit B (95% CI) = 0.082 (0.029, 0.134)] and self-harm [fully adjusted probit B (95% CI) = 0.093 (0.036, 0.150)] at age 16 years. There was no evidence of sex interactions or difference in effects between self-harm and disordered eating. Mediation models found social cognition was a key pathway to disordered eating (females 51.2%; males 27.0% of total effect) and self-harm (females 15.7%; males 10.8% of total effect). Bullying victimisation was an important pathway to disordered eating (females 17.1%; males 10.0% of total effect), but only to self-harm in females (15.7% of total effect). Indirect effects were stronger for disordered eating than self-harm. Conclusions In males and females, emotional dysregulation in early childhood is associated with disordered eating and self-harm in adolescence and may be a useful target for prevention and treatment. Mediating pathways appeared to differ by sex and outcome, but social cognition was a key mediating pathway for both disordered eating and self-harm. En ligne : https://doi.org/10.1111/jcpp.13738 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501
in Journal of Child Psychology and Psychiatry > 64-5 (May 2023) . - p.797-806[article] Emotional dysregulation in childhood and disordered eating and self-harm in adolescence: prospective associations and mediating pathways [texte imprimé] / Naomi WARNE, Auteur ; Jon HERON, Auteur ; Becky MARS, Auteur ; Francesca SOLMI, Auteur ; Lucy BIDDLE, Auteur ; David GUNNELL, Auteur ; Gemma HAMMERTON, Auteur ; Paul MORAN, Auteur ; Marcus R. MUNAFO, Auteur ; Ian S. PENTON-VOAK, Auteur ; Andy SKINNER, Auteur ; Anne STEWART, Auteur ; Helen BOULD, Auteur . - p.797-806.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 64-5 (May 2023) . - p.797-806
Index. décimale : PER Périodiques Résumé : Background Emotional dysregulation may be a risk factor for disordered eating and self-harm in young people, but few prospective studies have assessed these associations long-term, or considered potential mediators. We examined prospective relationships between childhood emotional dysregulation and disordered eating and self-harm in adolescence; and social cognition, emotional recognition, and being bullied as mediators. Methods We analysed Avon Longitudinal Study of Parents and Children data on 3,453 males and 3,481 females. We examined associations between emotional dysregulation at 7 years and any disordered eating and any self-harm at 16 years with probit regression models. We also assessed whether social cognition (7 years), emotional recognition (8 years) and bullying victimisation (11 years) mediated these relationships. Results Emotional dysregulation at age 7 years was associated with disordered eating [fully adjusted probit B (95% CI) = 0.082 (0.029, 0.134)] and self-harm [fully adjusted probit B (95% CI) = 0.093 (0.036, 0.150)] at age 16 years. There was no evidence of sex interactions or difference in effects between self-harm and disordered eating. Mediation models found social cognition was a key pathway to disordered eating (females 51.2%; males 27.0% of total effect) and self-harm (females 15.7%; males 10.8% of total effect). Bullying victimisation was an important pathway to disordered eating (females 17.1%; males 10.0% of total effect), but only to self-harm in females (15.7% of total effect). Indirect effects were stronger for disordered eating than self-harm. Conclusions In males and females, emotional dysregulation in early childhood is associated with disordered eating and self-harm in adolescence and may be a useful target for prevention and treatment. Mediating pathways appeared to differ by sex and outcome, but social cognition was a key mediating pathway for both disordered eating and self-harm. En ligne : https://doi.org/10.1111/jcpp.13738 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501 Externalising pathways to alcohol-related problems in emerging adulthood / Gemma HAMMERTON in Journal of Child Psychology and Psychiatry, 61-6 (June 2020)
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Titre : Externalising pathways to alcohol-related problems in emerging adulthood Type de document : texte imprimé Auteurs : Gemma HAMMERTON, Auteur ; Alexis C. EDWARDS, Auteur ; Liam MAHEDY, Auteur ; Joseph MURRAY, Auteur ; Barbara MAUGHAN, Auteur ; Kenneth S. KENDLER, Auteur ; Matthew HICKMAN, Auteur ; Jon HERON, Auteur Article en page(s) : p.721-731 Langues : Anglais (eng) Mots-clés : Avon Longitudinal Study of Parents and Children alcohol-related problems conduct problems criminal behaviour mediation Index. décimale : PER Périodiques Résumé : BACKGROUND: Both 'early-onset persistent' and 'adolescent-onset' conduct problems (CPs) are associated with alcohol-related problems in emerging adulthood. The escalation of early CPs into criminal behaviour and heavy alcohol consumption prior to emerging adulthood are both likely to be important pathways. METHODS: Data were analysed from 3,038 young people in a UK birth cohort, the Avon Longitudinal Study of Parents and Children. The exposure was developmental trajectories of CPs ('low', 'childhood-limited', 'adolescent-onset' and 'early-onset persistent') between ages 4 and 13 years. The mediator was latent classes representing heavy alcohol consumption and/ or criminal behaviour at age 15 years. For the outcome, a quadratic latent growth curve was estimated to capture nonlinear change in alcohol-related problems between ages 18 and 23 years. RESULTS: Those with 'early-onset persistent' [b(95% CI) = 1.16 (0.17, 2.14)] and 'adolescent-onset' CPs [b(95% CI) = 1.31 (0.17, 2.45)] had higher levels of alcohol-related problems at age 18 years compared to those with 'low' CPs', but there was little evidence of an association with alcohol-related problems after age 19 years. There was evidence for an indirect effect of 'early-onset persistent' CPs [b(95% CI) = 1.12 (0.52, 1.72)] on alcohol-related problems at age 18 years via the latent classes of alcohol and criminal behaviour in adolescence. This was not found for 'adolescent-onset' CPs [b(95% CI) = 0.35 (-0.36, 1.07)]. CONCLUSIONS: Strong associations exist between early CPs, adolescent alcohol consumption and criminal behaviour and alcohol-related problems at age 18 years. Associations between early CPs and alcohol-related problems weakened considerably across emerging adulthood. En ligne : http://dx.doi.org/10.1111/jcpp.13167 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=426
in Journal of Child Psychology and Psychiatry > 61-6 (June 2020) . - p.721-731[article] Externalising pathways to alcohol-related problems in emerging adulthood [texte imprimé] / Gemma HAMMERTON, Auteur ; Alexis C. EDWARDS, Auteur ; Liam MAHEDY, Auteur ; Joseph MURRAY, Auteur ; Barbara MAUGHAN, Auteur ; Kenneth S. KENDLER, Auteur ; Matthew HICKMAN, Auteur ; Jon HERON, Auteur . - p.721-731.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 61-6 (June 2020) . - p.721-731
Mots-clés : Avon Longitudinal Study of Parents and Children alcohol-related problems conduct problems criminal behaviour mediation Index. décimale : PER Périodiques Résumé : BACKGROUND: Both 'early-onset persistent' and 'adolescent-onset' conduct problems (CPs) are associated with alcohol-related problems in emerging adulthood. The escalation of early CPs into criminal behaviour and heavy alcohol consumption prior to emerging adulthood are both likely to be important pathways. METHODS: Data were analysed from 3,038 young people in a UK birth cohort, the Avon Longitudinal Study of Parents and Children. The exposure was developmental trajectories of CPs ('low', 'childhood-limited', 'adolescent-onset' and 'early-onset persistent') between ages 4 and 13 years. The mediator was latent classes representing heavy alcohol consumption and/ or criminal behaviour at age 15 years. For the outcome, a quadratic latent growth curve was estimated to capture nonlinear change in alcohol-related problems between ages 18 and 23 years. RESULTS: Those with 'early-onset persistent' [b(95% CI) = 1.16 (0.17, 2.14)] and 'adolescent-onset' CPs [b(95% CI) = 1.31 (0.17, 2.45)] had higher levels of alcohol-related problems at age 18 years compared to those with 'low' CPs', but there was little evidence of an association with alcohol-related problems after age 19 years. There was evidence for an indirect effect of 'early-onset persistent' CPs [b(95% CI) = 1.12 (0.52, 1.72)] on alcohol-related problems at age 18 years via the latent classes of alcohol and criminal behaviour in adolescence. This was not found for 'adolescent-onset' CPs [b(95% CI) = 0.35 (-0.36, 1.07)]. CONCLUSIONS: Strong associations exist between early CPs, adolescent alcohol consumption and criminal behaviour and alcohol-related problems at age 18 years. Associations between early CPs and alcohol-related problems weakened considerably across emerging adulthood. En ligne : http://dx.doi.org/10.1111/jcpp.13167 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=426

