Family income in early childhood and subsequent attention deficit/hyperactivity disorder: a quasi-experimental study / Henrik LARSSON in Journal of Child Psychology and Psychiatry, 55-5 (May 2014)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 55-5 (May 2014) . - p.428-435 Titre : Family income in early childhood and subsequent attention deficit/hyperactivity disorder: a quasi-experimental study Type de document : texte imprimé Auteurs : Henrik LARSSON, Auteur ; Amir SARIASLAN, Auteur ; Niklas LANGSTROM, Auteur ; Brian M. D'ONOFRIO, Auteur ; Paul LICHTENSTEIN, Auteur Article en page(s) : p.428-435 Mots-clés : ADHD  family income  childhood  causality  quasi-experimental approaches Index. décimale : PER Périodiques Résumé : Background Studies have found negative associations between socioeconomic position and attention deficit/hyperactivity disorder (ADHD), but it remains unclear if this association is causal. The aim of this study was to determine the extent to which the association between family income in early childhood and subsequent ADHD depends on measured and unmeasured selection factors. Methods A total of 811,803 individuals born in Sweden between 1992 and 2000 were included in this nationwide population-based cohort study. Diagnosis of ADHD was assessed via the Swedish national Patient Register and the Swedish Prescribed Drug Register. Annual family income during offspring's first 5 years in life was collected prospectively from the Swedish Integrated Database for Labour Market Research and divided into quartiles by (lower) family disposable income. We predicted ADHD from family income while controlling for covariates and also comparing differently exposed cousins and siblings to control for unmeasured familial confounding. Results The crude analyses suggested that children exposed to lower income levels were at increased risk for ADHD (HRQuartile1 = 2.52; 95% CI, 2.42–2.63; HRQuartile2 = 1.52; 95% CI, 1.45–1.58; HRQuartile3 = 1.20; 95% CI, 1.14–1.15). This dose-dependent association decreased after adjustment for measured covariates (HRQuartile1 = 2.09; 95% CI, 2.00–2.19; HRQuartile2 = 1.36; 95% CI, 1.30–1.42; HRQuartile3 = 1.13; 95% CI, 1.08–1.18). Although the association was attenuated in cousin comparisons (HRQuartile1 = 1.61; 95% CI, 1.40–1.84; HRQuartile2 = 1.28; 95% CI, 1.12–1.45; HRQuartile3 = 1.14; 95% CI, 1.01–1.28) and sibling comparison models (HRQuartile1 = 1.37; 95% CI, 1.07–1.75; HRQuartile2 = 1.37; 95% CI, 1.12–1.68; HRQuartile3 = 1.23; 95% CI, 1.04–1.45), it remained statistically significant across all levels of decreased disposable family income. Conclusions Our results indicated that low family income in early childhood was associated with increased likelihood of ADHD. The link remained even after controlling for unmeasured selection factors, highlighting family income in early childhood as a marker of causal factors for ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12140 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=231 [article] Family income in early childhood and subsequent attention deficit/hyperactivity disorder: a quasi-experimental study [texte imprimé] / Henrik LARSSON, Auteur ; Amir SARIASLAN, Auteur ; Niklas LANGSTROM, Auteur ; Brian M. D'ONOFRIO, Auteur ; Paul LICHTENSTEIN, Auteur . - p.428-435. in Journal of Child Psychology and Psychiatry > 55-5 (May 2014) . - p.428-435 Mots-clés : ADHD  family income  childhood  causality  quasi-experimental approaches Index. décimale : PER Périodiques Résumé : Background Studies have found negative associations between socioeconomic position and attention deficit/hyperactivity disorder (ADHD), but it remains unclear if this association is causal. The aim of this study was to determine the extent to which the association between family income in early childhood and subsequent ADHD depends on measured and unmeasured selection factors. Methods A total of 811,803 individuals born in Sweden between 1992 and 2000 were included in this nationwide population-based cohort study. Diagnosis of ADHD was assessed via the Swedish national Patient Register and the Swedish Prescribed Drug Register. Annual family income during offspring's first 5 years in life was collected prospectively from the Swedish Integrated Database for Labour Market Research and divided into quartiles by (lower) family disposable income. We predicted ADHD from family income while controlling for covariates and also comparing differently exposed cousins and siblings to control for unmeasured familial confounding. Results The crude analyses suggested that children exposed to lower income levels were at increased risk for ADHD (HRQuartile1 = 2.52; 95% CI, 2.42–2.63; HRQuartile2 = 1.52; 95% CI, 1.45–1.58; HRQuartile3 = 1.20; 95% CI, 1.14–1.15). This dose-dependent association decreased after adjustment for measured covariates (HRQuartile1 = 2.09; 95% CI, 2.00–2.19; HRQuartile2 = 1.36; 95% CI, 1.30–1.42; HRQuartile3 = 1.13; 95% CI, 1.08–1.18). Although the association was attenuated in cousin comparisons (HRQuartile1 = 1.61; 95% CI, 1.40–1.84; HRQuartile2 = 1.28; 95% CI, 1.12–1.45; HRQuartile3 = 1.14; 95% CI, 1.01–1.28) and sibling comparison models (HRQuartile1 = 1.37; 95% CI, 1.07–1.75; HRQuartile2 = 1.37; 95% CI, 1.12–1.68; HRQuartile3 = 1.23; 95% CI, 1.04–1.45), it remained statistically significant across all levels of decreased disposable family income. Conclusions Our results indicated that low family income in early childhood was associated with increased likelihood of ADHD. The link remained even after controlling for unmeasured selection factors, highlighting family income in early childhood as a marker of causal factors for ADHD. En ligne : http://dx.doi.org/10.1111/jcpp.12140 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=231

Violent and sexual victimisation and incident anxiety, mood and substance use disorders in childhood and adolescence: a co-sibling study / Joonas PITKÄNEN in Journal of Child Psychology and Psychiatry, 67-8 (August 2026)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 67-8 (August 2026) . - p.1383-1392 Titre : Violent and sexual victimisation and incident anxiety, mood and substance use disorders in childhood and adolescence: a co-sibling study Type de document : texte imprimé Auteurs : Joonas PITKÄNEN, Auteur ; Amir SARIASLAN, Auteur ; Lauren BISHOP, Auteur ; Mikko AALTONEN, Auteur ; Laura MIELITYINEN, Auteur ; Taina LAAJASALO, Auteur ; Noora ELLONEN, Auteur ; Pekka MARTIKAINEN, Auteur Article en page(s) : p.1383-1392 Langues : Anglais (eng) Mots-clés : Violent victimisation  sexual victimisation  mood disorders  anxiety disorders  substance use disorders  sibling comparison Index. décimale : PER Périodiques Résumé : Background Studies on the association between victimisation in childhood and adolescence and psychiatric disorders increasingly acknowledge that these associations might be partly confounded by unmeasured familial factors. However, previous quasi-experimental evidence is largely based on retrospective self-reported data with potential response biases and small samples. Methods We measured psychiatric disorders and victimisation events from routinely collected administrative datasets on Finnish total birth cohorts 1996?2005. We identified all violent and sexual victimisation events using plaintiff information taken from registers containing data on crimes reported to the police between birth and the end of 2020. Incident anxiety, mood and substance use disorders were identified from registers containing records of inpatient and specialised outpatient psychiatric care. We compared all those exposed to victimisation to five population controls and their unexposed siblings, with the latter thereby adjusting for shared unobserved familial factors. We used stratified Cox regression models to estimate the associations between victimisation and the psychiatric disorders, with a follow-up from victimisation until the outcome, exit from the population or the end of 2020. Results Violent and sexual police-reported victimisation were both associated with an increased risk of psychiatric disorders, with adjusted hazard ratios ranging between 2.3 (95% Confidence Interval [CI]: 2.2, 2.4) for the association between violent victimisation and mood disorders and 3.9 (3.7, 4.1) for the association between sexual victimisation and anxiety disorders. In the sibling comparisons, the associations attenuated but remained clearly elevated, with the corresponding hazard ratios ranging between 1.9 (1.7, 2.1) and 2.6 (2.3, 2.9). Conclusions The results are consistent with a causal interpretation of the association between police-reported victimisation and psychiatric disorders. Mental health-related support after victimisation is an important task as it may prevent the onset of psychiatric disorders. Prevention of victimisation might decrease the number of psychiatric disorders in the population. En ligne : https://doi.org/10.1111/jcpp.70144 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=591 [article] Violent and sexual victimisation and incident anxiety, mood and substance use disorders in childhood and adolescence: a co-sibling study [texte imprimé] / Joonas PITKÄNEN, Auteur ; Amir SARIASLAN, Auteur ; Lauren BISHOP, Auteur ; Mikko AALTONEN, Auteur ; Laura MIELITYINEN, Auteur ; Taina LAAJASALO, Auteur ; Noora ELLONEN, Auteur ; Pekka MARTIKAINEN, Auteur . - p.1383-1392. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 67-8 (August 2026) . - p.1383-1392 Mots-clés : Violent victimisation  sexual victimisation  mood disorders  anxiety disorders  substance use disorders  sibling comparison Index. décimale : PER Périodiques Résumé : Background Studies on the association between victimisation in childhood and adolescence and psychiatric disorders increasingly acknowledge that these associations might be partly confounded by unmeasured familial factors. However, previous quasi-experimental evidence is largely based on retrospective self-reported data with potential response biases and small samples. Methods We measured psychiatric disorders and victimisation events from routinely collected administrative datasets on Finnish total birth cohorts 1996?2005. We identified all violent and sexual victimisation events using plaintiff information taken from registers containing data on crimes reported to the police between birth and the end of 2020. Incident anxiety, mood and substance use disorders were identified from registers containing records of inpatient and specialised outpatient psychiatric care. We compared all those exposed to victimisation to five population controls and their unexposed siblings, with the latter thereby adjusting for shared unobserved familial factors. We used stratified Cox regression models to estimate the associations between victimisation and the psychiatric disorders, with a follow-up from victimisation until the outcome, exit from the population or the end of 2020. Results Violent and sexual police-reported victimisation were both associated with an increased risk of psychiatric disorders, with adjusted hazard ratios ranging between 2.3 (95% Confidence Interval [CI]: 2.2, 2.4) for the association between violent victimisation and mood disorders and 3.9 (3.7, 4.1) for the association between sexual victimisation and anxiety disorders. In the sibling comparisons, the associations attenuated but remained clearly elevated, with the corresponding hazard ratios ranging between 1.9 (1.7, 2.1) and 2.6 (2.3, 2.9). Conclusions The results are consistent with a causal interpretation of the association between police-reported victimisation and psychiatric disorders. Mental health-related support after victimisation is an important task as it may prevent the onset of psychiatric disorders. Prevention of victimisation might decrease the number of psychiatric disorders in the population. En ligne : https://doi.org/10.1111/jcpp.70144 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=591

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