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Background: The Aggressive Student Culture Scale (ASCS) is a survey designed to measure the extent to which New Zealand (NZ) students experience aggressive behaviours within the school environment. The aim of this study is to assess the psychometric properties of the ASCS in the multidisciplinary Growing Up in NZ longitudinal study. Methods: We used data from 4938 children from the Growing Up in NZ study to examine the psychometric properties of ASCS for 8-year-old children. Confirmatory factor analysis was conducted, and measurement invariance was tested across sex, ethnicity, and deprivation levels. Results: The ASCS tool comprises a single latent factor: aggressive student behaviour. The ASCS provides an adequate and satisfactory measure for student aggression experiences. Full measurement invariance was supported for child's sex, but only configural invariance was confirmed across ethnicity and area-level deprivation. Males reported higher levels of aggressive experiences than females. Conclusions: The one-factor model structure offers an excellent fit to our data with good internal consistency. Comparisons across sex are valid; however, direct comparisons across ethnicity and deprivation levels should be approached with caution. We recommend replication studies and encourage further research involving participants from different age groups to better understand the factor structure across diverse demographic variables. [ABSTRACT FROM AUTHOR]

Aim: To examine the association between perinatal adversities and neurodevelopmental outcome in tuberous sclerosis complex (TSC). Method: The Tuberous Sclerosis 2000 study is a prospective, longitudinal UK study of TSC. In phase 1, mutation type, TSC family history, tuber characteristics, presence of cardiac rhabdomyomas, seizure characteristics, and intellectual ability were assessed in 125 children affected with TSC (64 females, 61 males; median age 39mo, range 4–254). In phase 2, 88 participants (49 females, 39 males; median age 148mo, range 93–323) were assessed for neurodevelopmental outcomes including intellectual ability, autism spectrum disorder, and attention‐deficit/hyperactivity disorder. Perinatal histories of 88 participants with TSC and 80 unaffected siblings were collected retrospectively using the Obstetric Enquiry Schedule and coded with a modified Gillberg Optimality Scale to measure levels of perinatal adversity. Data were analysed using Mann–Whitney U tests, Spearman's rank correlation, and linear regression with robust standard errors. Results: Children with familial TSC experienced significantly greater perinatal adversity than unaffected siblings. Perinatal adversity was higher in children with TSC‐affected mothers than those with unaffected mothers. There was no significant association between perinatal adversities and neurodevelopmental outcomes after controlling for confounders. Interpretation: Maternal TSC is a significant marker of elevated perinatal risk in addition to risks incurred by fetal genotype. Pregnancies complicated by maternal or fetal TSC require higher vigilance, and mechanisms underlying increased perinatal adversity require further research. What this paper adds: Higher perinatal adversity is associated with familial tuberous sclerosis complex (TSC).Maternal TSC was associated with higher frequencies of several perinatal risk markers.Paternal TSC was not associated with higher levels of perinatal adversity.Perinatal adversity levels in TSC1 and TSC2 subgroups did not differ significantly.Perinatal adversities were not associated with neurodevelopmental outcomes. What this paper adds: Higher perinatal adversity is associated with familial tuberous sclerosis complex (TSC).Maternal TSC was associated with higher frequencies of several perinatal risk markers.Paternal TSC was not associated with higher levels of perinatal adversity.Perinatal adversity levels in TSC1 and TSC2 subgroups did not differ significantly.Perinatal adversities were not associated with neurodevelopmental outcomes. This original article is commented on by Franz on pages 1184–1185 of this issue. [ABSTRACT FROM AUTHOR]

Background/aims: Self-reported questionnaires on health status after randomized trials can be time-consuming, costly, and potentially unreliable. Administrative data sets may provide cost-effective, less biased information, but it is uncertain how administrative and self-reported data compare to identify chronic conditions in a New Zealand cohort. This study aimed to determine whether record linkage could replace self-reported questionnaires to identify chronic conditions that were the outcomes of interest for trial follow-up., Methods: Participants in 50-year follow-up of a randomized trial were asked to complete a questionnaire and to consent to accessing administrative data. The proportion of participants with diabetes, pre-diabetes, hyperlipidaemia, hypertension, mental health disorders, and asthma was calculated using each data source and agreement between data sources assessed., Results: Participants were aged 49 years (SD = 1, n  = 424, 50% male). Agreement between questionnaire and administrative data was slight for pre-diabetes (kappa = 0.10), fair for hyperlipidaemia (kappa = 0.27), substantial for diabetes (kappa = 0.65), and moderate for other conditions (all kappa >0.42). Administrative data alone identified two to three times more cases than the questionnaire for all outcomes except hypertension and mental health disorders, where the questionnaire alone identified one to two times more cases than administrative data. Combining all sources increased case detection for all outcomes., Conclusions: A combination of questionnaire, pharmaceutical, and laboratory data with expert panel review were required to identify participants with chronic conditions of interest in this follow-up of a clinical trial., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Aim: Approaches to understanding child injury tend to focus on short-term proximal influences. Previous analyses have found higher rates of injury among Māori and Pacific children in Aotearoa New Zealand (NZ). This study aimed to investigate how combinations of situations and multiple events act across the life-course to either protect preschool children from, or place them at risk of, repeated injuries requiring medical attention., Methods: Longitudinal data were used to identify parent-reported injuries requiring medical attention among 6114 preschool NZ children. The environments experienced by children with multiple and/or severe injury were explored using multivariable analyses., Results: Eight percent of children (n=505) experienced 1-3 injuries with at least one hospitalisation or ≥4 injuries ( high injury group) from birth to 4.5 years of age. After accounting for antenatal, sociodemographic and psychosocial variables, children of Māori mothers (OR=0.7, 95% CI 0.5 to 0.97) and children of Asian mothers (OR=0.5, 95% CI 0.3 to 0.7) were less likely to be in the high injury group than children of European mothers. After adjusting for maternal ethnicity and child variables (gender, temperament, level of activity and behaviour difficulties), cumulative exposure to factors in four domains was associated with injury category: maternal, family, social and service use., Conclusion: This study identified social and economic opportunities to lower rates of injury among preschool children, that might reduce associated direct and indirect costs. Our findings in relation to ethnicity go against the standard public rhetoric and provide support for shifting the apportioning of blame for child injury from individuals to wider environmental exposures for which public health and societal solutions are required., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. No commercial re-use. See rights and permissions. Published by BMJ.)