Attention control in preterm and term 5-month-old infants: Cross-task stability increases with gestational age

Cross-task stability refers to performance consistency across different settings and measures of the same construct. Cross-task stability can help us understand developmental processes, including how risks such as preterm birth affect outcomes. We investigated cross-task stability of attention control in 32 preterm and 39 term infants. All infants had the same chronological age at time of testing (5 months) but varied in gestational age (GA) at birth (30-42 weeks). Infants completed an experimental attention following task with a researcher and a naturalistic play observation with their mothers. Both preterm and term infants demonstrated attention following in the experimental task. GA and flexibility of attention were related: the likelihood of no turn trials decreased with increasing GA. To evaluate cross-task stability, we compared attention performance in the experimental and naturalistic settings. Flexible attention shifts on the experimental task were positively related to attention to objects in the naturalistic observation. Furthermore, the association between flexible attention shifts on the experimental task and attention to objects in the naturalistic observation was moderated by GA. Our study provides initial evidence that the consolidation of attention control increases with GA. These findings highlight the value of comparing experimental and observational measures of attention.

Comparing the screening methods for gestational diabetes mellitus before and during the COVID-19 pandemic: A systematic review

BACKGROUND

The oral glucose tolerance test (OGTT) is the gold standard for detecting gestational diabetes mellitus (GDM). However, during the COVID-19 pandemic, screening practices were reevaluated due to the risk of infection associated with the prolonged hospital visit required for the OGTT. Some countries have published novel screening protocols for GDM, suggesting the utilization of hemoglobin A1c (HbA1c), random plasma glucose (RPG), or fasting plasma glucose (FPG) in favor of OGTTs during the pandemic. Therefore, differences in screening methods before and after the epidemic need to be examined.

METHODS

A systematic search was carried out across five electronic databases (Cinahl, Medline, Embase, Pubmed, and Web of Science) between 2016 and 2023. The Critical Appraisal Skills Programme (CASP) checklist for cohort studies was used to evaluate the quality of included papers.

RESULTS

A total of 13 eligible studies were included. Prior to the COVID-19 pandemic, the OGTT was the recommended measure to screen GDM, internationally based on various official guidelines. During the pandemic, it was recommended that HbA1c or FPG, or RPG be used as a substitute for OGTTs. However, the new methods have low sensitivity, may not reflect accurately the prevalence of GDM, and may lead to many false-negative results in women and to adverse pregnancy and neonatal outcomes.

CONCLUSION

The new screening methods for GDM have poor accuracy and a high risk of adverse pregnancy outcomes. Comparatively, targeted screening tests to detect GDM according to the risk level are more effective in an emergency. In the future, the alternatives to OGTTs still need to be further explored in more depth.

Prevalence, Clinical Features, Neuroimaging, and Genetic Findings in Children With Ataxic Cerebral Palsy in Europe

BACKGROUND AND OBJECTIVES

To report on prevalence, associated impairments, severity, and neuroimaging findings in children with ataxic cerebral palsy (CP).

METHODS

In children coded as having ataxic CP in the Central database of Joint Research Center-Surveillance of Cerebral Palsy in Europe (JRC-SCPE) and born during 1980-2010, birth characteristics, severity profiles including associated impairments, neuroimaging patterns, and the presence of syndromes were analyzed. Definitions were according to validated SCPE guidelines. Prevalence over time was estimated using Poisson regression.

RESULTS

In total, 679 children with ataxic CP were identified in 20 European CP registers. The proportion with ataxic CP was 3.8% and varied from 0% to 12.9%. Prevalence over time showed no significant trend. Approximately 70% of children with ataxic CP were able to walk, and 40% had severe intellectual impairment and a high impairment index. Children with ataxic CP were mostly born at term (79%) and with normal birth weight (77%). Neuroimaging patterns revealed normal findings in 29%, brain maldevelopments in 28.5%, miscellaneous findings in 23.5%, and brain injuries in 19%, according to the SCPE classification. Genetic syndromes were described in 9%.

DISCUSSION

This register-based multicenter study on children with ataxic CP provides a large sample size for the analysis of prevalence, severity, and origin of this rare CP subtype. Even with strict inclusion and classification criteria, there is variation between registers on how to deal with this subtype, and diagnosis of ataxic CP remains a challenge. Ataxic cerebral palsy differs from other CP subtypes: children with ataxic CP have a disability profile that is more pronounced in terms of cognitive than gross motor dysfunction. They are mostly term born and the origin rarely suggests acquired injuries. In addition to neuroimaging, a comprehensive genetic workup is particularly recommended for children with this CP type.

Longitudinal health behaviour patterns among adults aged ≥50 years in China and their associations with trajectories of depressive symptoms

OBJECTIVES

Against the background of the growing recognition of the need for a holistic perspective on health behaviour, we aim to identify longitudinal patterns of multiple health behaviours, and to assess associations of such patterns with depressive symptoms among older people in China.

METHODS

Using three waves of China Health and Retirement Longitudinal Study data (n = 8439), we performed latent class growth analyses (LCGAs) to identify longitudinal patterns of multiple health behaviours. Random-effects models were estimated to assess associations between health behaviour patterns and depressive symptoms.

RESULTS

The best fitting LCGA model had seven classes: (1) connected active non-smokers (average posterior probability: 21.8%), (2) isolated active non-smokers (24.7%), (3) isolated inactive non-smokers (17.0%), (4) isolated active smokers (14.5%), (5) connected active smokers (12.2%), (6) increasingly connected and active non-smokers (5.4%), and (7) moderately connected inactive smokers (4.4%). Depressive symptoms were highest in the four classes with lower probabilities of social participation across waves. No evidence was found of change over time in depressive symptomatology gaps between people with different health behaviour trajectories.

CONCLUSION

Health behaviour patterns characterized by consistently low social participation were associated with raised depressive symptomatology, suggesting that focusing on social participation may benefit later-life mental health promotion strategies.

Validation of the family focused mental health practice questionnaire in measuring health and social care professionals' family focused practice

BACKGROUND

Parental mental illness is a major public health issue and there is growing evidence that family focused practice can improve outcomes for parents and their families. However, few reliable and valid instruments measure mental health and social care professionals' family focused practice.

OBJECTIVES

To explore the psychometric properties of the Family Focused Mental Health Practice Questionnaire in a population of health and social care professionals.

METHODS

Health and Social Care Professionals (n = 836) in Northern Ireland completed an adapted version of the Family Focused Mental Health Practice Questionnaire. Exploratory factor analysis was used to test the structure of the underlying dimensions in the questionnaire. The results, and theoretical considerations, guided construction of a model that could explain variation in respondents' items. This model was then validated using confirmatory factor analysis.

RESULTS

Exploratory factor analysis revealed that solutions including 12 to 16 factors provided a good fit to the data and indicated underlying factors that could be meaningfully interpreted in line with existing literature. From these exploratory analyses, we derived a model that included 14 factors and tested this model with Confirmatory Factor Analysis. The results suggested 12 factors that summarized 46 items that were most optimal in reflecting family focused behaviours and professional and organizational factors. The 12 dimensions identified were meaningful and consistent with substantive theories: furthermore, their inter-correlations were consistent with known professional and organizational processes known to promote or hinder family focused practice.

CONCLUSION

This psychometric evaluation reveals that the scale provides a meaningful measure of professionals' family focused practice within adult mental health and children's services, and the factors that hinder and enable practice in this area. The findings, therefore, support the use of this measure to benchmark and further develop family focused practice in both adult mental health and children's services.

Perceived treatment of respectful maternity care among pregnant women at healthcare facilities in the Kingdom of Saudi Arabia: A cross-sectional study

BACKGROUND

Mistreatment of women during childbirth is a global issue and a violation of fundamental human rights. Respectful maternity care has been affirmed as a universal right of childbearing women. However, little is known about the level of respect experienced by women in the Kingdom of Saudi Arabia (KSA); which is undergoing key reforms in the scope of its healthcare provision. We explored the occurrence of respect perceived by women giving birth in the KSA and compared results between national healthcare sectors, as well as with previous international studies.

METHOD

We conducted a cross-sectional study using an online survey. The online questionnaire included demographic questions, a translation of the internationally validated Mother on Respect index (MORi) scale, which we adapted to investigate KSA women's experiences, and questions to further investigate women's experiences (e.g. respect of privacy). Women who gave birth within five years at a Saudi healthcare facility were recruited through social media using a snowballing approach.

RESULTS

Overall, 586 participants were recruited, 54% of whom had been cared for in government hospitals, 65% were aged between 25 and 34, and almost 79% had a BSc or higher qualification. Overall, women's perception about respectful maternity care was positive, however, opinions varied between governmental and private sectors. Women cared for in the government sector reported significantly lower levels of respect compared to those cared for in the private sector (β = -.132, p = .001). The results also highlighted an issue of concern: one in five women (21.8%) reported having been physically abused. Our participants perceived their childbirth experiences to be less respectful compared to those in other high-income countries.

CONCLUSION

Women birthing in the private sector reported a more respectful experience, which may be explained by the private sector being more consumer-focused. Women who gave birth in the KSA perceived their care to be less respectful than women giving birth in Canada and the USA. Beginning to understand what has provoked the occurrences of mistreatment in childbirth worldwide will inevitably contribute to the development of a solution. Respectful maternity care should be focused on providing women-centred care and quality of care which meets the WHO vision for women's and their families' needs being fulfilled and respected.

Linkage of Routinely-Collected Maternity Data with a Cerebral Palsy Register: Matching Success and Temporal Assessment of Data Quality and Maternal Characteristics

ObjectivesThis study aimed to 1) establish the success rate of matching offspring in the Northern Ireland Cerebral Palsy Register (NICPR) to mother-infant pairs within the Northern Ireland Maternity System (NIMATS); and explore changes in 2) quality of maternal data (NIMATS) and 3) maternal characteristics over the study period. ApproachData for individuals with cerebral palsy (CP) born between 1990 (commencement of NIMATS) and 2012 (latest fully validated birth year in NICPR) were transferred to the Honest Broker Service, who performed data linkage.  Offspring were primarily matched between NICPR and NIMATS using the unique Health and Care Number (HCN).  Where this was unavailable in NIMATS, matching from offspring to mothers/pregnancies was performed using surname, gender, date of birth +/- postcode.  Changes in completeness and quality of data and maternal characteristics were explored per year and visualised using histograms.  All pre-processing and analyses were performed using R. ResultsFrom 1263 included CP cases, 377(30%) were matched using HCN.  A further 121(9%) were matched by secondary strategies.  Substantial improvements in completeness of maternal data were observed over time (body mass index (46.2% to 97.7%); BP (44.8% to 95.3%); age 100% complete throughout).  An apparent tendency to round systolic and diastolic blood pressure to the nearest ten was observed.  This tendency decreased over time which potentially led to an overestimation of hypertension detected in earlier years.  Characteristics of mothers also changed over the study duration, seen in increasing proportions with BMI≥30 kg/m2 (9.97% to 18.9%). Age of mothers also increased with decreasing proportions aged<25y (33.7% to 19.6%) and increasing proportions aged≥35y (9.7% to 20.4%).  No change over time was observed in maternal blood pressure variables. ConclusionMatching success was affected by incomplete NIMATS coverage in earlier years and lag time in CP diagnosis being confirmed by NICPR (typically beyond the age of 4 years).  Over time, completeness and quality of maternal variables in NIMATS has improved meaning future studies using these linkages will be more reliable.

Linkage of Routinely-Collected Maternity Data with a Cerebral Palsy Register: Comparison of baseline maternal characteristics in offspring with and without cerebral palsy

ObjectivesThis feasibility and hypothesis generating study aimed to compare maternal characteristics between pregnancies in which at least one infant received a diagnosis of CP (case pregnancies) and pregnancies in which all infants did not receive a diagnosis (control pregnancies). ApproachData for individuals with cerebral palsy (CP) born between 1990 (commencement of Northern Ireland Maternity System (NIMATS)) and 2012 (latest fully validated birth year in Northern Ireland Cerebral Palsy Register (NICPR)) were transferred to the Honest Broker Service, who performed linkage to NIMATS.  Offspring were primarily matched between NICPR and NIMATS using the unique Health and Care Number. Where this was unavailable in NIMATS, matching from offspring to mother-infant pairs was performed using surname, gender, date of birth and/or postcode.  Chi-square tests were used to test for differences in maternal characteristics between case and control pregnancies. ResultsCohorts consisted of 486 case and 266,260 control pregnancies.  After missing values were removed, case pregnancies had a greater proportion of mothers under 25 years (case: 28.0% vs control: 23.1%, p<0.05), multiple births (7.8% vs 1.5%, p<0.001), nulliparous mothers (47.5% vs 41.1%, p<0.05), unplanned pregnancies (42.8% vs 34.4%, p<0.001), late booking appointments (14.0% vs 9.7%, p<0.01), hypertension during pregnancy (11.9% vs 8.5%, p<0.05), no recorded folic acid intake (46.7% vs 34.8% p<0.001), family history of congenital abnormality (33.3% vs 24.4%, p<0.001), medical problems with potential to affect labour (respiratory, cardiac, diabetes, other) (6.6% vs 3.9%, p=0.004).  A non-significant trend was observed suggesting that case pregnancies had a higher proportion of mothers with BMI≥30kg/m2 (21.4% vs 13.2%, p=0.086). ConclusionThis feasibility study has highlighted a range of potential maternal characteristics that may be associated with a diagnosis of cerebral palsy in offspring and mirrors findings from other studies.  A future data extraction update and predictive model development is planned.

Risk factors for intellectual disability in children with spastic cerebral palsy

BACKGROUND

Cerebral palsy (CP) is a non-progressive disorder of posture and movement caused by prenatal or perinatal lesions of the brain. Children with CP are also at increased risk of other disabilities, for example, intellectual disability. Previous studies suggest the risk of intellectual disability varies in complex ways according to the type of motor impairment and perinatal factors such as gestational age.

OBJECTIVE

To determine the patterns of risk of intellectual disability in children with spastic CP.

DESIGN

Cross-sectional, population-based study using the Northern Ireland Cerebral Palsy Register.

PARTICIPANTS

Persons born in 1981-2008 with congenital bilateral or unilateral spastic CP (N=1452).

OUTCOME MEASURE

The outcome measure was severe intellectual disability (IQ <50), as reported by clinicians known to the child. Data pertaining to CP subtype, sex, gestational age, birth weight and functional level were included in analyses.

RESULTS

Severe intellectual disability was significantly more prevalent in children with bilateral spastic CP (BSCP) compared with children with unilateral spastic CP (χ² (2)=162.60, p<0.001). Compared with very preterm infants with BSCP, the risk of intellectual disability increased in moderately preterm (OR=3.97, 95% CI 1.04 to 15.23) and at-term (OR=2.51, 95% CI 1.16 to 5.44) children with BSCP.

CONCLUSIONS

Children with BSCP are at increased risk of intellectual disability, with those born at term at the highest risk. The findings highlight the importance of early screening, particularly for children with BSCP born at term.

Data linkage and pain medication in people with cerebral palsy: a cross-sectional study

AIM

To explore data linkage and pain medication as a proxy for pain, to assess differences in pain medication between the cerebral palsy (CP) and the general populations, and to identify factors associated with pain medication in CP.

METHOD

This cross-sectional study linked the Northern Ireland CP Register and two administrative health care databases for people resident in Northern Ireland born between 1981 and 2008. Pain medication as a proxy was validated by replicating analyses from the Study of Participation of Children with Cerebral Palsy Living in Europe (SPARCLE) studies. Logistic regression compared pain medication in the CP and general populations. Multi-level regression models assessed factors associated with pain medication in the CP cohort.

RESULTS

The sample size was 701 075, of whom 1430 (0.2%) were people with CP. There were 358 969 males and 340 677 females in the general population, and 810 males and 620 females in the CP population, with an age range of 4 to 31 years in both groups. The validation exercise produced results similar to the SPARCLE studies. More people with CP received pain medication (61% vs 50.9%) and had twice the odds of being prescribed opioid analgesics (odds ratio [OR]=2.81, 95% confidence interval [CI] 2.32-3.40). Among those with CP, the odds of being prescribed pain medication were higher for: females (OR=1.34, 95% CI 1.06-1.70), younger age (OR=1.60, 95% CI 1.02-2.51), Gross Motor Function Classification System level V (OR=2.60, 95% CI 1.52-4.47), seizures (OR=2.55, 95% CI 1.68-3.87), and higher deprivation score (OR=2.06, 95% CI 1.41-3.24).

INTERPRETATION

Pain medication is an effective proxy for pain. More people with CP were prescribed pain medication than the general population. Pain medication for people with CP is not only dependent on physiological and clinical characteristics, but also environmental factors. What this paper adds Data linkage using pain medication as a proxy for experiencing pain is a valid method. People with cerebral palsy (CP) are more likely to experience pain than the general population. People with CP have over twice the odds of receiving opioids compared to the general population. The odds of being prescribed pain medication were higher for females with CP. Prescription of pain medication among those with CP is not only dependent on clinical characteristics, but also environmental factors.

Complex childhood trauma, gender and depression: Patterns and correlates of help-seeking and maladaptive coping

BACKGROUND

Little is known about access to treatment or maladaptive coping amongst those with a history of childhood trauma and subsequent depressive disorder, which is often complicated by post traumatic stress disorder (PTSD).

AIMS

To (1) identify profiles of complex childhood trauma amongst men and women with major depression, (2) examine patterns of service access and treatment or maladaptive coping (drug misuse, alcohol abuse or suicidality), and (3) associations with socio-economic/demographic characteristics, comorbid PTSD, anxiety/mood disorders and perceived social support.

METHOD

Analysis of Wave 3 of the national epidemiologic survey on alcohol and related conditions (NESARC) (2012-2013). We use the Latent Class Analysis 3-step approach in Mplus to examine individual differences in childhood experiences and coping behaviour. We examined both (a) the inter-relationship of this patterning, and (b) the extent to which proactive and maladaptive coping are associated with socio-economic/demographic characteristics, comorbid PTSD, anxiety disorders and perceived social support.

RESULTS

a diagnosis of Major Depression was recorded for 7432 people, two thirds of whom reported a history of complex childhood trauma. Maladaptive coping is associated with the most severe trauma groups, comorbid PTSD, dysthymia, and anxiety disorders.

CONCLUSION

Given the evidence of the current study, suggesting a poorer treatment course for depression in adults with complex childhood trauma, early screening for a trauma history will facilitate preventive efforts before onset of depression, possibly mitigating a poorer treatment course.

Prosocial and Aggressive Behavior: A Longitudinal Study

Developmental theorists have made strong claims about the fundamental prosocial or aggressive nature of the human infant. However, only rarely have prosocial behavior and aggression been studied together in the same sample. We charted the parallel development of both behaviors from infancy to childhood in a British community sample, using a two-construct, multimethod longitudinal design. Data were drawn from the Cardiff Child Development Study (CCDS), a prospective longitudinal study of a volunteer sample of parents and their firstborn children. A sample of 332 mothers was recruited from National Health Service (NHS) prenatal clinics and general practice clinics in Wales, UK, between Fall of 2005 and Summer of 2007. Potential participants represented the full range of sociodemographic classifications of neighborhoods. Participating families were divided about equally between middle- and working-class families, were somewhat more likely to have sons than daughters, and the majority (90%) were in a stable partnership. In response to standard categories recommended for use in Wales at the time, the majority (93%) of mothers reported themselves as Welsh, Scottish, English, or Irish; most others named a European or South Asian nationality. Of the 332 families agreeing to participate, 321 mothers (Mage  = 28 years) and 285 partners (Mage  = 31 years) were interviewed during the pregnancy and 321 of the families contributed data at least once after the child's birth. After an initial home visit at 6 months, data collection occurred in four additional waves of testing when children's mean ages were approximately 1, 1.5, 2.5, and 7 years. Data collection alternated between family homes and Cardiff University. Of those families seen after the child's birth, 89% were assessed at the final wave of testing. Data collection ended in 2015. Methods included direct observation, experimental tasks, and collection of reports from mothers, fathers, other relatives or family friends, and classroom teachers. Interactions with a familiar peer were observed at 1.5 years. Interactions with unfamiliar peers took place during experimental birthday parties at 1 and 2.5 years. At 7 years, parents were interviewed, parents and teachers completed questionnaires, and the children engaged in cognitive and social decision-making tasks. Based on reports from parents and other informants who knew the children well, individual differences in both prosocial behavior and aggression were evident in children. Both types of behavior showed stability across the second and third years. The association between prosocial behavior and aggression changed over time: at 1.5 years, they were not significantly related (the association approached zero), but they became negatively correlated by 3 years. Different patterns were seen when children played with familiar versus unfamiliar peers. At 1.5 years, when children were observed at home with a familiar peer, prosocial behavior and aggression were unrelated, thus showing a pattern of results like that seen in the analysis of informants' reports. However, a different pattern emerged during the experimental birthday parties with unfamiliar peers: prosocial behavior and aggression were positively correlated at both 1 and 2.5 years, contributing to a general sociability factor at both ages. Gender differences in prosocial behavior were evident in informants' reports and were also evident at the 1-year (though not the 2.5-year) birthday parties. In contrast, gender differences in both prosocial behavior and aggression were evident by 7 years, both in children's aggressive decision-making and in their parents' and teachers' reports of children's aggressive behavior at home and school. By age 7, children's aggressive decision-making and behavior were inversely associated with their verbal skills, working memory, and emotional understanding. Some children had developed aggressive behavioral problems and callous-unemotional traits. A few (12%) met diagnostic criteria for conduct disorder or oppositional-defiant disorders, which had been predicted by early angry aggressiveness and lack of empathy for other people. Taken together, the findings revealed a gradual disaggregation of two ways in which children interact with other people. Individual differences in both prosocial behavior and aggression revealed continuity over time, with gender differences emerging first in prosocial behavior, then in aggression. Restrictions in the participant sample and the catchment area (e.g., all were first-time parents; all were drawn from a single region in the United Kingdom) mean that it is not possible to generalize findings broadly. It will be important to expand the study of prosocial behavior and aggression in other family and environmental contexts in future work. Learning more about early appearing individual differences in children's approaches to the social world may be useful for both educational and clinical practice.

Cerebral palsy in twins and higher multiple births: a Europe-Australia population-based study

AIM

To describe the birth prevalence, temporal trends, and clinical outcomes of twins, triplets, or quadruplets with cerebral palsy (CP).

METHOD

This was a cross-sectional study using data for twins, triplets, and quadruplets with prenatally or perinatally acquired CP and pooled from the Surveillance of Cerebral Palsy in Europe network (born 1992-2009) and Australian Cerebral Palsy Register (born 1993-2009). Children were at least 4 years old at time of registration. Children born in regions with population ascertainment and available denominator data were included in prevalence calculations (n=1033 twins, 81 triplets, and 11 quadruplets). Clinical data from children registered in all participating registers were described, including 2163 twins (56% male), 187 triplets (59% male), and 20 quadruplets (45% male).

RESULTS

The birth prevalence of CP was higher with increasing plurality (twins 6.5 per 1000 live births [95% confidence interval {CI} 6.1-6.9], triplets 17.1 [95% CI 13.6-21.2], quadruplets 50.7 [95% CI 25.6-88.9]); however, prevalence by gestational age was similar across all pluralities. Between 1992-1994 and 2007-2009, prevalence of CP among twins declined (p=0.001) but prevalence of CP among triplets did not change significantly over time (p=0.55). The distributions of Gross Motor Function Classification System, epilepsy, and impairments of intellect, vision, and hearing were similar regardless of plurality.

INTERPRETATION

The data combined from two CP register networks indicated that triplets and quadruplets had increased risk of CP compared to twins. The higher prevalence of CP in triplets and quadruplets is due to their higher risk of preterm birth. Prevalence of CP among twins significantly declined in Europe and Australia. Clinical outcomes were similar for all multiple births.

Trends in Prevalence and Severity of Pre/Perinatal Cerebral Palsy Among Children Born Preterm From 2004 to 2010: A SCPE Collaboration Study

Aim: To report on prevalence of cerebral palsy (CP), severity rates, and types of brain lesions in children born preterm 2004 to 2010 by gestational age groups.

Methods: Data from 12 population-based registries of the Surveillance of Cerebral Palsy in Europe network were used. Children with CP were eligible if they were born preterm (<37 weeks of gestational age) between 2004 and 2010, and were at least 4 years at time of registration. Severity was assessed using the impairment index. The findings of postnatal brain imaging were classified according to the predominant pathogenic pattern. Prevalences were estimated per 1,000 live births with exact 95% confidence intervals within each stratum of gestational age: ≤27, 28–31, 32–36 weeks. Time trends of both overall prevalence and prevalence of severe CP were investigated using multilevel negative binomial regression models.

Results: The sample comprised 2,273 children. 25.8% were born from multiple pregnancies. About 2-thirds had a bilateral spastic CP. 43.5% of children born ≤27 weeks had a high impairment index compared to 37.0 and 38.5% in the two other groups. Overall prevalence significantly decreased (incidence rate ratio per year: 0.96 [0.92–1.00[) in children born 32–36 weeks. We showed a decrease until 2009 for children born 28–31 weeks but an increase in 2010 again, and a steady prevalence (incidence rate ratio per year = 0.97 [0.92–1.02] for those born ≤27 weeks. The prevalence of the most severely affected children with CP revealed a similar but not significant trend to the overall prevalence in the corresponding GA groups. Predominant white matter injuries were more frequent in children born <32 weeks: 81.5% (≤27 weeks) and 86.4% (28–31 weeks), compared to 63.6% for children born 32–36 weeks.

Conclusion: Prevalence of CP in preterm born children continues to decrease in Europe excepting the extremely immature children, with the most severely affected children showing a similar trend.

Very preterm infants engage in an intervention to train their control of attention: results from the feasibility study of the Attention Control Training (ACT) randomised trial

Background

Very premature birth (gestational age between 28 and 31 + 6 weeks) is associated with increased risk of cognitive delay and attention deficit disorder, which have been linked to anomalies in the development of executive functions (EFs) and their precursors. In particular, very preterm (VP) infants display anomalies in controlling attention and gathering task-relevant information. Early interventions that support attention control may be pivotal in providing a secure base for VP children’s later attainments. The Attention Control Training (ACT) is a cognitive training intervention that targets infants’ abilities to select visual information according to varying task demands but had not been tested in VP infants. We conducted a feasibility study to test the processes we intend to use in a trial delivering the ACT to VP infants.

Methods and design

We tested recruitment and retention of VP infants and their families in a randomised trial, as well as acceptability and completion of baseline and outcome measures. To evaluate these aims, we used descriptive quantitative statistics and qualitative methods to analyse feedback from infants’ caregivers. We also investigated the quality of eye-tracking data collected and indicators of infants’ engagement in the training, using descriptive statistics.

Results

Twelve VP infants were recruited, and 10 (83%) completed the study. Participants’ parents had high education attainment. The rate of completion of baseline and outcome measures was optimal. VP infants demonstrated engagement in the training, completing on average 84 min of training over three visits, and displaying improved performance during this training. Eye-tracking data quality was moderate, but this did not interfere with infants’ engagement in the training.

Discussion

The results suggest the ACT can be delivered to VP infants. However, challenges remain in recruitment of numerous and diverse samples. We discuss strategies to overcome these challenges informed by results of this study.

Trial registration

Registered Registration ID: NCT03896490. Retrospectively registered at Clinical Trials Protocol Registration and Results System (clinicaltrials.gov).

Supplementary Information

The online version contains supplementary material available at 10.1186/s40814-021-00809-z.

Decreasing cerebral palsy prevalence in multiple births in the modern era: a population cohort study of European data

Multiple births (twins or higher order multiples) are increasing in developed countries and may present higher risk for cerebral palsy (CP). However, few studies can reliably investigate trends over time because these outcomes are relatively rare.

OBJECTIVE

We pooled data from European CP registers to investigate CP birth prevalence and its trends among single and multiple births born between 1990 and 2008.

DESIGN

Population cohort study.

SETTING

12 population-based registers from the Surveillance of Cerebral Palsy in Europe collaboration.

PARTICIPANTS

4 446 125 single and multiple live births, of whom 8416 (0.19%) had CP of prenatal or perinatal origin.

MAIN OUTCOMES

CP diagnosis ascertained in childhood using harmonised methods; CP subtype; Motor impairment severity among CP cases.

RESULTS

The rate of multiple births increased from 1990. Multiples displayed higher risk for CP (RR=4.27, 95% CI 4.00 to 4.57). For singletons and multiples alike, risk for CP was higher among births of lower gestational age (GA) or birth weight (BW). However, CP birth prevalence declined significantly among very preterm (<32 weeks) and very low BW (<1500 g) multiples. Singletons and multiples with CP displayed similar severity of motor impairment.

CONCLUSIONS

Between 1990 and 2008, CP birth prevalence decreased steadily among multiples with low GA or BW. Furthermore, multiples with CP display similar profiles of severe motor impairment compared with CP singletons. Improvements in management of preterm birth since the 1990s may also have been responsible for providing better prospects for multiples.

Population-based study on the prevalence and clinical profile of adults with cerebral palsy in Northern Ireland

OBJECTIVES

This study aimed to report the prevalence and clinical characteristics of adults with cerebral palsy (CP) in a geographically defined region of the UK.

DESIGN AND SETTING

Cross-sectional study using the Northern Ireland Cerebral Palsy Register (NICPR).

PARTICIPANTS

All validated cases known to the NICPR, born 1981-2001 and alive and resident in Northern Ireland at age 19 years were included.

RESULTS

The study included 1218 persons with CP aged 19-39 years, 46 of whom died in adulthood. The prevalence of CP was 2.38 per 1000. The majority of cases had spastic CP (n=1132/1218, 93%) and could walk (n=949/1218, 78%). Those that died in adulthood typically had bilateral spastic CP (n=39/46) and used a wheelchair (n=40/46).

CONCLUSION

The prevalence of CP in adults is similar to other common neurological conditions such as multiple sclerosis and Parkinson's disease. The needs of adults with CP vary widely with almost half having two or more associated impairments that may require multiprofessional and multiagency coordination. Results from this study can be used to inform transformation of health and care services for adults with CP.

Healthcare use by children and young adults with cerebral palsy

AIM

To link routinely collected health data to a cerebral palsy (CP) register in order to enable analysis of healthcare use by severity of CP.

METHOD

The Northern Ireland Cerebral Palsy Register was linked to hospital data. Data for those on the CP register born between 1st January 1981 and 31st December 2009 and alive in 2004 were extracted, forming a CP cohort (n=1684; 57% males, 43% females; aged 0-24y). Frequencies of healthcare events, and the reasons for them, were reported according to CP severity and compared with those without CP who had had at least one hospital attendance in Northern Ireland within the study period.

RESULTS

Cases of CP represented 0.3% of the Northern Ireland population aged 0 to 24 years but accounted for 1.6% of hospital admissions and 1.6% of outpatient appointments. They had higher rates of elective admissions and multi-day hospital stays than the general population. Respiratory conditions were the most common reason for emergency admissions. Those with most severe CP were 10 times more likely to be admitted, and four times more likely to attend outpatients, than those with mild CP.

INTERPRETATION

Linkage between a register and routinely collected healthcare data provided a confirmed cohort of cases of CP that was sufficiently detailed to analyse healthcare use by disease severity.

School bonding and ethos in trajectories of offending: Results from the Belfast Youth Development Study

Background

Aspects of the school environment, such as school attachment levels, are linked to adolescent offending. Previous research has not clarified whether a school‐ or individual‐level intervention approach to improving pupil school attachment and commitment is most likely to reduce adolescent offending.

Aim

The present study assessed the impact of individual‐ and school‐level variables on offending behaviour from ages 14–16 years.

Sample

The participants were 4,049 young people from 42 mainstream schools who took part in the Belfast Youth Development Study.

Method

Multilevel modelling was used to examine the relative influence of individual‐ and school‐level variables on offending behaviour in adolescence.

Results

Pupils who had high levels of school commitment and attachment and were involved in fewer fights at age 13 reported lower levels of offending at age 14 years. Differences between schools accounted for 7% of the variation in offending. Lower individual‐level commitment was associated with higher initial levels of offending at age 14 if the school‐level ethos was of higher commitment. Lack of safety at the school level appeared to be detrimental for young people not exposed to socio‐economic deprivation.

Conclusions

Individual‐level targeted interventions are likely to be a more cost‐effective approach of reducing offending behaviour in adolescence. Additional, albeit smaller, reductions in offending levels could be achieved through school‐level interventions in some school types (e.g., deprived areas).

Training attention control of very preterm infants: protocol for a feasibility study of the Attention Control Training (ACT)

BACKGROUND

Children born preterm may display cognitive, learning, and behaviour difficulties as they grow up. In particular, very premature birth (gestation age between 28 and less than 32 weeks) may put infants at increased risk of intellectual deficits and attention deficit disorder. Evidence suggests that the basis of these problems may lie in difficulties in the development of executive functions. One of the earliest executive functions to emerge around 1 year of age is the ability to control attention. An eye-tracking-based cognitive training programme to support this emerging ability, the Attention Control Training (ACT), has been developed and tested with typically developing infants. The aim of this study is to investigate the feasibility of using the ACT with healthy very preterm (VP) infants when they are 12 months of age (corrected age). The ACT has the potential to address the need for supporting emerging cognitive abilities of VP infants with an early intervention, which may capitalise on infants' neural plasticity.

METHODS/DESIGN

The feasibility study is designed to investigate whether it is possible to recruit and retain VP infants and their families in a randomised trial that compares attention and social attention of trained infants against those that are exposed to a control procedure. Feasibility issues include the referral/recruitment pathway, attendance, and engagement with testing and training sessions, completion of tasks, retention in the study, acceptability of outcome measures, quality of data collected (particularly, eye-tracking data). The results of the study will inform the development of a larger randomised trial.

DISCUSSION

Several lines of evidence emphasise the need to support emerging cognitive and learning abilities of preterm infants using early interventions. However, early interventions with preterm infants, and particularly very preterm ones, face difficulties in recruiting and retaining participants. These problems are also augmented by the health vulnerability of this population. This feasibility study will provide the basis for informing the implementation of an early cognitive intervention for very preterm infants.

TRIAL REGISTRATION

Registered Registration ID: NCT03896490. Retrospectively registered at Clinical Trials Protocol Registration and Results System (clinicaltrials.gov).

Secondary care provision for children and young people with Cerebral palsy: A data-linkage study

IntroductionData on children with cerebral palsies are often held in registries, but these contain limited information with varying levels of follow-up. Here we show how record-linkage with healthcare datasets has enabled longitudinal follow-up if these children to understand how they use secondary care health services. Objectives and ApproachOur primary aim was to explore healthcare utilisation for children and young people (CYP) with CP aged 0-25 years between 2004 and 2014 by severity, measured by recorded Gross Motor Function Classification System (GMFCS) level. This was achieved by linking Northern Ireland Cerebral Palsy Register (NICPR) data to routinely collected secondary care data. Comparison was made to the population of CYP who were not on the NICPR i.e. non CP cases. ResultsThere were 1,693 cases in the NICPR cohort born 1981-2011. Of those, 286 (16.9%) were GMFCS 1, 662 (39.1%) GMFCS 2, 277 (16.4%) GMFCS 3, 105 (6.2%) GMFCS 4 and 342 (20.2%) were GMFCS 5 (21 (1.2%) missing). NICPR cases had 11,844 hospital admissions and 19,750 outpatient appointments during the study period accounting for 1.7% of both inpatient and outpatient attendances. Those with severe CP were more likely to have an inpatient admission and had longer stays in hospital than those with less severe CP and those without CP. 592/948 (62.4%) patients with GMFCS 1&2 had an admission compared to 345/447 (77.2%) of GMFCS 4&5 cases. The proportion of elective to emergency admissions was 72.4% versus 53.7% for non CP. Conclusion/ImplicationsThis study adds to understanding of service utilisation for those with CP in the UK, and provides comparable figures with a recent study in Australia. Thus, further demonstrating that linkage between CP registers and routinely collected healthcare may be useful for health services research and informing healthcare delivery.

A population-based data-linkage study of prescribed pain medications dispensed to persons with cerebral palsy

BackgroundPopulation-based surveys to investigate pain in cerebral palsy (CP) can be costly and results limited by recruitment bias, recall issues, and differences between self-reports and parental accounts. Secondary data analysis may provide a cost-effective alternative to study this issue and its impact in this population. ObjectiveInvestigate factors associated with dispensing of prescribed pain medications for those with CP. MethodsData from the Northern Ireland CP Register were linked with the Enhanced Prescribing Database, a database of prescriptions dispensed by community pharmacies, to investigate dispensing of prescribed pain medications (non-steroidal antiinflammatories, opioids, non-opioids) between 2010 and 2014. The sample comprised 1,430 individuals with CP and 699,645 with no diagnosis of CP, born 1981-2008. FindingsPain medications were dispensed to 61% of the CP population and 51% of the general population (p < 0.05). Individuals with CP displayed increased odds of receiving opioid analgesics compared to the general population (OR 2.81, 95%CI 2.32 to 3.40). Among those with CP, likelihood of being dispensed prescribed pain medications was greater amongst females (OR 1.34, 95%CI 1.06 to 1.70), younger age individuals (OR 1.60, 95%CI 1.02 to 2.51), those with reduced motor function (GMFCS V: OR 2.60, 95%CI 1.52 to 4.47), having seizures (OR 2.55, 95%CI 1.68 to 3.87), and living in deprived areas (OR 2.06, 95%CI 1.41 to 3.24). ConclusionDispensing of pain medications in CP is associated with clinical factors, though even after adjustment for these, living in deprived areas influences uptake of pain medication.

The Belfast Youth Development Study (BYDS): A prospective cohort study of the initiation, persistence and desistance of substance use from adolescence to adulthood in Northern Ireland

Background

Substance misuse persists as a major public health issue worldwide with significant costs for society. The development of interventions requires methodologically sound studies to explore substance misuse causes and consequences. This Cohort description paper outlines the design of the Belfast Youth Development (BYDS), one of the largest cohort studies of its kind in the UK. The study was established to address the need for a long-term prospective cohort study to investigate the initiation, persistence and desistance of substance use, alongside life course processes in adolescence and adulthood. The paper provides an overview of BYDS as a longitudinal data source for investigating substance misuse and outlines the study measures, sample retention and characteristics. We also outline how the BYDS data have been used to date and highlight areas ripe for future work by interested researchers.

Methods

The study began in 2000/1 when participants (n = 3,834) were pupils in their first year of post-primary education (age 10/11 years, school year 8) from over 40 schools in Northern Ireland. Children were followed during the school years: Year 9 (in 2002; aged 12; n = 4,343), Year 10 (in 2003; aged 13; n = 4,522), Year 11 (in 2004; aged 14; n = 3,965) and Year 12 (in 2005; aged 15; n = 3,830) and on two more occasions: 2006/07 (aged 16/17; n = 2,335) and 2010/11 (aged 20/21; n = 2,087). Data were collected on substance use, family, schools, neighbourhoods, offending behaviour and mental health. The most novel aspect of the study was the collection of detailed social network data via friendship nominations allowing the investigation of the spread of substance use via friendship networks. In 2004 (school year 11; respondents aged 14), a sub-sample of participants’ parents (n = 1,097) and siblings (n = 211) also completed measures on substance use and family dynamics.

Results

The most recent wave (in 2010/2011; respondents aged 20/21 years) indicated lifetime use of alcohol, tobacco and cannabis among the cohort was 94, 70 and 45 per cent, respectively. The paper charts the development of drug use behaviour and some of the key results to date are presented. We have also identified a number of key areas ripe for analysis by interested researchers including sexual health and education.

Conclusions

We have established a cohort with detailed data from adolescence to young adulthood, supplemented with parent and sibling reports and peer network data. The dataset, allowing for investigation of trajectories of adolescent substance use, associated factors and subsequent long-term outcomes, constitutes an important resource for longitudinal substance misuse research. A planned further wave as the cohort enter their late twenties and potential to link to administrative data sources, will further enrich the datasets.

Right from the start: protocol for a pilot study for a randomised trial of the New Baby Programme for improving outcomes for children born to socially vulnerable mothers

BACKGROUND

Children born to mothers who experience social complexity (e.g. substance misuse, intimate partner violence, mental ill health, a history of maltreatment) are at increased risk for a range of adverse outcomes at birth and during development. Home visiting programmes have been advocated as a strategy for improving outcomes for disadvantaged mothers and children, such as the Nurse-Family Partnership for young, socially disadvantaged first-time mothers. However, no evidence-based programme is available for multiparous women or older first-time mothers. The New Baby Programme was developed in Northern Ireland. It augments the universal health visiting service available in the UK with a content designed to promote maternal health and well-being in pregnancy, maximise secure attachments of children and parents and enhance sensitive parenting and infant cognitive development.

METHODS/DESIGN

This pilot study is designed to investigate whether it is possible to recruit and retain socially vulnerable mothers in a randomised trial that compares the effects of the New Baby Programme with standard antenatal and postnatal care. Feasibility issues include the referral/recruitment pathway (including inclusion and exclusion criteria), the consent and randomisation, the ability to maintain researcher blinding, the acceptability of the intervention to participants, and the feasibility and acceptability of the outcome measures. The results of the study will inform a definitive phase-3 RCT.

DISCUSSION

Trials of complex social interventions often encounter challenges that lead to the trial being abandoned (e.g. because of problems in recruitment) or present considerable analytic challenges relating to dropout, attrition and bias. This pilot study aims to maximise the chances of successful implementation.

TRIAL REGISTRATION

ISRCTN35456296 retrospectively registered.

If You Go Down to the Woods Today: Infants' Distress During a Teddy Bear's Picnic in Relation to Peer Relations and Later Emotional Problems

Infants' emotional reactions to an unusual event were assessed at a simulated birthday party during which two costumed characters enacted a Teddy Bear's Picnic. Two hundred and fifty-eight firstborn infants in a representative British community sample were observed at a mean age of 12.8 months in the presence of their parents and other participating families, in a laboratory sitting room decorated with balloons and banners. The picnic scenario was followed by free play with the other participating infants. At a mean of 36 months of age, mothers, fathers, and another informant who knew the child well completed the Child Behaviour Check List (CBCL). The majority of infants showed no vocal distress during the picnic scenario. A minority of infants expressed strong distress, which was correlated with elevated heart rate and production of cortisol. Infants who were not distressed were more likely to direct social behavior to their peers and especially likely to use physical force against peers. In comparison with strongly distressed and nondistressed infants, those who had shown mild distress during the picnic scenario were least likely to manifest later emotional problems. This pattern was particularly marked for boys. Taken together, the findings indicate that infants' strong distress during naturalistic encounters that are meant to be entertaining can suppress sociability and might indicate risk for subsequent emotional problems.

Preliminary evaluation of the Well-being in Pregnancy (WiP) questionnaire

BACKGROUND

The concept of well-being is multi-faceted by encompassing both positive and negative emotions and satisfaction with life. Measuring both positive and negative thoughts and emotions is highly relevant in maternity care that aims to optimise a woman's experience of pregnancy and childbirth, focussing on positive aspects of health and well-being, not just the prevention of ill health. Yet our understanding of well-being in pregnancy and childbirth is limited as research to date has focussed on negative aspects such as stress, anxiety or depression. The primary aim of this study is to describe the psychometric properties of a newly developed Well-being in Pregnancy (WiP) questionnaire.

METHODS

A cohort study of 318 women attending hospital antenatal clinics in Belfast completed a questionnaire including three general well-being measures (not pregnancy specific) and the newly developed WiP questionnaire. The psychometric properties of the questionnaire were analysed using correlations to explore the relationship between the WiP questionnaire with the generic well-being measures administered at the same time and exploratory factor analysis was conducted.

RESULTS

The overall Cronbach's alpha of the WiP was 0.73. Principal factor analysis was run on the WiP items and two factors were identified, one reflecting positive affect and satisfaction (Cronbach's alpha = 0.718) and the other concerns (Cronbach's alpha = 0.702). Both the overall WiP score and WiP sub-scale scores displayed significant correlations with the other well-being scales (r = 0.235-0.527).

CONCLUSIONS

Measuring well-being in pregnancy is an important step in understanding the potential physical, psychological and social benefits of pregnancy and in understanding how well-being can be enhanced for women and their families at this important life stage. The initial psychometric data presented for the WiP questionnaire are encouraging. Most importantly, the measure provides an opportunity for women to express positive and negative emotions and thoughts about their pregnancy thus reflecting the whole spectrum of well-being.

Assessing elements of a family approach to reduce adolescent drinking frequency: parent-adolescent relationship, knowledge management and keeping secrets

AIMS

To estimate (1) the associations between parent-adolescent relationship, parental knowledge and subsequent adolescent drinking frequency and (2) the influence of alcohol use on parental knowledge.

DESIGN

Path analysis of school based cohort study with annual surveys.

SETTING

Post-primary schools from urban and intermediate/rural areas in Northern Ireland.

PARTICIPANTS

A total of 4937 post-primary school students aged approximately 11 years in 2000 followed until approximately age 16 years in 2005.

MEASUREMENTS

Pupil-reported measures of: frequency of alcohol use; parent-child relationship quality; subdimensions of parental monitoring: parental control, parental solicitation, child disclosure and child secrecy.

FINDINGS

Higher levels of parental control [ordinal logistic odds ratio (OR) = 0.86, 95% confidence interval (CI) = 0.78, 0.95] and lower levels of child secrecy (OR = 0.83, 95% CI = 0.75, 0.92) were associated subsequently with less frequent alcohol use. Parental solicitation and parent-child relationship quality were not associated with drinking frequency. Weekly alcohol drinking was associated with higher subsequent secrecy (beta -0.42, 95% CI = -0.53, -0.32) and lower parental control (beta -0.15, 95% CI = -0.26, -0.04). Secrecy was more strongly predictive of alcohol use at younger compared with older ages (P = 0.02), and alcohol use was associated less strongly with parental control among families with poorer relationships (P = 0.04).

CONCLUSIONS

Adolescent alcohol use appears to increase as parental control decreases and child secrecy increases. Greater parental control is associated with less frequent adolescent drinking subsequently, while parent-child attachment and parental solicitation have little influence on alcohol use.

Does mothers' postnatal depression influence the development of imitation?

BACKGROUND

Links between mothers' postnatal depression (PND) and children's cognition have been identified in several samples, but the evidence is inconsistent. We hypothesized that PND may specifically interfere with infants' imitation, an early learning ability that features in early mother-infant interaction and is linked to memory, causal understanding and joint attention.

METHODS

A randomly controlled experiment on imitation was embedded into a longitudinal study of a representative sample of firstborn British infants, whose mothers were assessed for depression using the SCAN interview during pregnancy and at 6 months postpartum. At a mean of 12.8 months, 253 infants were presented with two imitation tasks that varied in difficulty, in counterbalanced order.

RESULTS

The infants of mothers who experienced PND were significantly less likely than other infants in the sample to imitate the modelled actions, showing a 72% reduction in the likelihood of imitation. The association with PND was not explained by sociodemographic adversity, or a history of depression during pregnancy or prior to conception. Mothers' references to infants' internal states during mother-infant interaction at 6 months facilitated imitation at 12 months, but did not explain the link with PND.

CONCLUSIONS

The findings support the hypothesis that associations between PND and later cognitive outcomes may partly derive from effects of the mother's illness on infants' early learning abilities. Support for infants' learning should be considered as an age-appropriate, child-focused component of interventions designed to ameliorate the effects of PND.

Parent ratings of child cognition and language compared with Bayley-III in preterm 3-year-olds

BACKGROUND

Parent ratings on questionnaires may provide valid and cost-effective tools for screening cognitive development of children at risk of developmental delay.

AIMS

In this study, we examined the convergent validity of combining parent-based reports of non-verbal cognitive abilities (PARCA3) and verbal abilities (CDI-III) in relation to the Bayley-III cognitive scale in 3-year-olds born late pre-term.

METHODS

Mothers of 185 late-preterm children were asked to complete the PARCA3 and the CDI-III shortly before children reached age three; children were then assessed using the Bayley-III close to their third birthday.

RESULTS

The two maternal questionnaires were significantly and moderately correlated with the Bayley-III cognitive scores. Together the maternal ratings accounted for 15% of the variance in the Bayley-III cognitive scores, after controlling for other covariates in regression analysis. In particular, the PARCA3 contributed significantly to explain variance in the Bayley-III cognitive scores when controlling for the CDI-III. However, the CDI-III was also independently associated with the Bayley-III cognitive scores.

CONCLUSIONS

Parent ratings of child cognition and language together may provide cost-effective screening of development in "at risk" preschoolers.

Behavioural outcomes at 3 years of age among late preterm infants admitted to neonatal intensive care: a cohort study

OBJECTIVE

Examine the behavioural outcomes at age 3 years of late preterm infants (LPIs) who were admitted to neonatal intensive care (NIC) in comparison with LPIs who were not admitted.

METHOD

This cohort study prospectively recruited 225 children born late preterm (34-36(+6) weeks gestation) in 2006 in Northern Ireland, now aged 3 years. Two groups were compared: LPIs who received NIC (study; n=103) and LPIs who did not receive NIC (control; n=122). Parents/guardians completed the Child Behaviour Checklist/1½-5. Descriptive maternal and infant data were also collected.

RESULTS

As expected LPI children admitted to NIC had higher medical risk than the non-admitted comparison group (increased caesarean section, born at earlier gestation, lower birth weight and an episode of resuscitation at birth). LPIs admitted to NIC scored higher on the Child Behaviour Checklist/1½-5 compared with those who were not admitted indicating more behavioural problems; this was statistically significant for the Aggressive Behaviour Subscale (z=-2.36) and the Externalising Problems Scale (z=-2.42). The group difference on the Externalising Problems Scale was no longer significant after controlling for gender, gestational age and deprivation score.

CONCLUSIONS

This study provides valuable data on the behaviour at age 3 years of LPIs admitted to NIC compared with LPIs not admitted to NIC. Further research would be beneficial to explore medical and psychosocial explanations for observed differences between groups using large prospective cohort studies.

Neonatal intensive care and late preterm infants: health and family functioning at three years

BACKGROUND

Late preterm infants (LPIs), born at 34+0 to 36+6 weeks of gestation contribute a significant proportion of all neonatal intensive care (NIC) admissions and are regarded as being at risk of adverse outcomes compared to term-born infants.

AIM

To explore the health outcomes and family functioning of LPIs who required neonatal intensive care, at three years of age.

STUDY DESIGN AND SUBJECTS

This cohort study included 225 children born late preterm, between 1 January and 31 December 2006 in Northern Ireland. Children admitted for NIC (study group, n=103) were compared with children who did not require NIC or who required special care only for up to three days (comparison group, n=122).

OUTCOME MEASURES

Health outcomes were measured using the Health Status Questionnaire, health service usage by parent report and family functioning using the PedsQL™ Family Impact Module.

RESULTS

LPIs who required NIC revealed similar health outcomes at three years in comparison to those who did not. Despite this, more parents of LPIs who required NIC reported visiting their GP and medical specialists during their child's third year of life. Differences in family functioning were also observed with mothers of LPIs who required NIC reporting, significantly lower levels of social and physical functioning, increased difficulties with communication and increased levels of worry.

CONCLUSIONS

LPIs were observed to have similar health outcomes at three years of age regardless of NIC requirement. The increase in GP and medical specialist visits and family functioning difficulties observed among those infants who required NIC merits further investigation.

School-related predictors of smoking, drinking and drug use: evidence from the Belfast Youth Development Study

OBJECTIVE

To examine whether students' school engagement, relationships with teachers, educational aspirations and involvement in fights at school are associated with various measures of subsequent substance use.

METHODS

Data were drawn from the Belfast Youth Development Study (n = 2968). Multivariate logistic models examined associations between school-related factors (age 13/14) and substance use (age 15/16).

RESULTS

The two factors which were consistently and independently associated with regular substance use among both males and females were student-teacher relationships and fighting at school: positive teacher-relationships reduced the risk of daily smoking by 48%, weekly drunkenness by 25%, and weekly cannabis use by 52%; being in a fight increased the risk of daily smoking by 54%, weekly drunkenness by 31%, and weekly cannabis use by 43%. School disengagement increased the likelihood of smoking and cannabis use among females only.

CONCLUSION

Further research should focus on public health interventions promoting positive relationships and safety at school.

Known Risk Factors for Violence Predict 12-Month-Old Infants’ Aggressiveness With Peers

This study tested the hypothesis that 12-month-old infants’ use of force against peers is associated with known risk factors for violence. We conducted a prospective longitudinal study, which included laboratory observations of firstborn British infants ( N = 271) during simulated birthday parties. No gender differences in aggressiveness were observed. The infants’ observed aggressiveness was significantly correlated with mothers’ mood disorder during pregnancy and with mothers’ history of conduct problems. Infants’ observed aggressiveness was correlated with parents’ ratings of infants’ anger and aggression, which were also predicted by mothers’ mood disorder and history of conduct problems. Our findings indicate that infants at risk for serious aggression can already be identified when the motor ability to use physical force first enters the human repertoire.

Levels of neonatal thyroid hormone in preterm infants and neurodevelopmental outcome at 5 1/2 years: millennium cohort study

CONTEXT

Transient hypothyroxinemia is the commonest thyroid dysfunction of premature infants, and recent studies have found adverse associations with neurodevelopment. The validity of these associations is unclear because the studies adjusted for a differing range of factors likely to influence neurodevelopment.

OBJECTIVE

The aim was to describe the association of transient hypothyroxinemia with neurodevelopment at 5.5 yr corrected age.

DESIGN

We conducted a follow-up study of a cohort of infants born in Scotland from 1999 to 2001 ≤34 wk gestation.

MAIN OUTCOME MEASURES

We measured scores on the McCarthy scale adjusted for 26 influences of neurodevelopment including parental intellect, home environment, breast or formula fed, growth retardation, and use of postnatal drugs.

RESULTS

A total of 442 infants ≤34 wk gestation who had serum T(4) measurements on postnatal d 7, 14, or 28 and 100 term infants who had serum T(4) measured in cord blood were followed up at 5.5 yr. Infants with hypothyroxinemia (T(4) level ≤ 10th percentile on d 7, 14, or 28 corrected for gestational age) scored significantly lower than euthyroid infants (T(4) level greater than the 10th percentile and less than the 90th percentile on all days) on all McCarthy scales, except the quantitative. After adjustment for confounders of neurodevelopment, hypothyroxinemic infants scored significantly lower than euthyroid infants on the general cognitive and verbal scales.

CONCLUSIONS

Our findings do not support the view that the hypothyroxinemic state, in the context of this analysis, is harmless in preterm infants. Many factors contribute both to the etiology of hypothyroxinemia and neurodevelopment; strategies for correction of hypothyroxinemia should acknowledge its complex etiology and not rely solely on one approach.

Identifying early signs of aggression: psychometric properties of the Cardiff infant contentiousness scale

Our aim was to develop an age-appropriate measure of early manifestations of aggression. We constructed a questionnaire about normative developmental milestones into which a set of items measuring infants' use of physical force against people and expressed anger were included. These items comprise the Cardiff Infant Contentiousness Scale (CICS). Evidence for the reliability and validity of the CICS is provided from analyses of a sample of N=310 British infants, assessed at a mean age of 6 months as part of a larger longitudinal study of the development of aggression. The informants' CICS ratings demonstrated reasonable levels of internal consistency and interrater agreement. Informants' ratings were validated by observations of infants' distress in response to restraint in a car seat. Longitudinal analyses revealed that contentiousness was stable over time and that contentiousness at 6 months predicted infants' later use of force with peers. When used in the company of other methods, the simple four-item CICS scale could serve as a useful screen for early manifestations of aggressiveness in human infants.

An fMRI study of joint attention experience

Although much is now known about eye movement detection, little is known about the higher cognitive processes involved in joint attention. We developed video stimuli which when watched, engender an experience of joint attention in the observer. This allowed us to compare an experience of joint attention to nonjoint attention within an fMRI scanning environment. Joint attention was associated with activity in the ventromedial frontal cortex, the left superior frontal gyrus (BA10), cingulate cortex, and caudate nuclei. The ventromedial frontal cortex has been consistently shown to be activated during mental state attribution tasks. BA10 may serve a cognitive integration function, which in this case seems to utilize a perception-action matching process. The activation we identified in BA10 overlaps with a location of increased grey matter density that we recently found to be associated with autistic spectrum disorder. This study therefore constitutes evidence that the neural substrate of joint attention also serves a mentalizing function. The developmental failure of this substrate in the left anterior frontal lobe may be important in the etiology of autistic spectrum disorder.