Cristine Glazebrook

Systematic review and meta-analyses of risk factors for childhood overweight identifiable during infancy

Objective To determine risk factors for childhood overweight that can be identified during the first year of life to facilitate early identification and targeted intervention. Design Systematic review and meta-analysis. Search strategy Electronic database search of MEDLINE, EMBASE, PubMed and CAB Abstracts. Eligibility criteria Prospective observational studies following up children from birth for at least 2 years. Results Thirty prospective studies were identified. Significant and strong independent associations with childhood overweight were identified for maternal pre-pregnancy overweight, high infant birth weight and rapid weight gain during the first year of life. Meta-analysis comparing breastfed with non-breastfed infants found a 15% decrease (95% CI 0.74 to 0.99; I2=73.3%; n=10) in the odds of childhood overweight. For children of mothers smoking during pregnancy there was a 47% increase (95% CI 1.26 to 1.73; I2=47.5%; n=7) in the odds of childhood overweight. There was some evidence associating early introduction of solid foods and childhood overweight. There was conflicting evidence for duration of breastfeeding, socioeconomic status at birth, parity and maternal marital status at birth. No association with childhood overweight was found for maternal age or education at birth, maternal depression or infant ethnicity. There was inconclusive evidence for delivery type, gestational weight gain, maternal postpartum weight loss and ‘fussy’ infant temperament due to the limited number of studies. Conclusions Several risk factors for both overweight and obesity in childhood are identifiable during infancy. Future research needs to focus on whether it is clinically feasible for healthcare professionals to identify infants at greatest risk.

Increased incidence of psychotic disorders in migrants from the Caribbean to the United Kingdom

BACKGROUND Several studies have replicated the finding of increased incidence of schizophrenia and related psychoses in first and second generation migrants from the Caribbean. The finding has remained consistent in studies employing different methods, but concern has been expressed about indirect methods of calculating the population at risk. This study aims to overcome these short-comings. METHOD A further prospective study was undertaken in Nottingham assembling an inception cohort of psychotic patients (N = 168) presenting from a defined catchment area. The 1991 census, which includes codings for self-ascribed ethnic origin, was used to calculate the denominator, employing correction factors for potential under-enumeration. Case-ascertainment was based upon all service contacts and subjects had in-depth assessments including the SCAN. Collateral history was obtained from informants. RESULTS Subjects born in the Caribbean, or who had one or both parents born in the Caribbean, had a greatly elevated risk (incidence ratios above 7) for all psychotic disorders and for ICD-10 (DCR)-defined F20 Schizophrenia. CONCLUSIONS The size of the increase and the methodological safeguards employed support the validity of this now highly replicated finding. A personal or family history of migration from the Caribbean is a major risk factor for psychosis; the consistency of this finding justifies a systematic evaluation of potential aetiological factors. Any hypothesis derived from the evidence so far must explain: increased incidence in first and second generation migrants; increased risk for all psychoses (including affective psychoses); and an effect specifically associated with a migration history from the Caribbean to Northern Europe.

Asthma as a Barrier to Children's Physical Activity: Implications for Body Mass Index and Mental Health

OBJECTIVES. The purpose of this work was to identify barriers to physical activity in children with asthma and to compare their customary activity levels, BMI and emotional well-being with that of children with other medical conditions. It was hypothesized that children with asthma would have higher BMI and lower levels of customary activity. PATIENTS AND METHODS. We studied children aged 7 to 14 years attending hospital outpatient clinics for either asthma (asthma group: n = 56) or for otorhinolaryngology or dermatological conditions (nonasthma group: n = 61). In this cross-sectional survey, childrens weight and height were recorded and their BMI classified according to International Obesity Task Force classification of obesity. Child mental health was assessed by the parent-rated Strengths and Difficulties Questionnaire. The child-rated Physical Activity Questionnaire assessed total sedentary and physical activities during the previous 24 hours. RESULTS. The asthma group had a higher mean BMI (20.78 vs 18.82) and higher rates of obesity (21.4% vs 6.6%). Children with asthma reported fewer physical activities than the nonasthma group (median 4 per day vs 6 per day) but comparable levels of sedentary activities. Asthma was the strongest predictor of lower activity scores, followed by younger age. The asthma group had higher levels of emotional difficulties and, within this group, more active children had better mental health. More parents in the asthma group identified the childs health as a barrier to exercise (60.7% vs 11%). The same was true of children (66.1% vs 11.5%). CONCLUSIONS. We found that children attending a hospital clinic for asthma were more likely to be obese and were significantly less active than a comparison group with other medical conditions. Asthma was identified as a barrier to exercise by parents and children. Strategies to promote exercise within pediatric asthma care are needed to protect both mental and physical health.

Mental health and disclosure of HIV status in Zambian adolescents with HIV infection: Implications for peer-support programs.

Objectives: To examine emotional and behavioural difficulties in HIV positive Zambian adolescents and to determine the relationship between disclosure of HIV status and mental health. Design: A cross-sectional survey. Methods: Participants were 127 HIV positive adolescents aged 11 to 15 years recruited through clinics in the Lusaka region. Mental health was assessed using the youth report version of the Strengths and Difficulties Questionnaire (SDQ). Caregivers completed the parent SDQ. Sixty-two participants were invited for a semi-structured interview which probed views on attending a peer support group. Results: Compared to a British community sample participants had increased mental health problems (OR, 2.1), particularly emotional symptoms (OR = 3.6) and peer problems (OR = 7.1). The majority of children (n = 94) were receiving antiretroviral (ARV) treatment, but only 48 children (37.8%) had their HIV status disclosed. Those who had not had their HIV status disclosed were younger (P < 0.001) and less likely to be receiving ARV treatment (P < 0.001). Controlling for these factors they were also more likely to score in the abnormal range of the emotional difficulties subscale (OR = 2.63, 95% CI: 1.11 to 6.26). Of 38 interviews transcribed, content analysis showed that only 3 children were opposed to participation in a peer-group program, with the majority (23/38) expressing reasoned and positive responses, regardless of disclosure status. Conclusion: High rates of emotional and peer problems were found in this sample but disclosure of HIV status did not have a negative effect on mental health. Interventions to promote disclosure could facilitate access to emotional and peer support.

A randomized, controlled trial of an interactive educational computer package for children with asthma.

OBJECTIVE. The purpose of this study was to evaluate the impact and acceptability of an educational multimedia program designed to promote self-management skills in children with asthma. METHODS. We conducted a randomized, controlled trial with measures at baseline and 1- and 6-month follow-up. The trial was conducted in pediatric outpatient respiratory clinics in 3 United Kingdom hospitals. Participants included 101 children aged 7 to 14 years under the care of hospital-based asthma services. The children were randomly assigned to receive an asthma information booklet alone or the booklet plus The Asthma Files, an interactive CD-ROM for children with asthma. Asthma knowledge was the primary outcome measure. Other measures included asthma locus of control, lung function, use of oral steroids, and school absence. RESULTS. At the 1-month follow-up (n = 99), children in the computer group had improved knowledge compared with the control group and a more internal locus of control. There were no differences in objective lung-function measures, hospitalizations, or oral steroid use. The study participants were positive in their evaluation of the intervention. At the 6-month follow-up (n = 90), significantly fewer children in the intervention group had required oral steroids and had had time off school for asthma in the previous 6 months. The difference did not reach statistical significance in the intention-to-treat analysis for both steroid use and school absence. CONCLUSION. The Asthma Files was found to be an effective and popular health education tool for promoting asthma self-management skills within pediatric care.

Randomised trial of a parenting intervention during neonatal intensive care

Objective: To evaluate the influence of parenting intervention on maternal responsiveness and infant neurobehavioural development following a very premature birth. Design: Cluster-randomised controlled trial, with a crossover design and three-month washout period. Setting: Six neonatal intensive care units. Patients: Infants born <32 weeks’ gestation. Intervention: The Parent Baby Interaction Programme (PBIP) is a supportive, educational intervention delivered by research nurses in the neonatal intensive care unit, with optional home follow-up for up to six weeks after discharge. Main outcome measures: Parenting stress at 3 months adjusted age, as measured by the Parenting Stress Index (PSI). Other outcomes included the Neurobehavioural Assessment of the Preterm Infant (NAPI) and maternal interaction as assessed by the Nursing Child Assessment Teaching Scale (NCATS) and the responsivity subscale for Home Observation for Measurement of the Environment (HOME). Results: 112 infants were recruited in the intervention phases and 121 in the control phases. Mean standardised NAPI scores at 35 weeks did not differ between the PBIP and control groups. Both groups had low but similar NCATS caregiver scores before discharge (36.6 in the PBIP group and 37.4 in control, adjusted mean difference −0.7, 95% CI −2.7 to 1.4). At three months, adjusted age mean PSI scores for the PBIP group were 71.9 compared with 67.1 for controls (adjusted mean difference 3.8, 95% CI −4.7 to 12.4). NCATS scores and HOME responsivity scores were similarly distributed between the groups. Conclusion: This early, nurse-delivered, parent-focused interaction programme intervention had no measurable effects on short-term infant neurobehavioural function, mother–child interaction or parenting stresses.

Pregnant women's attitudes towards alcohol consumption

BackgroundThere is uncertainty as to whether there is a safe threshold for drinking alcohol during pregnancy. We explored pregnant womens attitudes towards drinking alcohol in pregnancy and their attitudes towards sources of information about drinking in pregnancy following recent changes in UK government guidance.MethodsA qualitative study involving individual, semi-structured interviews with 20 pregnant women recruited from community organisations in the UK. Interview transcripts were analysed qualitatively using thematic analysis.ResultsMost women found information and advice about safe levels of drinking in pregnancy confusing and lacking in evidence and detail. Although most women considered that there were risks involved with drinking in pregnancy and these perceptions influenced their behaviour, only six women reported abstinence. Women reported being influenced by advice from family and friends and their experiences of previous pregnancies. Many had received no individual advice from general practitioners or midwives relating to drinking during pregnancy.ConclusionPregnant women wished to take responsibility for their own health and make choices based on informed advice. In order to do so, they require clear and consistent advice about safe levels of drinking from policy makers and health professionals. This is an important issue as women might drink socially during their pregnancy.

Is the incidence of psychotic disorder in decline? Epidemiological evidence from two decades of research

BACKGROUND It is unclear whether the incidence of first episode psychoses is in decline. We had the opportunity to determine whether incidence had changed over a 20-year period in a single setting, and test whether this could be explained by demographic or clinical changes. METHODS The entire population at-risk aged 16-54 in Nottingham over three time periods (1978-80, 1993-95 and 1997-99) were followed up. All participants presenting with an ICD-9/10 first episode psychosis were included. The remainder of the population at-risk formed the denominator. Standardized incidence rates were calculated at each time period with possible change over time assessed via Poisson regression. We studied six outcomes: substance-induced psychoses, schizophrenia, other non-affective psychoses, manic psychoses, depressive psychoses and all psychotic disorders combined. RESULTS Three hundred and forty-seven participants with a first episode psychosis during 1.2 million person-years of follow-up over three time periods were identified. The incidence of non-affective or affective psychoses had not changed over time following standardization for age, sex and ethnicity. We observed a linear increase in the incidence of substance-induced psychosis, per annum, over time (incidence rate ratios: 1.15; 95% CI 1.05-1.25). This could not be explained by longitudinal changes in the age, sex and ethnic structure of the population at-risk. CONCLUSIONS Our findings suggest psychotic disorders are not in decline, though there has been a change in the syndromal presentation of non-affective disorders, away from schizophrenia towards other non-affective psychoses. The incidence of substance-induced psychosis has increased, consistent with increases in substance toxicity over time, rather than changes in the prevalence or vulnerability to substance misuse. Increased clinical and popular awareness of substance misuse could also not be excluded.

Validation of a brief, reliable scale to measure knowledge about the health risks associated with obesity

Background:Obesity represents a serious threat to health through its association with conditions such as type 2 diabetes mellitus, coronary heart disease and certain types of cancer. Knowledge regarding risk to health is an important determinant of behaviour and is the focus of many health education strategies. To the authors’ knowledge, there is no valid and reliable measure of knowledge regarding the health risks associated with obesity.Aim:To validate a short, reliable psychometric scale measuring knowledge regarding the effects of obesity on health, the Obesity Risk Knowledge (ORK-10) scale.Methods:The ORK-10 scale was administered to a sample of individuals with no specific obesity-related expertise (n=230) and a sample of experts (n=200). Univariate and multivariate statistical analyses were used to investigate the scales criterion validity.Results:The ORK-10 scale has good internal consistency (Cronbachs alpha coefficient>0.7) and is acceptable for use in a UK adult population with an estimated reading age of 12–13 years. The scale demonstrated strong criterion validity, as those with educational or vocational expertise in the field of obesity achieved significantly higher scores than nonexperts (median 9.0 vs 4.0, Z=−17.364; P<0.001). This relationship was maintained after controlling for the potentially confounding factors of age and level of education. Nonexperts demonstrated low levels of knowledge regarding the health risks associated with obesity.Conclusions:The ORK-10 scale meets standard psychometric criteria for reliability and validity. This scale could be used to assess the effectiveness of health education interventions, to target the provision of health information and to investigate the interaction between knowledge and obesity-related behaviour.

Residence of incident cohort of psychotic patients after 13 years of follow up

Objective :To establish the residential history of an incident cohort of psychotic patients 13 years after their first contact with the psychiatric services. Design :Tracing of all patients admitted to the WHO study on determinants of outcome of severe mental disorders in Nottingham between 1978 and 1980. Patients were assessed using standardised and comparable instruments, and extra information was obtained from key informants and medical records. Setting :Catchment area of Nottingham psychiatric services. Main outcome measures :Main place of residence over the previous two years and residential history over 13 years in terms of homelessness, imprisonment, and use of high dependency psychiatric facilities. Results :95 patients were traced. At the point of follow up no patients were in long stay psychiatric wards, two were in supervised residence, none was homeless, and none was in prison or a high security hospital. 85 patients were living either independently alone or with their family or friends in the community. Of these, 44 had had no contact with the psychiatric services at the point of follow up. Conclusions :Although many patients experienced a difficult early course of illness, the longer term outcome of the disorder was associated with remarkably low periods of homelessness and imprisonment and low use of intensive care facilities. These findings offer some reassurance, given the concerns about the effectiveness of community oriented care for this potentially most vulnerable group of psychiatric patients.