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Rising prevalence of allergy to peanut in children: Data from 2 sequential cohorts.

BACKGROUND: Allergy to peanut is common. However, it is not known whether the prevalence of sensitization and clinical allergy to peanut is increasing. OBJECTIVE: We sought to determine any change in the prevalence of peanut sensitization and reactivity in early childhood in 2 sequential cohorts in the same geographic area 6 years apart. METHODS: Of 2878 children born between September 1, 1994, and August 31, 1996, living on the Isle of Wight, 1273 completed questionnaires, and 1246 had skin prick tests at the age of 3 to 4 years. Those with positive skin prick test responses to peanut were subjected to oral peanut challenges, unless there was a history of immediate systemic reaction. These data were compared with information on sensitization and clinical allergy to peanut available from a previous cohort born in 1989 in the same geographic area. RESULTS: There was a 2-fold increase in reported peanut allergy (0.5 % [6/1218] to 1.0 % [13/1273]), but the difference was nonsignificant (P =.2). Peanut sensitization increased 3-fold, with 41 (3.3 %) of 1246 children sensitized in 1994 to 1996 compared with 11 (1.1 %) of 981 sensitized 6 years ago (P =.001). Of 41 sensitized children in the current study, 10 reported a convincing clinical reaction to peanut, and 8 had positive oral challenge results, giving an overall estimate of peanut allergy of 1.5% (18/1246). CONCLUSIONS: Sensitization to peanut had increased between 1989 and 1994 to 1996. There was a strong but statistically nonsignificant trend for increase in reported peanut allergy.

Child, Preschool↗

Clinical manifestations of Fabry disease in children: data from the Fabry Outcome Survey.

BACKGROUND: Fabry disease is a rare X-linked disorder caused by deficient activity of the enzyme alpha-galactosidase A. This produces progressive lysosomal accumulation of globotriaosylceramide throughout the body, leading to organ failure and premature death. AIM: Here, we present the clinical manifestations of Fabry disease in children enrolled in FOS--the Fabry Outcome Survey--a European database of the natural history of Fabry disease and the effects of enzyme replacement therapy with agalsidase alfa (Replagal). METHODS: Currently, there are 545 patients in FOS, from 11 European countries. We analysed the baseline demographic and clinical characteristics of 82 of these patients (40 boys, 42 girls) who were below 18 y of age. The median age at evaluation (defined as the median age at entry into FOS) was 12.5 and 13.2 y for boys and girls, respectively. RESULTS: The most frequent early clinical manifestations of Fabry disease were neurological (acroparaesthesiae, altered temperature sensitivity) and gastrointestinal symptoms (altered bowel habits and abdominal pain), which were documented in about 80% and 60% of patients, respectively, at the time of evaluation and subsequent entry into FOS. Tinnitus, vertigo, fatigue and angiokeratoma were present in over 40% of patients. Symptoms were noted in early childhood and occurred with similar frequency in boys and girls, although the onset of symptoms was 2-5 y later in girls than in boys. There was an approximately 3-y delay from onset of symptoms to diagnosis, and patients were frequently misdiagnosed. CONCLUSION: Although the life-threatening complications of Fabry disease, such as stroke and renal and heart failure, are not seen in children, the present analysis shows that other symptoms are common and may have an impact on quality of life.

Adolescent↗

Epidemiology of chronic renal failure in children: data from the ItalKid project.

OBJECTIVE: The ItalKid Project is a prospective, population-based registry that was started in 1990 with the aim of assessing the epidemiology of childhood chronic renal failure (CRF), describing the natural history of the disease, and identifying factors that influence its course. This article reports the epidemiologic results. METHODS: Prevalent and incident cases of CRF in children and adolescents were identified throughout Italy (total population base: 16.8 million children) by regularly asking all of the pediatric hospitals and adult nephrology units potentially involved in caring for children with kidney disease to report all cases that meet the inclusion criteria and then to update the clinical information regarding all previously reported patients on an annual basis. The inclusion criteria were 1) creatinine clearance (Ccr; according to Schwartz's formula) <75 mL/min/1.73 m2 bsa (predialysis) and 2) an age of <20 years at the time of registration. RESULTS: By December 31, 2000, 1197 patients (803 boys) had been registered. The mean incidence was 12.1 cases per million (range: 8.8-13.9), and the (point) prevalence was 74.7 per million of the age-related population. The mean age at registration was 6.9 +/- 5.4 years, and the mean Ccr was 41.7 +/- 20.5 mL/min/1.73 m2. The leading causes of CRF were hypodysplasia associated with urinary tract malformations (53.6%) and isolated hypodysplasia (13.9%), whereas glomerular disease accounted for as few as 6.8%. Hypodysplasia associated with primary vesicoureteral reflux (VUR) alone was responsible for as many as 25.8% of the cases, thus being the leading single cause with a female-to-male ratio of 1:3.2. The diagnosis of VUR was established early in life at an overall median age of 3 months (range: 0-180). However, the diagnosis was made significantly later among girls, whose median age at diagnosis was 9 months (range: 0-156; 95% confidence interval: 21.2-49.3) as against 2 months among boys (range: 0-180; 95% confidence interval: 10.9-21.2). As many as 23.6% of the registered patients had at least 1 severe associated disease (excluding urological abnormalities). A steep decline in renal survival occurred during puberty and early postpuberty, leading almost 70% of the patients to end-stage renal failure by the age of 20 years. When the population was subdivided on the basis of Ccr at the time of registration, the probability of kidney survival at 20 years of age was significantly different, being 63% in patients with mild renal failure (Ccr 51-75 mL/min), 30% in those with moderate renal failure (Ccr 25-50 mL/min), and 3% in those with severe renal failure (Ccr <25 mL/min). The incidence of renal replacement therapy was 7.3/y/100 patients, and the case-fatality rate on conservative treatment was 1.41%. CONCLUSIONS: This study provides important and recent epidemiologic information concerning CRF in children and adolescents: a mean annual incidence of 12.1 new patients per million of the age-related population with a very high proportion (57.6%) of hypodysplastic renal diseases with or without urinary tract malformation. By the age of 20 years, the cumulative probability of end-stage renal disease in the population as a whole was 68%. The probability of kidney survival sharply declined during puberty and early postpuberty. This is the first prospective evaluation of the incidence and outcome of CRF in children, including those with mild and moderate renal impairment.

Adolescent↗

Private dental and prescription-drug coverage in children: data from the medical expenditure panel survey.

OBJECTIVE: Most studies on health insurance have examined primarily basic medical insurance coverage; few have looked at supplemental insurance and/or dental-insurance coverage. Prescription-drug and dental-insurance coverage are becoming increasingly important due to continued increase in health care costs and changes in cost-sharing structure of health plans. This study examined prescription-drug coverage and dental-insurance coverage in the context of overall insurance coverage. METHOD: This study utilized the Household Component File from the 2000 Medical Expenditure Panel Survey (MEPS), a national survey on medical care conducted by the Agency for Healthcare Research and Quality (AHRQ). Univariate and bivariate analyses were performed to provide estimates on children's prescription-drug and dental-insurance coverage. Multivariate logistic regression analyses were conducted to identify demographic and socioeconomic factors that influence coverage. RESULTS: In 2000, 68.5% of US children had private insurance, 22.2% had public insurance, and 9.3% were uninsured. Among children with private insurance, only 56.9% had dental-insurance coverage and 76.3% had prescription-drug coverage. Family income level, maternal education, and race were significant predictors of dental insurance and prescription-drug coverage. CONCLUSION: Although significant strides have been made to insure US children, a large percentage of children still do not have comprehensive coverage. Even among privately insured children, many are without dental or prescription-drug coverage. Those who were poor, minority, and with low maternal education had lower likelihood of dental and prescription-drug coverage.

Child↗

[Diagnosis of insulin-dependent diabetes in children: data from the incidence registry].

Prospective registry of newly diagnosed cases of insulin-dependent diabetes mellitus in subjects under 20 years began in 1988 in Aquitaine, Lorraine, Basse- and Haute-Normandie (population base = 2,288,018 inhabitants under 20). The registry gave a complete coverage of the population as the capture-recapture method gave a 98% yield. The mean annual incidence was 7.6/100,000 for the period 1988-1990. A specific survey aimed at describing clinical and biological presentation at diagnosis. The main symptom was polyuria in 98% of the cases, fatigue in 58% and weight loss in 44%. Abdominal pain was reported in 34% of the cases. Diagnosis was ascertained by measurement of plasma glucose, which was > or = 11 mmol/l in 95% of the cases and associated with ketonuria in 84% of the children. Coma in 13% of the children and acidosis (total CO2 < or = 18 mmol/l) in 48% showed the severity at diagnosis. Ketonuria and acidosis were significantly more frequent in the younger age group (0-4 yr). Diagnosis was made by a general practitioner in the majority of the cases; conversely insulinotherapy was initiated at the hospital in 95% of the cases. Initial insulin treatment was 2 daily injections. Following the French experience the collaborative network EURODIAB ACE has undertaken the same survey among the European Registries. Important geographical variations in incidence rates of IDDM in children has been reported across Europe but it is not known whether this interferes with presentation at diagnosis of the disease.

Adolescent↗

Do changes in body mass index percentile reflect changes in body composition in children? Data from the Fels Longitudinal Study.

OBJECTIVE: Our aim was to examine the degree to which changes in BMI percentile reflect changes in body fat and lean body mass during childhood and how age and gender affect these relationships. METHODS: This analysis used serial data on 494 white boys and girls who were aged 8 to 18 years and participating in the Fels Longitudinal Study (total 2319 observations). Total body fat (TBF), total body fat-free mass (FFM), and percentage of body fat (%BF) were determined by hydrodensitometry, and then BMI was partitioned into its fat and fat-free components: fat mass index (FMI) and FFM index (FFMI). We calculated predicted changes (Delta) in FMI, FFMI, and %BF for each 10-unit increase in BMI percentile using mixed-effects models. RESULTS: FFMI had a linear relationship with BMI percentile, whereas FMI and %BF tended to increase dramatically only at higher BMI percentiles. Gender and age had significant effects on the relationship between BMI percentile and FFMI, FMI, and %BF. Predicted Delta%BF for boys 13 to 18 years of age was negative, suggesting loss of relative fatness for each 10-unit increase in BMI percentile. CONCLUSIONS: In this longitudinal study of white children, FFMI consistently increased with BMI percentile, whereas FMI and %BF had more complicated relationships with BMI percentile depending on gender, age, and whether BMI percentile was high or low. Our results suggest that BMI percentile changes may not accurately reflect changes in adiposity in children over time, particularly among male adolescents and children of lower BMI.

Adolescent↗

Renal replacement therapy in children: data from 12 registries in Europe.

In June 2000 the ERA-EDTA Registry office moved to Amsterdam and started collecting core data on renal replacement therapy (RRT) entirely through national and regional registries. This paper reports the pediatric data from 12 registries. The analysis comprised 3,184 patients aged less than 20 years and starting RRT between 1980 and the end of 2000. The incidence of RRT rose from 7.1 per million of age-related population (pmarp) in the 1980-1984 cohort to 9.9 pmarp in the 1985-1989 cohort, and remained stable thereafter. The prevalence increased from 22.9 pmarp in 1980 to 62.1 in 2000. Hemodialysis was the commonest form of treatment at the start of dialysis, but peritoneal dialysis gained popularity during the late 1980s. Pre-emptive transplantation accounted for 18% of the first treatment modality in the 1995-2000 cohort. The relative risk of death of patients starting dialysis in the period 1995-2000 was reduced by 36% [adjusted hazard ratio (AHR) 0.64 [95% confidence interval (CI) 0.41-1.00] and that of those receiving a first allograft by 42% [AHR 0.58 (95% CI 0.34-1.00)], compared with patients in the period 1980-1984. The prevalence of RRT in children has continued to rise, while its incidence has been stable for about 15 years. Patient survival has improved in both dialysis patients and transplant recipients. The development of this pediatric registry will form the basis for more-detailed and focused studies in the future.

Cause of Death↗

Gender differences in long-term health consequences of physical abuse of children: data from a nationally representative survey.

OBJECTIVES: This study investigated the effects of physical abuse in childhood on health problems in adulthood and assessed gender differences in these associations. METHODS: We used data from 8000 men and 8000 women who were interviewed in the National Violence Against Women Survey. We used multivariate logistic regression to test for main and interactive effects and conducted post hoc probing of significant moderational effects. RESULTS: Men were more likely than women to have experienced physical abuse during childhood. Whereas abuse had negative consequences for both boys and girls, it was generally more detrimental for girls. CONCLUSIONS: Findings suggest the need to consider gender differences and long-term adverse health consequences in the development of intervention strategies to address physical abuse in childhood.

Adolescent↗

[Frequency of goiter and urinary iodine in the Peidmont school children. Data on iodine contents in some local food].

The frequency of thyroid alterations was examined and dietary iodine intake was assessed via urinary iodine in 6-15 yr-old schoolchildren from 145 towns in Piedmont and the Aosta Valley. Local food iodine values were also determined in 56 towns. Alteration frequency and daily urinary elimination of iodine were inversely proportional, even within individual school populations. The endemic goitre urinary iodine threshold (around 40-50 mug I/g creatine) varied from area to area, with as much as double this value in some instances. Drinking water iodine was usually from 0 to 3 mug/l, with relatively low values in high localities. Much higher levels were noted in the presence of salsobromoiodic hot springs. Local Piedmontese foods contained less iodine than those bought in city markets.

Adolescent↗