Report on smoking habits of Winnipeg school children: 1960-1968

A third survey of the smoking habits of all the students in the Winnipeg School Division from grades 5 to 12 has been completed. The three surveys cover a period of eight years and show an increase in smoking at all grade levels in both sexes. The increase is most marked in the girls and in both sexes it is most marked at the elementary school level, indicating an earlier onset of the habit of smoking. These studies indicate that present efforts to reduce the smoking habit are ineffective at the school level.     

Overweight and school performance among primary school children: the PIAMA birth cohort study

The aim of this study was to assess the association between overweight and school performance among primary school children prospectively and including a broad range of potential confounding factors. In addition it was investigated what factors mediate this association. For this purpose, data of 2,159 12-year-old children who participated in the Prevention and Incidence of Asthma and Mite Allergy (PIAMA) birth cohort study were used. Two indicators of school performance were parental reported when children were 12 years of age and included (i): the score on a standardized achievement test that Dutch children have to complete at the end of their primary education (Cito)-test and (ii): the teacher's advice regarding a child's potential performance level in secondary education. Children's height and weight were measured by a trained research assistant at the age of 8 and by their parents at the age of 12. Overweight was defined using age and gender specific cut-off points. Multivariate regression analyses were performed to assess the association between overweight and school performance. Besides, both confounder and mediation analyses were conducted. Results showed lower Cito-test scores and lower teacher's school-level advice among overweight children. These associations were no longer significant when adjusting for parental educational level, skipping breakfast, and screen time. This study found no independent association between overweight and school performance among primary school children. Results showed strong confounding by parental educational level.     

Beta-haemolytic streptococci among primary school children in Al-Ain (UAE)

A survey of 601 school children aged 5.5 to 9.5 years found that 9.2% were positive for group A beta-haemolytic streptococci. Most streptococci occurred among children between 5.5 and 6.5 years. Males had a higher carriage rate than females. Three children showed an anti-streptolysin O (ASO) titre greater than 200 UP but without any medical complications.

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Résumé Une étude portant sur 601 écoliers âgés de 5.5 à 9.5 ans a révélé que 9.2% d'entre eux étalent positifs pour le groupe A des streptocoques hémolytiques. La plupart des streptocoques se rencontrent chez les entants de 5.5 à 6.5 ans. Les écoliers de sexe masculin étalent plus atteints que les écoliers de sexe féminin. Trois enfants ont révété un titre antistreptolysine O (ASO) plus grand que 200 UT mais sans aucune complication médicale.

     

Cutaneous leishmaniasis in Al-Badarna: a prospective study among school children

This paper presents the results of a prospective study cutaneous liashmaniasis in 2 schools in Al-Badarna, during the period from July to December 1992. The pupils were interviewed and examined. Positive cases were referred to the Health Unit for treatment. Of 260 pupils 22 (8.46%) were found to be infected with active lesions.     

Prevalence of sleep-related breathing disorders among school children in Kars Turkey

Sleep and Biological Rhythms - Sleep-related breathing disorders (SRBDs) are highly prevalent and gradually increasing in school-aged children due to technological and social “jetlag”...     

Prevalence of the three categories of handedness among Malawian school children

A cross sectional study of prevalence of left, right and mixed handedness was made on 512 Malawian school children (240 boys and 272 girls) aged 6-17 years. Handedness was assessed using questionnaire incorporating questions on hand preferred for eight unimanual activities. Interviews with guardians, pupils and teachers were conducted to assess the pressure experienced by children to use right hand for unimanual activities. The overall prevalence of left-, right- and mixed-handers was 3.9%, 90.4% and 5.7%, respectively. Association between handedness and age or gender of children was nonsignificant. 96.2% of guardians and 92.7% of teachers were insistent upon use of right hand for unimanual tasks. Most of non-right handed children indicated that they had experienced pressure to use right hand for unimanual activities but they were still using left hand for one or more manual tasks. 28 pupils indicated that they stopped using left hand under the pressure from guardians and teachers.     

Prevalence of urogenital and intestinal schistosomiasis among school children in South-west Nigeria

BackgroundThe risk of co-infection with Schistosoma haematobium and S. mansoni and the potential harmful effect on morbidity and control is enhanced by the overlapping distribution of both species in sub-Saharan Africa. Despite the reported high endemicity of both species in Nigeria, studies on the spread and effect of their mixed infection are limited. Therefore, a cross-sectional survey was conducted among school children in two communities in South-west Nigeria to investigate the prevalence of mixed human schistosome infection, intensity, and possible ectopic egg elimination.MethodsUrine and stool samples were collected from consenting school children in Ilie and Ore communities of Osun State, Nigeria. Schistosoma haematobium eggs were detected in urine using the urine filtration technique, while S. mansoni eggs were detected in stool using the Kato–Katz thick smear technique.ResultsThe study enrolled 466 primary and secondary school children (211; 45.3% males vs. 255; 54.7% females; mean age 11.6 ± 3.16 years). The overall prevalence of schistosomiasis was 40% (185/466), with 19% (89/466) recording single S. haematobium infection while 9% (41/465) had a single S. mansoni infection. The geometric mean egg count for S. haematobium was 189.4 egg/10ml urine; 95% CI: range 115.9–262.9, while for S. mansoni, it was 115.7 epg; 95% CI: range 78.4–152.9. The prevalence of ectopic S mansoni (S. mansoni eggs in urine) was 4.7%, while no ectopic S. haematobium (S. haematobium eggs in stool) was recorded. Mixed infection of S. haematobium/S. mansoni had a prevalence of 9.5% (44/466). More females (54.5%) presented with S. haematobium/S. mansoni co-infection. For both parasites, males had higher infection intensity, with a significant difference observed with S. haematobium (p = 0.0004). Hematuria was significant in individuals with single S. haematobium infection (p = 0.002), mixed ectopic S. haematobium/S. mansoni (p = 0.009) and mixed S. haematobium/S. mansoni/ectopic S. mansoni (p = 0.0003).ConclusionsThese findings suggest the probability of interspecific interactions between S. haematobium and S. mansoni. Scaling up of mass administration of praziquantel and control measures in the study areas is highly desirable.     

Mobile phone ownership and use among school children in three Hungarian cities

In spite of rapid worldwide increase in mobile phone use and public concerns about associated potential health effects, little is known about patterns of mobile phone ownership and use in the general population and among children. In April 2005, we conducted a survey of mobile phone ownership and use among fourth grade school children in three Hungarian cities. From 24 schools, 1301 student filled out a short, self-administered questionnaire on basic demographics, mobile phone ownership, pattern of mobile phone use, and after-school activities. Overall, 989 students (76%) owned a mobile phone. Three hundred thirteen students (24%) used a mobile phone daily to make phone calls, and an additional 427 students (33%) used mobile phones for phone calls at least several times per week. Sixty-six students (5%) sent text messages daily and an additional 308 students (24%) sent text messages at least several times per week. Girls, children with no siblings, children who were members of a sport club, and children who played computer games daily were more likely to own and use mobile phones regularly. A higher number of socially disadvantaged children in a class predicted lower likelihood of regular mobile phone use among children. Our results suggest that mobile phone ownership and regular use is highly prevalent among school children in Hungary. Due to rapid changes in ownership patterns follow up surveys will be required to obtain information on temporal trends and changes in mobile phone ownership and pattern of use among school children.     

Epidemiologic studies on allergic diseases among rural and urban school children in Poland

451 rural children (group I) and 2000 urban children (group II) aged 10-16 years from Toruń province were inquired by a questionnaire to their parents or guardians. 9.09% of children in the country and 13.45% of those living in the city of Toruń suffered from hypersensitivity disorders; bronchial asthma was reported in 2.22% and 3.05% of cases, allergic rhinitis--in 3.77% and 7.15%, allergic conjunctivitis--in 1.33% and 2.75%, allergic edema--in 0.44% and 0.60%, urticaria--in 1.55% and 3.50%, and infantile eczema--in 0.44% and 2.10% of cases, respectively. The pollinosis prevalence rate was 2.00% in group I and 1.85% in group II. At least 2 various forms of hypersensitivity coexisted in 30.48% of allergic urban children (64.86% of patients with pollinosis among them); infantile eczema preceded allergic rhinitis and bronchial asthma symptoms in 6.29% and 11.47% of cases, respectively, while allergic rhinitis occurred before the onset of bronchial asthma in 24.59% of asthmatic children. 37.10% of individuals with positive family history of allergic conditions also fell ill with some diseases of this nature, while in those with negative family history allergy occurred only in 10.22% of cases. From environmental factors mother's diseases during pregnancy, bottle feeding and a regular diet during the first year of life, frequent respiratory infections in the early childhood and poor living conditions increased the risk of allergic diseases or aggravated their course in the population examined.     

The effect of safer play equipment on playground injury rates among school children

Background

Changes to Canadian Standards Association (CSA) standards for playground equipment prompted the removal of hazardous equipment from 136 elementary schools in Toronto. We conducted a study to determine whether applying these new standards and replacing unsafe playground equipment with safe equipment reduced the number of school playground injuries.

Methods

A total of 86 of the 136 schools with hazardous play equipment had the equipment removed and replaced with safer equipment within the study period (intervention schools). Playground injury rates before and after equipment replacement were compared in intervention schools. A database of incident reports from the Ontario School Board Insurance Exchange was used to identify injury events. There were 225 schools whose equipment did not require replacement (nonintervention schools); these schools served as a natural control group for background injury rates during the study period. Injury rates per 1000 students per month, relative risks (RRs) and 95% confidence intervals (CIs) were calculated, adjusting for clustering within schools.

Results

The rate of injury in intervention schools decreased from 2.61 (95% CI 1.93–3.29) per 1000 students per month before unsafe equipment was removed to 1.68 (95% CI 1.31–2.05) after it was replaced (RR 0.70, 95% CI 0.62–0.78). This translated into 550 injuries avoided in the post-intervention period. In nonintervention schools, the rate of injury increased from 1.44 (95% CI 1.07–1.81) to 1.81 (95% CI 1.07–2.53) during the study period (RR 1.40, 95% CI 1.29–1.52).

Interpretation

The CSA standards were an effective tool in identifying hazardous playground equipment. Removing and replacing unsafe equipment is an effective strategy for preventing playground injuries.Playgrounds provide a recreational refuge for children, away from traffic and other outdoor hazards. In addition, playground activities can enhance children''s cognitive, physical and psychosocial skills. Playground safety is of concern to physicians, parents and injury prevention advocates. Of all playground injuries that result in a visit to a hospital emergency department, 27%–40% are fractures and 17% require hospital admission — a greater frequency of admission than that associated with any other cause of pediatric injury except traffic.^1,2,3,4 The results of an observational study in Wales showed that 90% of all playground injuries resulting in a visit to an emergency department were related to the playground equipment.¹ As might be expected, playgrounds are the location within elementary schools with the highest injury rates and the most severe injuries.⁵ In a study conducted in Kingston, Ont., children were 12 times more likely to be injured in school playgrounds than in municipal playgrounds.³Standards for playgrounds have been developed both in Canada⁶ and internationally.^{7,8,9,10,11,12} The Canadian Standards Association (CSA) standards for the design, installation and maintenance of playgrounds and equipment were most recently revised in 1998.⁶ No published data exist on the relation between equipment standards and injury rates. If applying standards can identify unsafe playgrounds and, more importantly, reduce the rate of child injury, such standards would be a useful tool for school and municipal authorities responsible for playgrounds.We sought to determine the effect of replacing unsafe playground equipment (as determined using the new CSA standards) on injury rates among school children.