| 11. |
- Sundberg, Rosita, 1944, et al.
(author)
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Nasal symptoms are associated with school performance in adolescents
- 2007
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In: J Adolesc Health. - : Elsevier BV. - 1054-139X. ; 40:6, s. 581-3
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Journal article (peer-reviewed)abstract
- Children with asthma and allergy have higher school absence rates than others, but little is known about their school performance. In a study of 9538 adolescents, nasal symptoms severe enough to affect daily activity were associated with low-grade sum, particularly in adolescents using anti-allergy medication.
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| 12. |
- Werner, Bo, et al.
(author)
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Increasing rate of weight loss among schoolchildren, especially girls, in Sweden
- 2007
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In: Journal of Adolescent Health. - : Elsevier BV. - 1054-139X .- 1879-1972. ; 40:3, s. 238-244
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Journal article (peer-reviewed)abstract
- Purpose: This study compared the rates of relative weight loss (body mass index, BMI) among boys and girls, from age 7 to 18 years, in two birth cohorts to determine changing patterns over time. Methods: Samples from two Swedish national birth cohorts, 1973 and 1981 (all children born on the 15th day of every month), with few missing cases (4.5% and 1.6%, respectively), were studied. Data (height and weight) were collected from school health records and analyzed longitudinally. Episodes of more than 5% reduction in BMI for 3530 boys and girls born in 1973 and 3041 boys and girls born in 1981 were analyzed and compared. Results: An increased rate in 1981 compared with 1973 of relative weight reduction episodes was found for both boys and girls. The increase for girls was most: pronounced, started from a higher rate, and was seen in nearly all body weight categories and in all ages. For boys, the reductions increased for all body weight categories in the age interval 7-9 years; otherwise, the pattern was much more heterogeneous. Body weight and reduction of BMI were highly correlated in both cohorts, as more of the overweight than the thinner children reduced their BMI. For girls, the increase in rate reduction between 1981 and 1973 was highest among the thinnest individuals. Conclusions: Both boys and, especially, girls had an increased rate of weight loss in two longitudinal cohorts. Whether healthy or unhealthy behavior is causing the increase needs to be investigated further. (C) 2007 Society for Adolescent Medicine. All rights reserved.
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| 13. |
- Werner, Bo, et al.
(author)
-
Obesity in Swedish schoolchildren is increasing in both prevalence and severity
- 2007
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In: Journal of Adolescent Health. - : Elsevier BV. - 1054-139X .- 1879-1972. ; 41:6, s. 536-543
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Journal article (peer-reviewed)abstract
- Purpose: To monitor and describe, on a national level, the development of body mass index (BMI), overweight, and obesity of schoolchildren in Sweden aged 7-18 years over a period of 8 years. Methods: Longitudinal and cross-sectional studies of two nationally representative cohorts. A representative sample of 3,749 individuals from a birth cohort of 109,663 individuals born in 1973, and another representative sample of 3,158 individuals from a birth cohort of 94,064 individuals born in 198 1; 4.5% and 1.6% of those born in 1973 and 1981, respectively, were missing from the sample. Data regarding height and weight from school health records. Results: From age 7-18 year, a strong positive secular change in BMI is found at all ages, and the rate of overweight and obesity is increasing for both boys and girls. Furthermore, obesity is growing more severe. Conclusions: Nationally representative longitudinal BMI data for two cohorts, in which nonresponse bias is minimized, permitted monitoring and revealed a nationwide strongly positive secular change in BMI in Sweden, over a period of 8 years for individuals aged 7-18 years. (D 2007 Society for Adolescent Medicine. All rights reserved.
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