0000000001336611
AUTHOR
Välimaa, Raili
showing 3 related works from this author
Smoking trends among adolescents from 1990 to 2002 in ten European countries and Canada
2006
BACKGROUND: Daily smoking adolescents are a public health problem as they are more likely to become adult smokers and to develop smoking-related health problems later on in their lives. METHODS: The study is part of the four-yearly, cross-national Health Behaviour in School-aged Children study, a school-based survey on a nationally representative sample using a standardised methodology. Data of 4 survey periods are available (1990–2002). Gender-specific daily smoking trends among 14–15 year olds are examined using logistic regressions. Sex ratios are calculated for each survey period and country. Interaction effects between period and gender are examined. RESULTS: Daily smoking prevalence i…
Reasons for Exercise Inventory koulukyselyssä : mittarin reliabiliteetti- ja rakennevaliditeettitarkastelua
2005
Tässä artikkelissa raportoidaan aikuisille kehitetyn Reasons for exercise inventory:n (REI) käyttökokeilua yläkoululaisilla. Mittaria esitestattiin WHO-Koululaistutkimuksen vuoden 2006 kyselyä varten osana esi- ja luotettavuustutkimusta, joka toteutettiin Itä- ja Länsi-Suomen lääneissä helmikuussa 2005. Oppilaat täyttivät kaksi samansisältöistä kyselyä kahden viikon välein. REI-mittarin väittämiin vastasi 194 seitsemäs- ja yhdeksäsluokkalaista peruskoululaista. REI-mittarin pysyvyyttä arvioitiin testi-uusintatesti-korrelaatioiden (Intraclass-korrelaatiokerroin, Spearmanin järjestyskorrelaatio, Pearsonin tulomomenttikorrelaatio) avulla. Pääkomponenttianalyysin avulla saaduista liikuntasyiden…
Screen-based activities and physical complaints among adolescents from the Nordic countries
2010
BACKGROUND: A positive association between time spent on sedentary screen-based activities and physical complaints has been reported, but the cumulative association between different types of screen-based activities and physical complaints has not been examined thoroughly. METHODS: The cross-sectional association between screen-based activity and physical complaints (backache and headache) among students was examined in a sample of 31022 adolescents from Denmark, Sweden, Norway, Finland, Iceland and Greenland, as part of the Health behaviour in school-aged children 2005/06 (HBSC) study. Daily hours spent on screen-based activities and levels of physical complaints were assessed using self-r…