title: Test-retest reliability of the scale of participation in organized activities among adolescents in the Czech Republic and Slovakia.
abstract: OBJECTIVE
  Participation in organized activities is related with a range of positive outcomes, but the way such participation is measured has not been scrutinized. Test-retest reliability as an important indicator of a scale's reliability has been assessed rarely and for "The scale of participation in organized activities" lacks completely. This test-retest study is based on the Health Behaviour in School-aged Children study and is consistent with its methodology.
  
  
  METHODS
  We obtained data from 353 Czech (51.9 % boys) and 227 Slovak (52.9 % boys) primary school pupils, grades five and nine, who participated in this study in 2013. We used Cohen's kappa statistic and single measures of the intraclass correlation coefficient to estimate the test-retest reliability of all selected items in the sample, stratified by gender, age and country.
  
  
  RESULTS
  We mostly observed a large correlation between the test and retest in all of the examined variables (κ ranged from 0.46 to 0.68). Test-retest reliability of the sum score of individual items showed substantial agreement (ICC = 0.64).
  
  
  CONCLUSIONS
  The scale of participation in organized activities has an acceptable level of agreement, indicating good reliability.
authors.affiliation: Department of Health Psychology, Medical Faculty, P. J. Safarik University in Kosice, Kosice, Slovak Republic. lucia.bosakova@upjs.sk.|Department of Quantitative Methods, Faculty of Business Economy in Kosice, University of Economics in Bratislava, Bratislava, Slovak Republic. lucia.bosakova@upjs.sk.|Olomouc University Social Health Institute (OUSHI), Palacky University in Olomouc, Olomouc, Czech Republic. lucia.bosakova@upjs.sk.
authors.forename: Lucia
authors.initials: L
authors.lastname: Bosakova
authors.affiliation: Department of Health Psychology, Medical Faculty, P. J. Safarik University in Kosice, Kosice, Slovak Republic.|Olomouc University Social Health Institute (OUSHI), Palacky University in Olomouc, Olomouc, Czech Republic.
authors.forename: Peter
authors.initials: P
authors.lastname: Kolarcik
authors.affiliation: Department of Health Psychology, Medical Faculty, P. J. Safarik University in Kosice, Kosice, Slovak Republic.|Olomouc University Social Health Institute (OUSHI), Palacky University in Olomouc, Olomouc, Czech Republic.
authors.forename: Daniela
authors.initials: D
authors.lastname: Bobakova
authors.affiliation: Department of Recreation and Leisure Studies, Faculty of Physical Culture, Palacky University in Olomouc, Olomouc, Czech Republic.
authors.forename: Martina
authors.initials: M
authors.lastname: Sulcova
authors.affiliation: Department of Health Psychology, Medical Faculty, P. J. Safarik University in Kosice, Kosice, Slovak Republic.|Department of Social Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Jitse P
authors.initials: JP
authors.lastname: Van Dijk
authors.affiliation: Department of Social Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
authors.forename: Sijmen A
authors.initials: SA
authors.lastname: Reijneveld
authors.affiliation: Department of Health Psychology, Medical Faculty, P. J. Safarik University in Kosice, Kosice, Slovak Republic.|Olomouc University Social Health Institute (OUSHI), Palacky University in Olomouc, Olomouc, Czech Republic.
authors.forename: Andrea Madarasova
authors.initials: AM
authors.lastname: Geckova
mesh_terms: D000293:Adolescent; D002648:Child; D003256:Community Participation / Q000706:statistics & numerical data*; D018153:Czech Republic; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D015203:Reproducibility of Results; D018154:Slovakia; D011795:Surveys and Questionnaires / Q000592:standards*
keywords: Adolescents; HBSC; Organized activities; Reliability; Test–retest