Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência & Saúde Coletiva (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-81232021000301047 |
Resumo: | Abstract This study analyzed the validity and reliability of an instrument with scales measuring factors associated with screen time in adolescents. Two cross-sectional studies included students for analyses of validity and internal consistency (n=1138, 51.5% boys) and test-retest reproducibility (n=194, 56.2% boys). Individual (attitude, self-efficacy and expectations), social (behaviors, rules, beliefs and family support and support of school members) and physical environmental (home and bedroom equipment) factors of screen time were evaluated. All the scales of the instrument met the statistical criteria of the validity of the exploratory factorial analysis (p<0.001). The exploratory factorial analysis indicated five one-dimensional and three two-factor scales (self-efficacy, expectations and familiar behavior), with factorial loads of 0.56 to 0.88. There were significant correlations between the scores of almost all the scales and the reported screen time (p<0.05). Eight of nine scales/subscales showed Cronbach’s α value being higher than 0.70, and ICC ranged from 0.63 to 0.83. In conclusion, the instrument presented scales with acceptable validity and reliability and can be used to measure factors associated with screen time in Brazilian students. |
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Validity and reliability of an instrument to measure factors associated with screen time in Brazilian studentsSedentary lifestylesAssociated factorsQuestionnaireValidity testsReproducibility of resultsAbstract This study analyzed the validity and reliability of an instrument with scales measuring factors associated with screen time in adolescents. Two cross-sectional studies included students for analyses of validity and internal consistency (n=1138, 51.5% boys) and test-retest reproducibility (n=194, 56.2% boys). Individual (attitude, self-efficacy and expectations), social (behaviors, rules, beliefs and family support and support of school members) and physical environmental (home and bedroom equipment) factors of screen time were evaluated. All the scales of the instrument met the statistical criteria of the validity of the exploratory factorial analysis (p<0.001). The exploratory factorial analysis indicated five one-dimensional and three two-factor scales (self-efficacy, expectations and familiar behavior), with factorial loads of 0.56 to 0.88. There were significant correlations between the scores of almost all the scales and the reported screen time (p<0.05). Eight of nine scales/subscales showed Cronbach’s α value being higher than 0.70, and ICC ranged from 0.63 to 0.83. In conclusion, the instrument presented scales with acceptable validity and reliability and can be used to measure factors associated with screen time in Brazilian students.ABRASCO - Associação Brasileira de Saúde Coletiva2021-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-81232021000301047Ciência & Saúde Coletiva v.26 n.3 2021reponame:Ciência & Saúde Coletiva (Online)instname:Associação Brasileira de Saúde Coletiva (ABRASCO)instacron:ABRASCO10.1590/1413-81232021263.31322018info:eu-repo/semantics/openAccessBarbosa Filho,Valter CordeiroBandeira,Alexsandra SilvaRech,Cassiano RicardoLopes,Adair SilvaMota,JorgeSilva,Kelly Samaraeng2021-03-09T00:00:00Zoai:scielo:S1413-81232021000301047Revistahttp://www.cienciaesaudecoletiva.com.brhttps://old.scielo.br/oai/scielo-oai.php||cienciasaudecoletiva@fiocruz.br1678-45611413-8123opendoar:2021-03-09T00:00Ciência & Saúde Coletiva (Online) - Associação Brasileira de Saúde Coletiva (ABRASCO)false |
dc.title.none.fl_str_mv |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students |
title |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students |
spellingShingle |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students Barbosa Filho,Valter Cordeiro Sedentary lifestyles Associated factors Questionnaire Validity tests Reproducibility of results |
title_short |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students |
title_full |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students |
title_fullStr |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students |
title_full_unstemmed |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students |
title_sort |
Validity and reliability of an instrument to measure factors associated with screen time in Brazilian students |
author |
Barbosa Filho,Valter Cordeiro |
author_facet |
Barbosa Filho,Valter Cordeiro Bandeira,Alexsandra Silva Rech,Cassiano Ricardo Lopes,Adair Silva Mota,Jorge Silva,Kelly Samara |
author_role |
author |
author2 |
Bandeira,Alexsandra Silva Rech,Cassiano Ricardo Lopes,Adair Silva Mota,Jorge Silva,Kelly Samara |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Barbosa Filho,Valter Cordeiro Bandeira,Alexsandra Silva Rech,Cassiano Ricardo Lopes,Adair Silva Mota,Jorge Silva,Kelly Samara |
dc.subject.por.fl_str_mv |
Sedentary lifestyles Associated factors Questionnaire Validity tests Reproducibility of results |
topic |
Sedentary lifestyles Associated factors Questionnaire Validity tests Reproducibility of results |
description |
Abstract This study analyzed the validity and reliability of an instrument with scales measuring factors associated with screen time in adolescents. Two cross-sectional studies included students for analyses of validity and internal consistency (n=1138, 51.5% boys) and test-retest reproducibility (n=194, 56.2% boys). Individual (attitude, self-efficacy and expectations), social (behaviors, rules, beliefs and family support and support of school members) and physical environmental (home and bedroom equipment) factors of screen time were evaluated. All the scales of the instrument met the statistical criteria of the validity of the exploratory factorial analysis (p<0.001). The exploratory factorial analysis indicated five one-dimensional and three two-factor scales (self-efficacy, expectations and familiar behavior), with factorial loads of 0.56 to 0.88. There were significant correlations between the scores of almost all the scales and the reported screen time (p<0.05). Eight of nine scales/subscales showed Cronbach’s α value being higher than 0.70, and ICC ranged from 0.63 to 0.83. In conclusion, the instrument presented scales with acceptable validity and reliability and can be used to measure factors associated with screen time in Brazilian students. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-81232021000301047 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-81232021000301047 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1413-81232021263.31322018 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
ABRASCO - Associação Brasileira de Saúde Coletiva |
publisher.none.fl_str_mv |
ABRASCO - Associação Brasileira de Saúde Coletiva |
dc.source.none.fl_str_mv |
Ciência & Saúde Coletiva v.26 n.3 2021 reponame:Ciência & Saúde Coletiva (Online) instname:Associação Brasileira de Saúde Coletiva (ABRASCO) instacron:ABRASCO |
instname_str |
Associação Brasileira de Saúde Coletiva (ABRASCO) |
instacron_str |
ABRASCO |
institution |
ABRASCO |
reponame_str |
Ciência & Saúde Coletiva (Online) |
collection |
Ciência & Saúde Coletiva (Online) |
repository.name.fl_str_mv |
Ciência & Saúde Coletiva (Online) - Associação Brasileira de Saúde Coletiva (ABRASCO) |
repository.mail.fl_str_mv |
||cienciasaudecoletiva@fiocruz.br |
_version_ |
1754213047390437376 |