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Parents of the children completed the questionnaires. \n\nThe data set also contains a sub-sample of 337 parents who were randomly selected from the larger sample. They completed additional questionnaires at 3-month intervals (T2, T3, and T4)."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2025-06-05"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Social Sciences"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Screen time"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Children's health"}}]},{"typeName":"publication","multiple":true,"typeClass":"compound","value":[{"publicationCitation":{"typeName":"publicationCitation","multiple":false,"typeClass":"primitive","value":"Lo, C.K.M., Chan, K.L., Chan, E.W.W., Ho, F.K., & Ip, P. 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M., Chan, E. W. W., Chan, K. L., Ip, P., & Ho, F. K. (2025). Association between screen time and health-related quality of life: Testing the displacement and relational hypotheses in a prospective cohort study. 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