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    <title>Dataset for: Better Sleep Better Health baseline survey</title>
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    <abstract>Baseline quantitative survey data collected as part of the Better Sleep Better Health study. It contains data on 358 participants in two schools, with baseline data collected through a self-completed survey with items on sleep health and insomnia (using the Cleveland Adolescent Sleepiness Questionnaire, Munich Chronotype Questionnaire and Insomnia Severity Index (ISI)) and mental health with the UNICEF Measuring Mental Health Among Adolescents and Young People at the Population Level (MMAPP) tool.</abstract>
    <date>2025-11-25</date>
    <date_type>completed</date_type>
    <publisher>London School of Hygiene &amp; Tropical Medicine</publisher>
    <id_number>10.17037/DATA.00004877</id_number>
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    <collection_method>We conducted a cross-sectional survey from July 7th-August 23rd 2024. In addition to socio-demographic and puberty development items, we collected data on sleep health from the Cleveland Adolescent Sleepiness Questionnaire (CASQ), Insomnia Severity Index (ISI)) and Munich ChronoType Questionnaire (MCTQ) . We assessed sleep-related cognitions (Dysfunctional Beliefs and Attitudes about Sleep (DBAS), and depression and anxiety symptoms using the 25-item UNICEF Measuring Mental Health Among Adolescents and Young People at the Population Level (MMAPP tool Domains 1 and 2), which provide scores equivalent to the Patient Health Questionnaire-9 [PHQ-9] score for depression and Generalised Anxiety Disorder Assessment-7 [GAD-7] score for anxiety. Depression and anxiety ‘caseness’ were defined as screening positive on items 1-4 (depression) or 5-10 (anxiety), and a cut-off score of &gt;18 on the sum of 15 depression- or 13 anxiety-specific MMAPP questions respectively (UNICEF: The MMAPP Toolkit: Operational Guidelines and Protocols). 
We undertook cognitive testing of survey tools not previously used in this setting (MMAP, DBAS, MCTQ) with 8 students, to ensure cultural appropriateness, clarity, and relevance. This led to minor adaptations to tools, to optimize comprehension and validity. The survey was self-administered on tablets using Open Data Kit (ODK) software, except for the MCTQ, as cognitive testing informed us that administering this tool by trained researchers improved accuracy in these more complex responses on sleep patterns and timing (sleep onset, wake times).</collection_method>
    <grant>MR/Z503794/1</grant>
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