{"id":11453,"date":"2025-08-26T09:26:22","date_gmt":"2025-08-26T00:26:22","guid":{"rendered":"https:\/\/www.ibs.re.kr\/bimag\/?post_type=tribe_events&p=11453"},"modified":"2025-09-24T09:50:05","modified_gmt":"2025-09-24T00:50:05","slug":"tbd-joshua-wiley","status":"publish","type":"tribe_events","link":"https:\/\/www.ibs.re.kr\/bimag\/event\/tbd-joshua-wiley\/","title":{"rendered":"Sleep as part of the 24-hour day: Methods and Applications in Oncology – Joshua Wiley"},"content":{"rendered":"

Abstract<\/strong><\/p>\n

Sleep is commonly analysed as an independent factor. However, because of the 24-hour constraints on a day, changes in sleep will co-occur with changes in remaining time use. This talk introduces compositional data analysis (CoDA) for sleep research. CoDA is illustrated using 24-hour sleep and activity data from accelerometry, first cross-sectionally showing associations between sleep and activity with daily emotions. Next, CoDA is extended to multilevel models, which commonly occur in sleep research as sleep across multiple days. A Bayesian implementation in R using the new multilevelcoda package is presented and results of a simulation study discussed. Multilevel CoDA is used to analyse how nightly sleep architecture, collected via at home EEG, predicts next day affect. CoDA solves a common constraint in sleep research with sleep stages that time in all stages sums to total sleep.<\/p>\n","protected":false},"excerpt":{"rendered":"

Abstract Sleep is commonly analysed as an independent factor. However, because of the 24-hour constraints on a day, changes in sleep will co-occur with changes in remaining time use. This … <\/p>\n

Continue reading “Sleep as part of the 24-hour day: Methods and Applications in Oncology – Joshua Wiley”<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":11463,"template":"","meta":{"_editorskit_title_hidden":false,"_editorskit_reading_time":0,"_editorskit_is_block_options_detached":false,"_editorskit_block_options_position":"{}","_uag_custom_page_level_css":"","_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[221],"class_list":["post-11453","tribe_events","type-tribe_events","status-publish","has-post-thumbnail","hentry","tribe_events_cat-biomedical-mathematics-colloquium","cat_biomedical-mathematics-colloquium"],"yoast_head":"\nSleep as part of the 24-hour day: Methods and Applications in Oncology - Joshua Wiley - Biomedical Mathematics Group<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ibs.re.kr\/bimag\/event\/tbd-joshua-wiley\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sleep as part of the 24-hour day: Methods and Applications in Oncology - Joshua Wiley - Biomedical Mathematics Group\" \/>\n<meta property=\"og:description\" content=\"Abstract Sleep is commonly analysed as an independent factor. 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