{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T11:17:59Z","timestamp":1784546279432,"version":"3.55.0"},"reference-count":65,"publisher":"JMIR Publications Inc.","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JMIR Aging"],"abstract":"Abstract<\/jats:title>\n \n Background<\/jats:title>\n Given the rapid development of the digital economy and the sustained proliferation of the internet, digital engagement in older adults has garnered mounting attention from the academic community. However, research has yet to systematically examine the impact of digital engagement on sleep in this demographic.<\/jats:p>\n <\/jats:sec>\n \n Objective<\/jats:title>\n This study aims to examine the association of digital engagement\u2014operationalized as digital access and internet use duration\u2014with the sleep schedules (nocturnal sleep duration, afternoon nap duration, and sleep onset time) of older adults in China, using longitudinal data and robust statistical modeling to explore longitudinal associations and potential mechanisms.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n Data were derived from 4 waves (2014, 2016, 2018, and 2020) of the China Family Panel Studies, involving 16,784 older adults (\u226560 y). We used panel fixed effects models and a random-effects ordered logit model to analyze the effects on continuous outcomes (nocturnal and nap sleep duration), controlling for time-invariant individual characteristics. As sleep onset time is an ordinal variable, a random-effects ordered logit model was used for this outcome. Moderation analyses were conducted by introducing interaction terms (digital engagement\u00d7sex and digital engagement\u00d7residence) into the models to examine heterogeneity across subgroups (urban or rural, men or women). Mediation analyses were performed using the Sobel test with year-fixed effects and the nonparametric bootstrap method (1000 resamples) to assess the significance of indirect effects via mechanistic pathways (nonfarm employment, protein intake, memory, depressive mood, and instrumental activities of daily living).<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n The study included a total of 16,784 older adults, with an average age of 69 (SE 6.946) years, including 9100 (54.22%) women and 7684 (45.78%) men. The results showed that both digital access (\u03b2=\u2212.15, 95% CI \u2212.25 to \u2212.06;\n P<\/jats:italic>\n =.002) and internet use time (\u03b2=\u2212.07, 95% CI \u2212.13 to \u2212.01;\n P<\/jats:italic>\n =.027) were significantly associated with significantly shorter sleep duration of older adults. Digital access was significantly associated with a significant reduction in the length of afternoon naps among older adults, while internet use did not have this effect; both digital access and internet use were significantly associated with a significant delay in older adults\u2019 sleep onset time. Digital access was associated with older adults\u2019 sleep schedules through its correlations with nonfarm employment, protein intake, memory, depressive mood, and instrumental activities of daily living. Digital access had a greater and more significant impact on men and urban older adults, while internet use had a greater and more significant impact on women and urban older adults.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n The study indicates that digital engagement, such as the use of electronic devices, is associated with a reduction in both daily and nap sleep duration, as well as a delay in sleep onset, among older adults.<\/jats:p>\n <\/jats:sec>","DOI":"10.2196\/79731","type":"journal-article","created":{"date-parts":[[2025,11,5]],"date-time":"2025-11-05T21:41:16Z","timestamp":1762378876000},"page":"e79731-e79731","source":"Crossref","is-referenced-by-count":5,"title":["The Double-Edged Sword of Digital Engagement\u2014How Digital Access and Internet Use Reshape Sleep Schedules and Underlying Mechanisms in Older Adults: Longitudinal Observational Study"],"prefix":"10.2196","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1431-7722","authenticated-orcid":false,"given":"Chi","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-1546-6134","authenticated-orcid":false,"given":"Longxuan","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-7106-5127","authenticated-orcid":false,"given":"Li","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8500-1536","authenticated-orcid":false,"given":"Han","family":"Hu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-6005-8527","authenticated-orcid":false,"given":"Heyang","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1010","published-online":{"date-parts":[[2025,11,5]]},"reference":[{"issue":"2","key":"R1","doi-asserted-by":"publisher","first-page":"348","DOI":"10.1007\/s12126-021-09422-0","article-title":"The impact of an internet use promotion programme on communication, internet use, and the extent of social networks among low-income older adults","volume":"47","author":"Kim","journal-title":"Ageing Int"},{"issue":"5","key":"R2","doi-asserted-by":"publisher","first-page":"477","DOI":"10.1080\/13607860601086546","article-title":"Promoting older adults\u2019 well-being through Internet training and use","volume":"11","author":"Shapira","journal-title":"Aging & Mental Health"},{"issue":"1","key":"R3","doi-asserted-by":"publisher","DOI":"10.1186\/s12889-024-18269-4","article-title":"The impact of internet use on health among older adults in China: a nationally representative study","volume":"24","author":"Zhou","journal-title":"BMC Public Health"},{"key":"R4","unstructured":"Malta S . 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