{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,24]],"date-time":"2026-04-24T03:17:28Z","timestamp":1777000648846,"version":"3.51.4"},"reference-count":47,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2023,3,1]],"date-time":"2023-03-01T00:00:00Z","timestamp":1677628800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Convocatoria para el Desarrollo de Protocolos de Investigaci\u00f3n Cl\u00ednica sobre Temas Prioritarios para la Escuela de Medicina y Ciencias de la Salud 2018 Tecnologico de Monterrey"},{"name":"Tecnologico de Monterrey"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>COVID-19 pandemic confinement caused changes in families and children\u2019s routines worldwide. Studies conducted at the beginning of the pandemic have examined the harmful effects of these changes on mental health, including sleep disturbances. As sleep is essential for optimal childhood development, this study was designed to determine preschool-aged (3\u20136 years old) children\u2019s sleep parameters and mental well-being during the COVID-19 pandemic in Mexico. Using a cross-sectional design, a survey was applied to parents of preschool children, inquiring about their children\u2019s confinement status, routine changes, and electronics use. The parents responded to the Children\u2019s Sleep Habits Questionnaire and the Strengths and Difficulties Questionnaire to assess children\u2019s sleep and mental well-being. To provide objective sleep data, the children wore wrist actigraphy for seven days. Fifty-one participants completed the assessment. The children\u2019s mean age was 5.2 years, and the prevalence of sleep disturbances was 68.6%. The use of electronic tablets in the bedroom near bedtime and symptoms of mental health deterioration (i.e., emotional distress and behavioral difficulties) were associated with sleep disturbances and their severity. The COVID-19 pandemic\u2019s confinement-related routine changes greatly impacted preschool children\u2019s sleep and well-being. We recommend establishing age-tailored interventions to manage children at higher risk.<\/jats:p>","DOI":"10.3390\/ijerph20054386","type":"journal-article","created":{"date-parts":[[2023,3,1]],"date-time":"2023-03-01T02:28:17Z","timestamp":1677637697000},"page":"4386","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Sleep Disturbances and Mental Well-Being of Preschool Children during the COVID-19 Pandemic in Mexico"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1020-2488","authenticated-orcid":false,"given":"Daniela","family":"Le\u00f3n Rojas","sequence":"first","affiliation":[{"name":"Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, Monterrey 64710, NL, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1157-0004","authenticated-orcid":false,"given":"Fabiola","family":"Castorena Torres","sequence":"additional","affiliation":[{"name":"Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, Monterrey 64710, NL, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9555-5882","authenticated-orcid":false,"given":"Salomon","family":"Alvarado Ramos","sequence":"additional","affiliation":[{"name":"Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, Monterrey 64710, NL, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alfredo","family":"del Castillo Morales","sequence":"additional","affiliation":[{"name":"Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, Monterrey 64710, NL, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9557-5741","authenticated-orcid":false,"given":"Julieta","family":"Rodr\u00edguez-de-Ita","sequence":"additional","affiliation":[{"name":"Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Ave. Morones Prieto 3000, Monterrey 64710, NL, Mexico"},{"name":"Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Hospital San Jos\u00e9, TecSalud, Monterrey 64710, NL, Mexico"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,1]]},"reference":[{"key":"ref_1","unstructured":"(2022, December 04). 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