RT journal article T1 Association between co-sleeping in the first year of life and preschoolers´ sleep patterns A1 Garrido Martinez de Salazar, Carlos A1 González Caballero, Juan Luis A1 Garcia, Pilar A1 Gianni, Maria Lorella A1 Garrido, Silvia A1 González, Lucía A1 Atance, Verónica A1 Raffaeli, Genny A2 Estadística e Investigación Operativa K1 Co-sleeping K1 Infants K1 Preschool Children K1 Sleep pattern AB This study aimed to investigate the association between co-sleeping practiced during the first year of life and preschoolers' sleep patterns. A cross-sectional study including toddlers was designed to analyze their sleep patterns. The Brief Infant Sleep Questionnaire, validated in Spanish, was used to measure sleep quality. A latent class analysis was performed to identify qualitative subgroups in the sample and explore the effects of co-sleeping. The sleep patterns of 276 children were analyzed. A total of 181 (65%) parents reported having practiced co-sleeping with their children. The latent class analysis identified a two-class solution with two different sleep patterns. One of them showed a worse quality sleep pattern, which had a significant association with having practiced co-sleeping during the first year of life, and with the fact that they were still sleeping in the parents' room, among other characteristics related to co-sleeping and parental concerns. Breastfeeding also showed association with a worse quality sleep pattern. Conclusion: Based on the present findings, co-sleeping during the first year of life appears to be associated with poor sleep patterns in young preschoolers PB Springer Science and Business Media Deutschland GmbH SN 1432-1076 YR 2024 FD 2024 LK http://hdl.handle.net/10498/32617 UL http://hdl.handle.net/10498/32617 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 10-nov-2026