Tokyo, April 8 -- UMIN Clinical Trials Registry (UMIN-CTR) received information related to the study (UMIN000061177) titled 'Relationship between Chewing difficulties and sleep duration' on April 8.

Study Type: Observational

Primary Sponsor: Institute - Nihon University Hospital

Condition: Condition - This cross-sectional study included 8,252 Japanese adults undergoing health checkups. Classification by malignancy - Others Genomic information - NO

Objective: Narrative objectives1 - We aimed to examine the association between sleep duration and masticatory difficulties and to explore whether monocyte-related systemic inflammation is involved in this relationship. Basic objectives2 - Others

Eligibility: Age-lower limit - 20 years-old

Gender - Male and Female Key inclusion criteria - This cross-sectional study was conducted using data from Japanese adults who underwent annual health checkups at the Health Planning Center of Nihon University Hospital between April 2024 and March 2025. Key exclusion criteria - Declined consent Missing data on sleep duration Missing data on leukocyte subclasses Missing data on masticatory status Target Size - 10000

Recruitment Status: Recruitment status - Preinitiation Date of protocol fixation - 2018 Year 04 Month 01 Day Anticipated trial start date - 2026 Year 04 Month 08 Day Last follow-up date - 2026 Year 04 Month 30 Day

To know more, visit https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000070009

Disclaimer: Curated by HT Syndication.