The Psychiatric Quarterly

Optimal 24-Hour Sleep Duration and Depression Risk in Chinese Middle-Aged and Elderly: A Machine Learning and RCS Analysis of Nonlinear Associations

Cross-sectional study of 13,718 peoplePopulations

The paper

Capital University of Economics and Business; Hebei Medical University

The Psychiatric Quarterly, 13 Aug 2026

doi.org/10.1007/s11126-026-10307-1PubMed 42593723