Nonlinear Association Between Weekday Sleep Duration and COPD Risk: Evidence From NHANES 2017-2023.

Additionally, we have included the following contents in the supplementary files: (1) Pattern diagram of data missingness and the process of multiple imputation ( Figure S1 and Table S1 ); (2) Variables retained by Lasso regression and their corresponding coefficients; (3) A summary table of all abbreviations; (4) Supplementary variable analysis; (5) Sensitivity Analysis Table. Hierarchical Analysis, Interaction Effects, and Forest Plot The interaction P-value for “Weekend catch-up sleep” is 0.000, indicating a highly significant interaction between weekend catch-up sleep and WSD in influencing the risk of COPD.

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