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Table 3 Testing ADL as a mediator and physical activity and perceived social support as two moderators in the relationship between sleep quality and psychological distress

From: The association between sleep quality and psychological distress among older Chinese adults: a moderated mediation model

Model pathways R2 B SE t 95%CI
Sleep quality→ADL 0.226 −1.094 0.088 −12.486 (− 1.266, −0.923)
Physical activity→ADL   7.421 0.388 19.130 (6.660, 8.181)
Sleep quality×Physical activity→ADL   1.015 0.106 9.607 (0.808, 1.222)
Sleep quality→Psychological distress 0.380 1.762 0.091 19.332 (1.583, 1.940)
ADL → Psychological distress   −0.397 0.020 −20.086 (−0.436, − 0.358)
PSSS→Psychological distress   −0.286 0.022 −13.013 (−0.329, − 0.243)
Sleep quality×PSSS→Psychological distress   −0.033 0.006 −5.280 (−0.046, − 0.021)
ADL × PSSS→Psychological distress   −0.001 0.001 −1.095 (−0.004, 0.001)
  1. Note: Covariates used to control included sex, residence, age, education level, monthly income, marital status, smoking status, drinking status, and chronic conditions