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. 2025 Aug 22;15:30980. doi: 10.1038/s41598-025-12546-x

Table 4.

The mediating effect of social relations quality in the relationship between sleep quality and quality of life among medical students living in dormitories.

Effect (β) SE a t Statistics p-values 95% CI
Path Coefficient
Constant 50.94 0.95 53.60 < 0.001 49.07 to 52.81
Path a: Social relation quality ∀ Sleep quality 0.38 0.12 -2.96 0.003 -0.63 to -0.12
Constant 42.00 3.93 10.67 < 0.001 34.26 to 49.73
Path b: Social relation quality ∀ Quality of life 0.25 0.07 3.54 0.0004 0.11 to 0.40
Total effects
Path c: Direct + Indirect -0.80 0.18 -4.35 < 0.001 -1.16 to -0.44
Direct effect
Path cʹ: Sleep quality ∀ Quality of life ˗0.70 0.18 ˗3.82 0.0002 ˗1.06 to ˗0.34
Indirect effects
Path a × Path b: Sleep quality ∀ Social relations quality ∀ Quality of life ˗0.098 0.04 b ---- ---- ˗0.18 to ˗0.02

Social relations quality as a mediator, a Standard Error, b Bootstrapping Standard Error.