Table 3.

Mediation analysis of sleep disturbance

Variable	Model 1 (Mental health problems)		Model 2 (Sleep disturbance)		Model 3 (Mental health problems)
	Coefficient                                t		Coefficient                                   t		Coefficient                                t
Life satisfaction	− 0.73	− 10.14***	− 0.15	− 6.20***	− 0.59	− 8.34***
Sleep disturbance					0.93	8.25***
R2	0.17		0.13		0.25
F	12.37		9.00		18.69

Note: adjusted for gender, age, marital status, hukou, education level, employment status, monthly household income time since migration and chronic disease

^***P < 0.001