The simplified Chinese version of the Nonrestorative Sleep Scale in Chinese young adults and measurement invariance across language and age

Table 8 The association of age and Language with NRSS subscales (n = 1551)

Variables	Refreshment from sleep		Physical/Medical symptoms of NRS		Daytime function		Affective symptoms
Variables	Adjusted β^a	P	Adjusted β^a	P	Adjusted β^a	P	Adjusted β^a	P
Age	0.01	0.351	0.00	0.686	0.01	0.415	0.02	< 0.001^***
Language (Ref: traditional Chinese)	−0.61	0.005^**	0.68	0.024^*	0.32	0.117	0.85	< 0.001^***

ISSN: 2050-7283