Table 1.

Psychometric Attribute of the Instrument (n=319)

Psychometric Attribute	ZAS	CESD-R10
No of item	20	10
Raw explain variance by measure	50.2%	37.4%
Unexplained variance	<15%	<15%
Cronbach’s alpha	0.91	0.78
Person reliability	0.83	0.62
Person separation	2.22	1.27
Item reliability	0.99	0.97
Item separation	9.43	6.04