Table 1.

Socio-demographic Characteristics of the Sample of Korean American Immigrants

	Overall=343		Women (n=161)		Men (n= 182)
	N or Mean	% or SD	N or Mean	% or SD	N or Mean	% or SD	p
Covariates
Age (years)	40.93	9.85	42.6	11.02	39.4	8.43	0.003
Married (yes/no)	260	75.8%	124	77.0%	136	74.7%	0.621
Income < $40,000	65	18.9%	33	20.5%	32	17.5%	0.492
Employed	189	55.1%	66	40.9%	123	67.5%	<0.001
Comorbidity	0.74	1.55	0.83	1.70	0.66	1.41	0.326
Sleep environment	17.43	6.46	16.86	6.41	17.93	6.48	0.125
Acculturation-related variables
Age immigrated to U.S.	29.53	7.43	29.48	7.30	29.26	7.20	0.426
English proficiency	5.69	1.63	5.42	1.68	5.94	1.54	0.003
Korean neighborhood	0.39	0.48	0.44	0.49	0.35	0.48	0.114
Korean orientation	6.26	1.30	6.16	1.23	6.36	1.35	0.149
American orientation	4.27	1.52	4.13	1.52	4.39	1.52	0.118
Acculturative stress subscales
Homesickness	2.02	0.73	2.16	0.77	1.89	0.68	<0.001
Social isolation	1.96	0.80	2.08	0.83	1.85	0.76	0.009
Employment barrier	1.64	0.78	1.79	0.88	1.50	0.66	<0.001
Discrimination	1.76	0.67	1.90	0.70	1.64	0.62	<0.001
Civic disengagement	1.65	0.85	1.78	0.94	1.54	0.74	0.008
Family problem	1.38	0.50	1.40	0.51	1.35	0.49	0.393
Sleep duration
Habitual sleep duration (mins)	427.75	61.02	430.49	71.31	425.45	50.29	0.771
Habitual weekday sleep duration (mins)	416.85	65.37	422.96	74.03	411.76	56.25	0.260
Habitual weekend sleep duration (mins)	454.98	74.04	450.19	84.13	459.23	64.89	0.118
% of Short sleep (<6 hours)	37	10.7%	22	13.6%	15	8.2%	0.106