Table 3.

Ordered logistic regression models of holistic East Asian medicine (EM) use on the use of biomedical services and other covariates

	Model 1		Model 2		Model 3		Model 4
	OR	(95% CI)	OR	(95% CI)	OR	(95% CI)	OR	(95% CI)
Biomedical service use	1.27***	(1.13 to 1.42)	1.18**	(1.05 to 1.33)	1.23***	(1.09 to 1.38)	1.17**	(1.04 to 1.31)
EM use frequency (Ref=1 to 3 times)
4 to 10 times			2.29***	(2.00 to 2.64)			2.30***	(2.00 to 2.65)
11 to 30 times			3.38***	(2.90 to 3.96)			3.45***	(2.93 to 4.06)
31 or more times			3.40***	(2.71 to 4.27)			3.53***	(2.78 to 4.47)
Self-rated health status (Ref=very good)
Very bad					0.88	(0.54 to 1.43)	0.58*	(0.35 to 0.95)
Bad					1.32	(0.93 to 1.88)	0.92	(0.64 to 1.32)
Fair					1.10	(0.78 to 1.55)	0.84	(0.59 to 1.19)
Good					0.91	(0.64 to 1.29)	0.78	(0.55 to 1.11)
Female							1.09	(0.96 to 1.24)
Age (Ref=less than 20)
20s or 30s							2.96***	(1.98 to 4.44)
40s							3.28***	(2.13 to 5.05)
50s							3.06***	(2.00 to 4.70)
60s							2.45***	(1.58 to 3.79)
70s							2.29***	(1.46 to 3.58)
80s or more							2.33**	(1.37 to 3.97)
Marital status (Ref=single)
Married							1.12	(0.91 to 1.39)
Widowed/  divorced/separated							1.13	(0.83 to 1.52)
Others							1.08	(0.50 to 2.34)
Education (Ref=no formal education)
Elementary school							1.05	(0.80 to 1.38)
Middle school							0.92	(0.68 to 1.25)
High school							0.97	(0.72 to 1.31)
College or graduate school							0.90	(0.66 to 1.24)
Household income (Ref=less than 1 million wons)
1 to 1.9 million wons							1.00	(0.82 to 1.22)
2 to 2.9 million wons							0.95	(0.77 to 1.17)
3 to 3.9 million wons							1.02	(0.81 to 1.28)
4 to 4.9 million wons							1.05	(0.82 to 1.35)
5 million wons or more							1.19	(0.92 to 1.54)
Observations	3861		3861		3861		3861

Note, significant at *0.01, **0.01, ***0.001.