Table 2.

Factors influencing high-risk drinking (n = 23587)

	Males (n = 10796)			Females (n = 12791)
	OR	95% CI	p-value	OR	95% CI	p-value
Age (years)
< 30	1.000			1.000
30-39	1.034	0.893-1.197	0.6566	0.513	0.416-0.634	< 0.0001
40-49	0.978	0.834-1.145	0.7795	0.405	0.322-0.509	< 0.0001
50-59	0.705	0.594-0.838	< 0.0001	0.195	0.146-0.260	< 0.0001
≥ 60	0.412	0.344-0.493	< 0.0001	0.060	0.043-0.085	< 0.0001
Marital status
Non-married	1.000			1.000
Married	0.872	0.773-0.984	0.0266	0.461	0.386-0.550	< 0.0001
Education
Lower than college	1.000			1.000
College or higher	0.949	0.855-1.052	0.3192	0.667	0.555-0.801	< 0.0001
Occupation
Unemployed	1.000			1.000
Non-manual	1.049	0.907-1.213	0.5206	1.030	0.839-1.265	0.7749
Manual	1.176	1.043-1.326	0.0083	1.380	1.167-1.632	0.0002
Household income
Lowest quartile	1.000			1.000
2nd lowest quartile	1.005	0.888-1.137	0.9379	1.137	0.920-1.406	0.2336
2nd highest quartile	1.136	1.001-1.289	0.0479	1.165	0.941-1.442	0.1605
Highest quartile	1.143	1.002-1.304	0.0464	1.138	0.910-1.423	0.2557
Body mass index
< 20	1.000			1.000
20-24	0.911	0.830-0.999	0.0488	0.769	0.655-0.903	0.0014
25-29	1.238	1.109-1.383	0.0002	1.062	0.860-1.311	0.5779
≥ 30	1.495	1.113-2.007	0.0075	1.698	1.156-2.495	0.0070
Stress
Very low	1.000			1.000
Low	1.024	0.905-1.159	0.7064	1.023	0.806-1.298	0.8545
High	1.230	1.078-1.404	0.0021	1.385	1.082-1.772	0.0097
Very high	1.408	1.167-1.700	0.0004	1.782	1.285-2.471	0.0005
Survey year
1998	1.000			1.000
2001	1.046	0.947-1.155	0.3720	2.686	2.162-3.337	< 0.0001
2005	1.488	1.349-1.642	< 0.0001	5.781	4.711-7.095	< 0.0001
Log likelihood		-6896			-2910
C-statistic		0.623			0.792

Notes: OR denotes odds ratio; CI denotes confidence interval; household income is standardized by household size; a non-married marital status includes never-married, separated, widowed and divorced participants; unemployed status includes students and housewives; and the p-value is based on the Chi-square test.