Table 5.

Mean relative risks (RRs) of coronary heart disease mortality due to alcohol consumption in higher quality studiess

		Unadjusted			Partially adjustedb			Fully adjustedc
Drinking categories in higher quality studies	N/na	RR	[95% CI]	t test p	RR	[95% CI]	t test p	RR	[95% CI]	t test p
Abstainer		1.00			1.00			1.00
Current and former drinker vs. abstainer	5/42	1.04	[0.81, 1.35]	.6650	1.03	[0.81, 1.29]	.7639	1.03	[0.80, 1.33]	.7343
Former drinker vs. abstainer	4/8	1.37	[0.96, 1.95]	.0790	1.39	[1.13, 1.72]	.0031	1.40	[1.06, 1.84]	.0186
All current drinker vs. abstainer	5/34	0.97	[0.74, 1.28]	.7849	0.95	[0.79, 1.15]	.4644	0.96	[0.76, 1.21]	.6064
Occasional (<1.30 g/day)	2/4	1.19	[0.72, 1.96]	.4822	1.15	[0.81, 1.63]	.4367	1.22	[0.81, 1.82]	.3264
Low volume (1.30–24.99 g/day)	4/13	0.81	[0.62, 1.07]	.1413	0.89	[0.75, 1.04]	.1387	0.86	[0.68, 1.09]	.2106
Medium volume (25–44.99 g/day)	5/8	0.83	[0.58, 1.19]	.3013	0.84	[0.67, 1.06]	.1324	0.83	[0.62, 1.12]	.2226
High volume (≥45 g/day)	5/9	1.12	[0.80, 1.56]	.5013	0.96	[0.76, 1.23]	.7570	0.96	[0.69, 1.35]	.8272

Notes: Estimates significant at the 5% level (p < .05) are bold. CI = confidence interval.

^aN = Number of higher quality studies (adequate alcohol measure, <60 mean age at baseline, control for smoking, no former drinker bias); n = number of risk estimates.

^bWeighted estimates adjusted for between-study variation.

^cFully adjusted estimates: weighted estimates adjusted for between-study variation, occasional drinker bias, sex of study population, control for heart condition, and social status.