Table 3.

Likelihood ratios positive and negative for three self-reported heavy alcohol use levels

Target condition and test	Likelihood ratio+ (95% CI)	Likelihood ratio− (95% CI)
Any heavy drinking
%dCDT	9.42 (4.48, 19.84)	0.62 (0.55, 0.70)
GGT	1.44 (0.90, 2.31)	0.93 (0.85, 1.02)
%dCDT+ or GGT+	2.97 (2.08, 4.25)	0.58 (0.49, 0.68)
Breath alcohol	5.77 (2.51, 13.28)	0.83 (77.0, 89.4)
Recurrent heavy drinking
%dCDT	5.39 (3.53, 8.23)	0.53 (0.43, 0.64)
GGT	1.20 (0.75, 1.91)	0.96 (0.87, 1.07)
%dCDT+ or GGT+	2.42 (1.86, 3.16)	0.53 (0.42, 0.67)
Breath alcohol	4.68 (2.60, 8.45)	0.78 (0.70, 0.87)
Persistent heavy drinking
%dCDT	4.18 (3.03, 5.75)	0.40 (0.28, 0.58)
GGT	1.97 (1.22, 3.20)	0.83 (0.70, 0.99)
%dCDT+ or GGT+	2.56 (2.03, 3.23)	0.36 (0.23, 0.56)
Breath alcohol	3.55 (2.11, 5.97)	0.76 (0.64, 0.90)

Any heavy drinking was defined as ≥4 drinks per occasion or >7 drinks per week for women, ≥5 drinks per occasion or >14 per week for men; Recurrent heavy drinking was defined as ≥5 drinks per day on at least 5 days over the past 30 days; Persistent heavy drinking was defined as ≥5 drinks per day on at least 7 consecutive days over the past 30 days.

CI, confidence interval.