Table 3.

Drinking patterns for siblings, survivors and national controls including numbers and percents, and adjusted odds ratios

Drinking Measure	Siblings N=3,034	Survivors N=10,398	National N=5,712		Sibling vs. Survivor Chi square, p value	Sibling vs. National chi square, p value
	%	%	%wtedc to sibling sample	Actual %
Usual # drinks/day a b					X2=137.43,	X2=251.24,
0	15.7	25.7	30.1	34.5	p<001	p<.001
1	25.1	22.7	25.6	27.1
2	26.2	20.9	20.0	19.9
3	12.5	12.6	9.8	7.7
4	7.4	7.5	4.4	3.6
5	4.3	3.5	2.6	2.0
6+	8.7	7.0	7.4	5.1
Drinking frequency a b					X2=72.11,	X2=187.86,
Less than monthly	31.4	39.6	46.4	50.5	p<.001	p<.001
1-3 x/mo	25.2	23.4	21.9	20.2
1-2 x/wk	23.7	21.3	17.1	15.0
3-4 x/wk	11.5	9.5	8.1	7.6
Daily	8.3	6.2	6.8	6.6
Age of first drink a b					X2=18.30,	X2=42.17,
≤Age 14	13.2	10.8	17.0	13.7	p<001	p<.001
Age 15-16	27.9	26.6	23.8	20.8
Age 17-20	47.0	48.9	44.1	45.8
Age 21+	11.9	13.7	15.1	19.7
Composite Drinking Measures					Sibling vs. Survivor ORadj (95% CI)	Sibling vs. National ORadj (95% CI)
Current Drinker
No	17.2	26.7	29.6	26.7	Ref	Ref
Yes	82.8	73.3	70.4	73.3	1.7 (1.5-1.9)***	2.0 (1.7-2.3)***
Risky Drinking, NIAAA
No	79.7	83.8	83.8	83.8	Ref	Ref
Yes	20.3	16.2	16.2	16.2	1.5 (1.3-1.6)***	1.3 (1.1-1.6)***
Heavy drinking, 5+/6+
No	89.6	91.7	91.5	91.7	Ref	Ref
Yes	10.4	8.3	8.5	8.3	1.5 (1.3-1.8)***	1.3 (1.0-1.6)*

^aDifferences are significant for each value of drinking comparing siblings to survivors.

^bDifferences are significant for each value of drinking comparing siblings to NAS controls.

^cPercents have been weighted to match the sibling sample by age, gender and race/ethnicity. Some numbers do not equal total for each sample due to missing data.

^*p ≤ .05

^**p < .01

^***p < .001

Odds ratios are adjusted for age, ethnicity and sex.