Inaccuracies in survey reporting of alcohol consumption

BMC Public Health

Table 4 Multivariable Firth logistic regression analysis predicting adjustment of typical drink quantity based on survey format

Variable	Australia				US
	OR	95% CI	P-value	Overall p-value	OR	95% CI	P-value	Overall p-value
Age	0.98	0.86–1.13	0.88		1.05	0.95–1.15	0.33	0.33
Gender (Ref: Male)	1				1
Female	0.90	0.22–3.70	0.82		0.77	0.39–1.53	0.46	0.46
Number of drinks on a typical day (Ref: 1 or 2)	1			0.46	1			< 0.01
3 or 4	0.17	0.01–3.77	0.26		3.11	0.16–60.94	0.46
5 or 6	0.18	0.01–5.18	0.32		13.51	0.71–256.61	0.08
7 to 9	0.10	0–3.23	0.19		5.98	0.30–118.38	0.24
10+	0.91	0.01–72.63	0.72		8.03	0.32–202.61	0.21
Frequency of drinking in the past 3 months (Ref: Monthly or less)	1			0.71	1			< 0.01
2 to 4 times a month	2.20	0.27–17.97	0.46		4.08	1.81–9.20	< 0.01
2 or 3 times a week	0.86	0.06–12.48	0.91		1.54	0.56–4.24	0.40
4+ times a week	0.52	0.01–18.01	0.72		3.06	0.71–13.14	0.13
Frequency of drinking 6+ drinks on one occasion (Ref; Less than monthly)	1			0.29	1			0.28
Monthly	0.29	0.04–2.27	0.24		0.91	0.40–2.07	0.83
Weekly	1.27	0.07–24.54	0.87		2.27	0.69–7.44	0.18
Daily or almost daily	0.25	0–30.14	0.57		0.71	0.02–28.70	0.86
In the past 12 months planned to get drunk before drinking (Ref: Never)					1			0.02
Once					0.10	0.01–0.57	0.01
Twice					0.54	0.13–2.31	0.41
3–5 times					0.19	0.06–0.62	0.01
5–11 times					0.14	0.04–0.49	< 0.01
12+ times					0.21	0.06–0.71	0.01

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