Table 2.

Descriptive statistics for alcohol use variables.

Variable	Cohort 1 (n = 228)				Cohort 2 (n = 296)
	Female (n = 110)		Male (n = 118)		Female (n = 162)		Male (n = 134)
	n	%	n	%	n	%	n	%
Frequency: baseline
Never	19	17.27%	31	26.27%	21	12.96%	16	11.94%
Monthly or less	17	15.45%	17	14.41%	44	27.16%	27	20.15%
2–4 times per month	39	35.45%	38	32.30%	53	32.72%	39	29.10%
2–3 times per week	34	30.10%	30	25.42%	38	23.46%	46	34.33%
4+ times per week	1	0.9%	2	1.72%	6	3.70%	6	4.48%
Frequency: follow-up
Never	13	11.81%	14	11.86%	11	6.79%	10	7.46%
Monthly or less	16	14.55%	29	24.58%	29	17.9%	24	17.91%
2–4 times per month	48	43.63%	40	33.90%	85	52.47%	38	28.36%
2–3 times per week	32	29.09%	33	27.97%	35	21.60%	57	42.54%
4+ times per week	1	0.09%	2	1.69%	2	1.23%	5	3.73%
Quantity: baseline
1–2 units	16	14.54%	14	11.86%	45	27.8%	19	14.17%
3–4 units	31	28.18%	9	7.63%	41	25.3%	13	9.7%
5–6 units	32	29.09%	24	20.34%	37	22.8%	30	22.39%
7–9 units	7	6.36%	28	23.73%	16	9.9%	42	31.34%
10+ units	5	4.55%	12	10.17%	2	1.23%	14	10.45%
Quantity: follow-up
1–2 units	10	9.09%	18	15.25%	32	19.75%	16	11.94%
3–4 units	44	40.00%	19	16.10%	70	43.21%	28	20.90%
5–6 units	31	28.18%	28	23.73%	39	24.07%	37	27.61%
7–9 units	10	9.09%	25	21.19%	10	6.17%	32	23.88%
10+ units	2	1.81%	14	11.86%	0	0.00%	11	8.21%

Note. The sum of percentages may not equal 100.00 due to rounding.