Table 2.

Frequency and Quantity of drinking

Mean age (SD)	Wave-1 12.16 (.96)	Wave-2 12.62 (.95)	Wave-3 13.15 (.94)	Wave-4 13.63 (.94)	Wave-5 14.16 (.96)	Wave-6 15.14 (.95)
	Frequency
No drinking	100%	98%	97%	96%	94%	84%
1–2 times	0%	1%	1%	3%	4%	7%
3–5 times	0%	0.5%	1%	0%	1%	5%
1 per month	0%	0.5%	0.5%	1%	0.5%	2%
> 1 per month	0%	0%	0.5%	0%	0.5%	2%
	Quantity
No drinking	100%	98%	97%	96%	94%	84%
< 1 drink	0%	1%	1%	1%	2%	2%
1 drink	0%	1%	1%	2%	2%	4%
2 drinks	0%	0%	1%	0%	1%	4%
3 drinks	0%	0%	0%	1%	1%	3%
4 drinks	0%	0%	0%	0%	0%	2%
5 drinks	0%	0%	0%	0%	0%	1%
6 drinks	0%	0%	0%	0%	0%	0%

Note: Waves 1–5 = past 6 months, wave-6 = past year