Changes in Alcohol Behaviour among Adolescents in North-West Russia between 1995 and 2004

Table 1

First experience of alcohol consumption (only for alcohol consumers).

First experience of alcohol consumption	Boys				Girls
	1995		2004		1995		2004
	N	%	N	%	N	%	N	%
6th grade or earlier	30	23	53	36	29	20	18	12
7th grade	23	18	33	22	33	23	41	28
8th grade	37	28	41	27	39	27	60	41
9th grade	40	31	22	15	43	30	29	19
Total	130	100	149	100	144	100	148	100
Chi-square	𝜒^2=12.4   𝑃=0.006				𝜒^2=10.6   𝑃=0.014

Gender differences in first experience of alcohol consumption: 1995 (𝜒²=1.25, 𝑃-value=𝑛𝑠); 2004 (𝜒²=22.65;𝑃-value<0.001).