Does the social context of early alcohol use affect risky drinking in adolescents? Prospective cohort study

BMC Public Health

Table 2 Estimates of incident risky drinking in late adolescence by wave and sex

Incident risky drinking	Male				Female					Total
	Total^a	Number^b	Percentage	(95 % CI)	Total^a	Number^b	Percentage	(95 % CI)	Total^a	Number^b	Percentage	(95 % CI)
Wave 3 (mean age 15.9 years)	757	77	10	(8–13)	889	56	6	(5–8)	1647	134	8	(7–10)
Wave 4 (mean age 16.3 years)	680	90	13	(10–16)	833	75	9	(7–11)	1513	165	11	(9–13)
Wave 5 (mean age 16.8 years)	591	76	13	(10–16)	758	53	7	(5–9)	1348	129	10	(8–11)
Wave 6 (mean age 17.4 years)	515	71	14	(10–17)	705	58	8	(6–11)	1220	130	11	(9–13)

^aTotal number of adolescents seen at each wave with no previous occurrence of risky drinking
^bNumber of adolescents with incident risky drinking at wave

ISSN: 1471-2458