Adolescent precursors of cannabis dependence: findings from the Victorian Adolescent Health Cohort Study. . The full reference to Patton et al (2002) should read: Patton, G. C., Coffey, C., Carlin, J. B., et al (2002) Cannabis use and mental health in young people: cohort study. BMJ, 325, 1195–1198.

Non-right-handedness and schizophrenia (letter). . The first sentence of the last paragraph should read: In schizophrenia, I have suggested that the gene may lose its directional coding and become ‘agnosic’ for right or left.

Long-term outcome of long-stay psychiatric in-patients considered unsuitable to live in the community. TAPS Project 44. . Table 1 (p. 430) should read:

Table 1 Changes in patients’ measures at 1-year and 5-year follow-ups (n=61)¹

Variable	Baseline2	1 year2	5 years2	Baseline minus 1-year score3	95% CI	Baseline minus 5-year score3	95% CI	P
Present State Examination
Total score	17.84	14.61	17.16	-2.57	-7.48 to 2.33	0.58	-3.34 to 4.51	NS
Negative symptoms	1.11	1.49	1.82	0.28	-0.12 to 0.68	0.65	0.24 to 1.07	<0.003
Delusions and hallucinations	4.26	4.41	4.64	0.24	-1.90 to 2.40	0.70	-0.91 to 2.31	NS
Social Behaviour Schedule
Total score	6.07	5.97	5.07	-0.06	-0.75 to 0.63	-1.00	-1.91 to -0.09	<0.033
Basic Everyday Living Skills
Domestic	10.36	11.14	13.55	0.78	-0.76 to 2.32	3.19	1.24 to 5.14	<0.002
Social	6.79	7.46	7.92	0.82	-0.01 to 1.73	1.54	0.29 to 2.79	<0.017
Self-care	20.49	20.53	23.84	0	-0.90 to 1.90	3.83	1.58 to 6.08	<0.002
Community	5.89	5.97	7.02	0.23	-0.59 to 1.05	1.29	0.30 to 2.29	<0.012
Social Network Schedule
Total names	10.33	7.72	7.21	-3.67	-8.32 to 0.99	-2.62	-6.34 to 1.11	NS