Table 1 Associations between dentine lead levels (ages 6–9) and (a) convictions for violent/property offences and (b) self-reported violent/property offending, ages 14–21

Outcome	Lead levels (μg/g)					Regression parameters*
Outcome	0–2	3–5	6–8	9–11	12+	B	SE	p Value
Mean (SD) number of violent/property convictions, ages 14–21	0.00 (0.00)	0.33 (2.31)	0.23 (1.34)	0.28 (1.57)	1.89 (6.86)	0.52	0.22	0.02
N	86	409	231	83	44
Mean (SD) number of self-reported/violent/property offences, ages 14–21	1.97 (6.34)	6.97 (17.17)	6.96 (25.28)	13.25 (33.42)	15.24 (42.94)	0.38	0.10	<0.001
N	88	416	239	84	44

*Negative binomial regression.