Table 3.

Sex-specific associations between perinatal Mn exposure and opened-eye body sway^a

	Boys			Girls			p for interaction b
	β	s.e.	p-value	β	s.e.	p-value
Prenatal Mn
Mean sway	−0.80	0.54	0.14	1.06	0.46	0.02	0.01
Transversal sway	−0.48	0.31	0.13	0.70	0.26	0.01	0.003
Sagittal sway	−0.54	0.46	0.25	0.71	0.41	0.09	0.05
Sway area c	−0.49	0.19	0.01	0.17	0.15	0.27	0.01
Sway velocity	−1.39	0.80	0.09	−0.24	0.63	0.71	0.23
Sway intensity	−0.60	0.40	0.14	0.40	0.29	0.17	0.04
Early postnatal Mn
Mean sway	−0.65	0.46	0.17	−0.09	0.41	0.83	0.45
Transversal sway	−0.30	0.27	0.28	−0.04	0.25	0.88	0.55
Sagittal sway	−0.53	0.40	0.19	−0.03	0.36	0.94	0.44
Sway area c	−0.16	0.17	0.35	−0.10	0.14	0.50	0.81
Sway velocity	−0.75	0.68	0.27	−0.28	0.62	0.66	0.56
Sway intensity	−0.30	0.34	0.38	−0.10	0.28	0.72	0.73
Childhood cumulative Mn
Mean sway	−0.64	0.45	0.16	0.25	0.32	0.44	0.12
Transversal sway	−0.26	0.26	0.32	−0.15	0.20	0.43	0.86
Sagittal sway	−0.53	0.39	0.17	0.45	0.28	0.11	0.04
Sway area c	−0.11	0.15	0.46	0.02	0.11	0.83	0.53
Sway velocity	−0.19	0.64	0.77	0.35	0.44	0.43	0.58
Sway intensity	−0.32	0.33	0.34	−0.01	0.20	0.97	0.52

^aAll tooth Mn levels were ln-transformed. Multivariable linear regressions adjusted for children's age, SES index, tooth attrition; children's sex was also adjusted in the interaction models.

^bp-value for ln-Mn × sex interaction term in the interaction models.

^cSway area was ln-transformed to reduce heteroskedasticity