Table 8.

Associations between exposure and cognitive functioning (beta coefficients)

Cognitive tests
	N	RTOS (language development) T = 97 ♀ = 50 ♂ = 47	SON-RS IQ (Reasoning) T = 125 ♀ = 62 ♂ = 63	SON-PS IQ (performance) T = 125 ♀ = 62 ♂ = 63	SON-TIQ (total intelligence) T = 125 ♀ = 62 ♂ = 63
Sum PCB ng/g lipid	99	−.103**	−.036	−.054	−.043
Girls		NS	NS	NS	NS
Boys		NS	NS	NS	NS
Calux-TEQ pg/g lipid	60	−.267**	−.002	−.042	−.010
Girls		NS	NS	NS	NS
Boys		NS	NS	NS	NS
PCB-118 ng/g lipid	99	−.125*	NS	NS	NS
Girls		NS	NS	NS	NS
Boys		NS	−.353**	−.401***	−.424***
PCB-170 ng/g lipid	98	−.243**	−.050	−.107	−.083
Girls		NS	NS	NS	NS
Boys		NS	NS	NS	NS
HCB ng/g lipid	98	−.262**	−.212	−.055	−.147
Girls		NS	NS	NS	NS
Boys		NS	NS	NS	NS
DDE ng/g lipid	79	−.028	.052	−.009	.026
Girls		NS	NS	NS	NS
Boys		NS	NS	NS	NS
Sum PCB*HCB	97	−.327***	−.168	−.072	−.121
Girls		NS	NS	NS	NS
Boys		NS	NS	NS	NS
Sum PCB*DDE	79	−.245**	−.048	.045	−.010
Girls		NS	NS	NS	NS
Boys		NS	NS	NS	NS

RTOS, SON-RS IQ, SON-PS IQ, SON-TIQ: see overview tests in Table 1

PCBs, Calux-TEQ, DDE, HCB: see blood sampling and measurements

Sum PCB*HCB, sum PCB*DDE: see statistical analysis

* = 0.050 ≤ p < 0.10, ** = 0.010 ≤ p < 0.050, *** = 0.001 ≤ p < 0.010