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Table 8 Associations between exposure and cognitive functioning (beta coefficients)

From: Neurobehavioural and cognitive effects of prenatal exposure to organochlorine compounds in three year old children

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
  1. RTOS, SON-RS IQ, SON-PS IQ, SON-TIQ: see overview tests in Table 1
  2. PCBs, Calux-TEQ, DDE, HCB: see blood sampling and measurements
  3. Sum PCB*HCB, sum PCB*DDE: see statistical analysis
  4. * = 0.050 ≤ p < 0.10, ** = 0.010 ≤ p < 0.050, *** = 0.001 ≤ p < 0.010