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Table 6 Associations between exposure and behaviour assessed through IBQ (beta coefficients)

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

IBQ 12 months
  N scale 1
(stress)
scale 2
(smiling and laughter)
scale 3
(distress to limitations)
scale 4
(activity)
scale 5
(duration of orienting)
Sum PCB ng/g lipid T = 96 −.081 −.164 .014 .047 −0.125
Girls ♀ = 44 NS NS NS NS NS
Boys ♂ = 52 NS NS NS NS NS
Calux-TEQ pg/g lipid T = 68 −.247* .117 .048 .119 .085
Girls ♀ = 37 NS NS NS NS 0.468**
Boys ♂ = 31 NS NS NS NS NS
PCB-118 ng/g lipid T = 95 −.092 .007 −.201* −.131 −.061
Girls ♀ = 51 NS NS NS NS NS
Boys ♂ = 44 NS NS --0.379* NS NS
PCB-170 ng/g lipid T = 95 .007 .187 −.103 −.054 −.083
Girls ♀ = 51 NS NS NS NS NS
Boys ♂ = 44 NS NS NS NS NS
HCB ng/g lipid T = 93 −.150 .193* −.022 .045 .182
Girls ♀ = 50 NS NS NS NS 0.343*
Boys ♂ = 43 NS 0.386* NS NS NS
DDE ng/g lipid T = 100 −.201* .071 −.147 .103 −.158
Girls ♀ = 54 −0.299* NS NS NS −0.308*
Boys ♂ = 46 NS 0.347* NS NS NS
Sum PCB*HCB T = 93 −.079 −.046 −.048 −.034 .031
Girls ♀ = 50 NS NS NS NS NS
Boys ♂ = 43 NS NS NS NS NS
Sum PCB*DDE T = 96 .026 .078 .054 .159 .078
Girls ♀ = 52 NS NS NS NS NS
Boys ♂ = 44 NS 0.376* NS NS NS
  1. IBQ and IBQ scales: see overview tests in Table 1
  2. PCBs, Calux-TEQ, DDE, HCB: see blood sampling and measurements
  3. Su PCB*HCB, sum PCB*DDE: see statistical analysis
  4. * = 0.050 ≤ p < 0.10, ** = 0.010 ≤ p < 0.050, *** = 0.001 ≤ p < 0.010